Format Penilaian Refrigeration LKS 2017
Skill name
Refrigeration and Air Conditioning
Criteria
Mark
A
Component Fabrication
12.00
12.000
B
Component & System Installation
20.00
20.000
C
Electrical Installation
12.00
12.000
D
Commissioning & Adjustment
24.00
24.000
E
Mechanical Fault Finding & Repair
10.00
10.000
F
Refrigerant Recovery & Emission control
13.00
13.000
G
Work practices and Safety
9.00
9.000
100.00
Total
Sub
Criteria
ID
A1
WSSS
Section
Sub - Criteria
Name or Description
Module A: Copper Fabrication
Aspect
No
Aspect
Type
O = Obj
S = Sub
1
O
3
4
O
O
O
Aspect - Description
Fabricated headers has inlet and outlets pipes arrangesd as per specifications at 90 degress to headers
0
1st side
Fabricated headders are squared and lies flat on the tables
A1
Fabricated headders arranges as per specifications at 90 degrees to 1/2" soft drawn copper tubes
Overall width D1 is as per specifications
1st Side
2nd Side
5
O
Overall width D2 is as per specifications
1st Side
2nd Side
6
O
100.000
For Objective Assessment Only
2nd side
2
Mark
Overall width D3 is as per specifications
1st Side
2nd Side
Add - (Extra Aspect Information)
Max
Mark
0 - 1 degree
0.40
1 - 3 degree
0.20
>3 degree
0.00
0 - 1 degree
0.40
1 - 3 degree
0.20
>3 degree
0.00
0 - 1 mm
0.80
1 - 3 mm
0.40
>3 mm r
0.00
0 - 1 degree
0.80
1 - 3 degree
0.40
>3 degree
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
7
O
Overall width D4 is as per specifications
1st Side
2nd Side
8
O
Overall width D5 is as per specifications
1st Side
2nd Side
3rd Side
4st Side
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.20
1 - 3 mm refer drawing
0.10
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.20
1 - 3 mm refer drawing
0.10
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.20
1 - 3 mm refer drawing
0.10
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.20
1 - 3 mm refer drawing
0.10
>3 mm refer drawing
0.00
Pressure tested to 10 bars +/-
1.50
9
O
Fabricated copper tube is leak tight on first attemp
10
O
Brazed joint B1 is made to acceptable standard
Yes/No
2% solder used
0.40
11
O
Brazed joint B2 is made to acceptable standard
Yes/No
2% solder used
0.40
12
O
Brazed joint B3 is made to acceptable standard
Yes/No
2% solder used
0.40
13
O
Brazed joint B4 is made to acceptable standard
Yes/No
2% solder used
0.40
14
O
Brazed joint B5 is made to acceptable standard
Yes/No
2% solder used
0.40
15
O
Nitrogen was used while brazing a pipework
16
O
The competitor prevented moisture contamination inside the pipe during the assembly process.
Yes
17
O
The bare coil is fabricated according to the drawing and specification.
Yes
18
O
No extra material used due to mistake during the process
Yes
0.50
LIVE MARKING
0.50
0.70
LIVE MARKING
0.40
12.00
Sub
Criteria
ID
B1
B2
B3
B4
B6
WSSSS
section
Sub - Criteria
Name or Description
Module B - Major Components
Module B - Refrigerant Controls
Module B - Low Presure Vapor Lines
Module B - High Pressure Liquid Line
Module B - High Pressure Discharge Line
For Objective Assessment Only
Aspect
Type
Aspect no
O = Obj
S = Sub
Aspect - Description
Requirement
or Nominal
Size
Add - (Extra Aspect Information)
Max
Mark
19
O
Electrical switchboard installed in specified location and securely fixed to wall
0.4
20
O
Condensing unit installed in specified location and securely fixed to cradle
0.4
21
O
Tube in tube heat exchanger installed in specified location and securely fixed to wall
0.4
22
O
Glycol tank is installed as speciffied
0.4
23
O
Fabricated copper coil installed in ice ring as specified
0.2
24
O
All pipework is installed within boundaries of supplied cradle
0.4
25
O
TXV installed in correct location in system, with correct flow and as per manufacturer instruction.
0.50
26
O
Sigh glass & filter dryer installed in correct location in system with correct flow direction
Yes
0.50
27
O
Dual pressure control pipes installed as per specification
Yes
0.50
28
O
Pressure control is leveled and securely mounted to wall
Yes
0.30
29
O
All pipe installed in vertical and horizontal planes and the pipe work is vertically and horizontally straight.
Yes
0.30
30
O
All bends of appropriate radius with no kinks
Yes
0.10
31
O
Suction line is securely fastened using appropriate method
Yes
0.30
32
O
Installed pipe work does not rub on any components when operating (fan blades, penetration, etc)
Yes
0.20
33
O
Nitrogen was used while brazing a pipework
34
O
Brazed joint 1 is made to acceptable standard
0.40
35
O
Suction, low pressure liquid and low pressure lines are set out so that these pipes don't cross each other.
0.20
36
O
All Suction line is neatly insulated the entire length of the installation
37
0
Single gauge installed as specified and standard
38
O
All pipe installed in vertical and horizontal planes and the pipe work is vertically and horizontally straight.
39
O
All bends of appropriate radius with no kinks
0.10
40
O
Liquid line is securely fastened using appropriate method
0.30
41
O
Installed pipe work does not rub on any components when operating (fan blades, penetration, etc)
42
O
Nitrogen was used while brazing a pipework
43
O
Brazed joint 2 is made to acceptable standard
0.40
44
0
Single gauge installed as specified and standard
0.20
45
O
All pipe installed in vertical and horizontal planes and the pipe work is vertically and horizontally straight.
46
O
All bends of appropriate radius with no kinks
0.10
47
O
High Pressure line is securely fastened using appropriate method
0.30
48
O
Installed pipe work does not rub on any components when operating (fan blades, penetration, etc)
49
O
Nitrogen was used while brazing a pipework
50
O
Brazed joint 3 is made to acceptable standard
51
O
Ball valve installed as specified and standard
LIVE MARKING
Yes
0.20
0.20
0.20
Yes
0.30
Yes
0.20
LIVE MARKING
Yes
0.20
0.30
Yes
0.20
LIVE MARKING
0.20
0.40
Yes
Yes
0.20
B6
Module B - Tube in Tube Heat Exchanger
B7
Module B - Pressure Test
B8
Module B - Evacuation
52
O
Heat Exchanger is piped as per diagram
0.50
53
O
Brazed joint 4 on refrigerant side of heat exchanger is acceptable
0.40
54
O
Glycol pipework installed as per diagram
0.40
55
O
All glycol pipework lines are insulated
0.20
56
O
Glycol pipework has no kinks on copper and plastic tubing
0.10
57
O
All pipe work does not rub on any components when operating (fan blades, penetration, etc)
0.10
58
O
All pipe installed in vertical and horizontal planes.
0.20
59
O
Glycol line is securely fastened using appropriate method
0.10
60
O
Brazed joint 5 on glycol side heat exchanger is acceptable
0.40
61
O
Starting presure of all attempts meet required standards
0.50
62
O
The appropriate valves were opened to ensure pressure testing of entire system
0.40
63
O
Gauge were correctly fitted to the system
0.20
64
O
Nitrogen was safely added to the system to the desired test pressure
0.40
65
O
System was leak tested while under pressure
0.20
66
O
No leaks were detected on FIRST pressure attempt
2.00
67
O
System held pressure for complete standing time after any leaks repaired
0.50
68
O
Nitrogen was released from system at completion of pressure test.
0.20
69
O
The service manifold gauge lines were removed with minimal refrigerant loss
70
O
Vacuum level (value) of all atempts meet required standards
71
O
The appropriate valve were opened to ensure evacuation of the entire system
Yes/No
0.20
72
O
Vacuum gauge installed so it can be isolated from vacuum pump and still measure system
Yes/No
0.20
73
O
The vacuum held when isolated from the vacuum pump for 10 minutes after FIRST attempt
74
O
The vacuum held when isolated from the vacuum pump for 10 minutes after FINAL attempt
Yes
0.30
0.50
2.00
Yes/No
0.50
20.00
Sub
Criteria
ID
C1
WSSS
section
Sub - Criteria
Name or Description
Module B - Connect the Electrical Circuit
Aspect
No
Aspect
Type
Aspect - Description
O = Obj
S = Sub
For Objective Assessment Only
Requirement
or Nominal
Size
Add - (Extra Aspect Information)
Max
Mark
75
O
All wiring installed as per supplied drawing
Yes/No
0.50
76
O
Supply voltage is wired correctly on supplied plug
Yes/No
0.50
77
O
220V supply wired to correct terminals in switchboard, and correctly terminated
Yes/No
0.50
78
O
Condensing unit wired to correct terminal in switchboard, and correctly terminated
Yes/No
0.50
79
O
Pressure control wired to correct terminal in switchboard, and correctly terminated
Yes/No
0.50
80
O
Glycol pump wired to correct terminal in switchboard, and correctly terminated
Yes/No
0.50
81
O
All cables saddled (fixed) and secured separate to piping
Yes/No
0.80
82
O
Installed cables not to be crush by piping or other components
Yes/No
0.50
83
O
Installed cables and wires installed as per test project for adequate protection
Yes/No
0.50
84
O
All cables and conduit/wire ways is installed within boudaries of the supplied cradle
Yes/No
0.60
C2
Module B - Connect the Electronic Controls
C3
Module B - Electrical Testing
85
O
Temperature probe is wired to the correct terminals in switchboard, and terminated correctly
86
O
Temperature probe is installed in conduit/cable trunking correctly
Yes/No
0.30
87
O
Conduit/cable trunking is verticaly and horizontaly leveled and securely fastened
Yes/No
0.30
88
O
Before turning the power on: the Earth circuit was correctly tested for continuity
Yes/No
0.50
89
O
Before turning the power on: the Neutral circuit was correctly tested for continuity
Yes/No
0.50
90
O
Installation tested for earth continuity to power supply
91
O
Installation tested for earth continuity to condensing unit proir to energising
Yes/No
0.50
92
O
Installation tested for earth leakage proir energising
Yes/No
0.50
93
O
Installation tested for short between active and neutral prior energising
Yes/No
0.50
94
O
No wiring fault found on circuit testing
Yes/No
0.50
95
O
Circuit energised safely the first time without blowing fuses/circuit breaker/etc
Yes/No
1.00
96
O
circuit operated safely and correctly the first time without wiring modifications
Yes/No
0.50
97
O
Circuit operated safely and correctly after any necessary modifications
Yes/No
0.50
0.50
0.50
12.00
Sub
Criteria
ID
D1
D2
D3
WSSS
section
Sub - Criteria
Name or Description
Module B - Charge with Refrigerant Primary Circuit
Module B - Charge with Refrigerant Secondary Circuit
Module B - Commissioning report
Aspect
No
Aspect
Type
Aspect - Description
O = Obj
S = Sub
For Objective Assessment Only
Requirement
or Nominal Add - (Extra Aspect Information)
Size
Max
Mark
98
O
The correct valves were opened prior to operation
99
O
Liquid refrigeration was added to the liquid line only (not suction)
100
O
The correct refrigerant charge weighed into the system and recorded, using an acceptable method
101
O
Amount of refrigerant added is within acceptable guidelines
Yes
0.80
102
O
Electronic leak check was made during charging of refrigerant
Yes
1.00
103
O
The gauge were removed from the system with no avoidable loss of refrigerant
0.80
104
O
Water added to the system was measured to ensure 60% water by volume and a 40% glycol by volume
1.00
105
O
Glycol pump circulated prior to any refrigeration being energised
0.50
106
O
Commissioning report - Ambient temperature is recorded correctly
0.40
107
O
Commissioning report - Refrigerant type is recorded correctly
Yes
0.40
108
O
Commissioning report - Mass of refrigerant is recorded correctly
Yes
0.40
109
O
Commissioning report - Suction pressure is recorded correctly
Yes
0.40
110
O
Commissioning report - Discharge pressure is recorded correctly
Yes
0.40
111
O
Commissioning report - Condenser subcooling measured and recorded correctly
Yes
0.40
112
O
Commissioning report - Total system superheat measured and recorded correctly
Yes
0.40
113
O
Commissioning report - LP control cut in set and cut out are set and recorded correctly
Yes
0.60
114
O
Commissioning report - HP cut out is set and recorded correctly
Yes
0.60
115
O
Commissioning report - Capacity regulator is set and recorded correctly
Yes
0.50
116
O
Commissioning report - Glycol supply and return temperature to and from ice rink recorded correctly
0.40
117
O
Commissioning report - Glycol pump operating current measured and recorded correctly
0.40
118
O
Commissioning report - Condensing unit operating current measured and recorded correctly
0.40
no leakage
1.00
1.00
Yes
0.40
D4
Module B - Commissioning; Complete Installation
D5
Module C - Commissioning Report
119
O
Project completed requiring no additional materilas
120
O
Covers installed securely on all equipment
Yes
0.30
121
O
Correct refrigerant type was recorded
Yes
0.30
122
O
No burn marks and no damage on any equipment from installation
0.70
123
O
System left operation at completion of module
0.50
124
O
After minimum 12hrs run time there is NO water present above the fabricated copper tubing submerged in the
ice ring
1.00
125
O
The control was correctly programmed as per test project specifications
0.50
126
O
Commissioning Report - Ambient temperature measured and recorded correctly.
0.30
127
O
Commissioning Report - return air temperature dry bulb/wet bulb measured, recorded and plotted correctly
Yes/No
1.00
128
O
Commissioning Report - supply air temperature dry bulb/wet bulb measured, recorded and plotted correctly
Yes/No
1.00
129
O
Commissioning Report - Indoor fan speed and mode of operation selected and recorded correctly
Yes/No
0.30
130
O
Commissioning report - Refrigerant type is recorded correctly
Yes/No
0.40
131
O
Commissioning report - Suction pressure is recorded correctly
Yes/No
0.50
132
O
Commissioning report - Total system superheat measured and recorded correctly
Yes/No
0.50
133
O
Commissioning report - Condensing unit operating current measured and recorded correctly
Yes/No
0.50
134
O
Commissioning report - Indoor fan operating current measured and recorded correctly
Yes/No
0.50
135
O
Supply and return air conditions were joined to indicate cooling process
Yes/No
0.50
0.30
O
D6
Module C - Commissioning - Complete Installation
136
O
Project completed requiring no additional materilas
Yes/No
0.50
137
O
Covers installed securely on all equipment
Yes/No
0.50
138
O
No burn marks and no damage on any equipment from installation
Yes/No
0.70
139
O
Installation not damaged in any ways
Yes/No
0.50
140
O
System left in correct operation
Yes/No
0.50
24.00
Sub
Criteria
ID
E1
WSSS
section
Sub - Criteria
Name or Description
ModuleC - Mechanical Fault Finding
For Objective Assessment Only
Aspect
No
Aspect
Type
O = Obj
S = Sub
141
O
The unit was tested for short circuit, insulation resistance and earth continuity prior to energising
1.00
142
O
The fault was correctly identified, repaired, recorded and reclaim started in under 30 minutes
3.00
143
O
The fault was correctly identified, repaired, recorded and reclaim started in under 60 minutes
2.50
144
O
The fault was correctly identified, repaired, recorded and reclaim started in under 90 minutes
2.00
145
O
The fault was correctly identified, repaired, recorded and reclaim started in under 120 minutes
1.50
Aspect - Description
Requirement
or Nominal
Size
Add - (Extra Aspect Information)
Max
Mark
10.00
Sub
Criteria
ID
Sub - Criteria
WSSS
section
F1
Name or Description
Module C - Reclaim Refrigerant
F2
Module C - Evacuation
F3
Module C - Charge with Refrigerant
Asepct
No
Aspect
Type
Aspect - Description
O = Obj
S = Sub
For Objective Assessment Only
Requirement
or Nominal Add - (Extra Aspect Information)
Size
Max
Mark
146
O
Power supply to air conditioner was isolated before refrigerant recovery started
0.60
147
O
Service manifold gauge lines were fitted to the system in the correct way with minimal loss of refrigerant
0.50
148
O
Moisture contamination was prevented without loss of refrigerant
0.50
149
O
The correct refrigerant cylinder was selected for the recovery of refrigerant
0.40
150
O
Refrigerant cylinder weighed and recorded before recovery started
1.00
151
O
Refrigerant recovery lines set up was correct first time
1.00
152
O
The full refrigerant charge was removed from the system using recovery machine
1.00
153
O
Electronic leak check was made during recovery of refrigerant
1.00
154
O
Syetem pressure were at atmospheric pressure or below after recovery was completed
1.00
155
O
All service caps repalced on the recovery unit and recovery cylinder
0.50
156
O
The quantity of refrigernat recovered from the system was recorded
0.50
157
O
First vacuum attemp meets required standards
1.00
158
O
The vacuum held when isolated from vacuum pump for 10 minutes after any attempt
1.50
159
O
The correct refrigerant charge weighed into the system and recorded, using an accetable method
1.00
160
O
Amount of refrigerant added is within accetable guidelines
1.00
161
O
The gauges were removed from the system with the minimals loss of refrigerant.
0.50
13.00
Sub
Criteria
ID
G1
G2
G3
WSSS
section
Sub - Criteria
Name or Description
Module A - Work Practices and safety
Module B - Work Practices and safety
Module C - Work Practices and safety
Aspect
No
Aspect
Type
Aspect - Description
O = Obj
S = Sub
For Objective Assessment Only
Requirement
or Nominal Add - (Extra Aspect Information)
Size
Max
Mark
162
O
Protective gloves were worn at all times when exposed to heat sources
0.50
163
O
Protective eye wear was worn at all times while brazing
1.00
164
O
The competitors always used the correct tools and safe work practices for every actvity
0.50
165
O
The competitors brazing torches and regulators are left at atmospheric prssure on completion of modules
1.00
166
O
Protective gloves were worn at all times when exposed to heat sources and cut hazards
0.50
167
O
Protective eye wear was worn at all times while brazing, drilling, handling refrigerant, glycol and nitrogen
1.00
168
O
The competitors always used the correct tools and safe work practices for every actvity
0.50
169
O
The competitors brazing torches and regulators are left at atmospheric prssure on completion of modules
1.00
170
O
Protective gloves were worn at all times when exposed to heat sources and cut hazards
0.50
171
O
Protective eye wear was worn at all times while brazing, drilling, handling refrigerant and nitrogen
1.00
172
O
The competitors always used the correct tools and safe work practices for every actvity
0.50
173
O
The competitors brazing torches and regulators are left at atmospheric prssure on completion of modules
1.00
Skill name
Refrigeration and Air Conditioning
Criteria
Marks
Section
Criterion
Modules
Objective
Total
Section
Criterion
A
B
A
Component Fabrication
12
12
A
Component Fabrication
B
Component & System Installation
20
20
B
Component & System Installation
20
C
Electrical Installation
12
12
C
Electrical Installation
12
D
Commissioning & Adjustment
24
24
D
Commissioning & Adjustment
15
E
Mechanical Fault Finding & Repair
10
10
E
Mechanical Fault Finding & Repair
F
Electrical Fault Finding & Repair
0
0
F
Electrical Fault Finding & Repair
G
Refrigerant Recovery & Emission
control
13
13
G
Refrigerant Recovery & Emission
control
H
Work practices and Safety
9
9
H
Work practices and Safety
3
3
100
100
Total
15
55
Total
12
5
Modules
C
Total
12
20
0
12
9
24
10
10
0
8
13
3
9
30
100
Refrigeration and Air Conditioning
Criteria
Mark
A
Component Fabrication
12.00
12.000
B
Component & System Installation
20.00
20.000
C
Electrical Installation
12.00
12.000
D
Commissioning & Adjustment
24.00
24.000
E
Mechanical Fault Finding & Repair
10.00
10.000
F
Refrigerant Recovery & Emission control
13.00
13.000
G
Work practices and Safety
9.00
9.000
100.00
Total
Sub
Criteria
ID
A1
WSSS
Section
Sub - Criteria
Name or Description
Module A: Copper Fabrication
Aspect
No
Aspect
Type
O = Obj
S = Sub
1
O
3
4
O
O
O
Aspect - Description
Fabricated headers has inlet and outlets pipes arrangesd as per specifications at 90 degress to headers
0
1st side
Fabricated headders are squared and lies flat on the tables
A1
Fabricated headders arranges as per specifications at 90 degrees to 1/2" soft drawn copper tubes
Overall width D1 is as per specifications
1st Side
2nd Side
5
O
Overall width D2 is as per specifications
1st Side
2nd Side
6
O
100.000
For Objective Assessment Only
2nd side
2
Mark
Overall width D3 is as per specifications
1st Side
2nd Side
Add - (Extra Aspect Information)
Max
Mark
0 - 1 degree
0.40
1 - 3 degree
0.20
>3 degree
0.00
0 - 1 degree
0.40
1 - 3 degree
0.20
>3 degree
0.00
0 - 1 mm
0.80
1 - 3 mm
0.40
>3 mm r
0.00
0 - 1 degree
0.80
1 - 3 degree
0.40
>3 degree
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
7
O
Overall width D4 is as per specifications
1st Side
2nd Side
8
O
Overall width D5 is as per specifications
1st Side
2nd Side
3rd Side
4st Side
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.40
1 - 3 mm refer drawing
0.20
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.20
1 - 3 mm refer drawing
0.10
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.20
1 - 3 mm refer drawing
0.10
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.20
1 - 3 mm refer drawing
0.10
>3 mm refer drawing
0.00
0 - 1 mm refer drawing
0.20
1 - 3 mm refer drawing
0.10
>3 mm refer drawing
0.00
Pressure tested to 10 bars +/-
1.50
9
O
Fabricated copper tube is leak tight on first attemp
10
O
Brazed joint B1 is made to acceptable standard
Yes/No
2% solder used
0.40
11
O
Brazed joint B2 is made to acceptable standard
Yes/No
2% solder used
0.40
12
O
Brazed joint B3 is made to acceptable standard
Yes/No
2% solder used
0.40
13
O
Brazed joint B4 is made to acceptable standard
Yes/No
2% solder used
0.40
14
O
Brazed joint B5 is made to acceptable standard
Yes/No
2% solder used
0.40
15
O
Nitrogen was used while brazing a pipework
16
O
The competitor prevented moisture contamination inside the pipe during the assembly process.
Yes
17
O
The bare coil is fabricated according to the drawing and specification.
Yes
18
O
No extra material used due to mistake during the process
Yes
0.50
LIVE MARKING
0.50
0.70
LIVE MARKING
0.40
12.00
Sub
Criteria
ID
B1
B2
B3
B4
B6
WSSSS
section
Sub - Criteria
Name or Description
Module B - Major Components
Module B - Refrigerant Controls
Module B - Low Presure Vapor Lines
Module B - High Pressure Liquid Line
Module B - High Pressure Discharge Line
For Objective Assessment Only
Aspect
Type
Aspect no
O = Obj
S = Sub
Aspect - Description
Requirement
or Nominal
Size
Add - (Extra Aspect Information)
Max
Mark
19
O
Electrical switchboard installed in specified location and securely fixed to wall
0.4
20
O
Condensing unit installed in specified location and securely fixed to cradle
0.4
21
O
Tube in tube heat exchanger installed in specified location and securely fixed to wall
0.4
22
O
Glycol tank is installed as speciffied
0.4
23
O
Fabricated copper coil installed in ice ring as specified
0.2
24
O
All pipework is installed within boundaries of supplied cradle
0.4
25
O
TXV installed in correct location in system, with correct flow and as per manufacturer instruction.
0.50
26
O
Sigh glass & filter dryer installed in correct location in system with correct flow direction
Yes
0.50
27
O
Dual pressure control pipes installed as per specification
Yes
0.50
28
O
Pressure control is leveled and securely mounted to wall
Yes
0.30
29
O
All pipe installed in vertical and horizontal planes and the pipe work is vertically and horizontally straight.
Yes
0.30
30
O
All bends of appropriate radius with no kinks
Yes
0.10
31
O
Suction line is securely fastened using appropriate method
Yes
0.30
32
O
Installed pipe work does not rub on any components when operating (fan blades, penetration, etc)
Yes
0.20
33
O
Nitrogen was used while brazing a pipework
34
O
Brazed joint 1 is made to acceptable standard
0.40
35
O
Suction, low pressure liquid and low pressure lines are set out so that these pipes don't cross each other.
0.20
36
O
All Suction line is neatly insulated the entire length of the installation
37
0
Single gauge installed as specified and standard
38
O
All pipe installed in vertical and horizontal planes and the pipe work is vertically and horizontally straight.
39
O
All bends of appropriate radius with no kinks
0.10
40
O
Liquid line is securely fastened using appropriate method
0.30
41
O
Installed pipe work does not rub on any components when operating (fan blades, penetration, etc)
42
O
Nitrogen was used while brazing a pipework
43
O
Brazed joint 2 is made to acceptable standard
0.40
44
0
Single gauge installed as specified and standard
0.20
45
O
All pipe installed in vertical and horizontal planes and the pipe work is vertically and horizontally straight.
46
O
All bends of appropriate radius with no kinks
0.10
47
O
High Pressure line is securely fastened using appropriate method
0.30
48
O
Installed pipe work does not rub on any components when operating (fan blades, penetration, etc)
49
O
Nitrogen was used while brazing a pipework
50
O
Brazed joint 3 is made to acceptable standard
51
O
Ball valve installed as specified and standard
LIVE MARKING
Yes
0.20
0.20
0.20
Yes
0.30
Yes
0.20
LIVE MARKING
Yes
0.20
0.30
Yes
0.20
LIVE MARKING
0.20
0.40
Yes
Yes
0.20
B6
Module B - Tube in Tube Heat Exchanger
B7
Module B - Pressure Test
B8
Module B - Evacuation
52
O
Heat Exchanger is piped as per diagram
0.50
53
O
Brazed joint 4 on refrigerant side of heat exchanger is acceptable
0.40
54
O
Glycol pipework installed as per diagram
0.40
55
O
All glycol pipework lines are insulated
0.20
56
O
Glycol pipework has no kinks on copper and plastic tubing
0.10
57
O
All pipe work does not rub on any components when operating (fan blades, penetration, etc)
0.10
58
O
All pipe installed in vertical and horizontal planes.
0.20
59
O
Glycol line is securely fastened using appropriate method
0.10
60
O
Brazed joint 5 on glycol side heat exchanger is acceptable
0.40
61
O
Starting presure of all attempts meet required standards
0.50
62
O
The appropriate valves were opened to ensure pressure testing of entire system
0.40
63
O
Gauge were correctly fitted to the system
0.20
64
O
Nitrogen was safely added to the system to the desired test pressure
0.40
65
O
System was leak tested while under pressure
0.20
66
O
No leaks were detected on FIRST pressure attempt
2.00
67
O
System held pressure for complete standing time after any leaks repaired
0.50
68
O
Nitrogen was released from system at completion of pressure test.
0.20
69
O
The service manifold gauge lines were removed with minimal refrigerant loss
70
O
Vacuum level (value) of all atempts meet required standards
71
O
The appropriate valve were opened to ensure evacuation of the entire system
Yes/No
0.20
72
O
Vacuum gauge installed so it can be isolated from vacuum pump and still measure system
Yes/No
0.20
73
O
The vacuum held when isolated from the vacuum pump for 10 minutes after FIRST attempt
74
O
The vacuum held when isolated from the vacuum pump for 10 minutes after FINAL attempt
Yes
0.30
0.50
2.00
Yes/No
0.50
20.00
Sub
Criteria
ID
C1
WSSS
section
Sub - Criteria
Name or Description
Module B - Connect the Electrical Circuit
Aspect
No
Aspect
Type
Aspect - Description
O = Obj
S = Sub
For Objective Assessment Only
Requirement
or Nominal
Size
Add - (Extra Aspect Information)
Max
Mark
75
O
All wiring installed as per supplied drawing
Yes/No
0.50
76
O
Supply voltage is wired correctly on supplied plug
Yes/No
0.50
77
O
220V supply wired to correct terminals in switchboard, and correctly terminated
Yes/No
0.50
78
O
Condensing unit wired to correct terminal in switchboard, and correctly terminated
Yes/No
0.50
79
O
Pressure control wired to correct terminal in switchboard, and correctly terminated
Yes/No
0.50
80
O
Glycol pump wired to correct terminal in switchboard, and correctly terminated
Yes/No
0.50
81
O
All cables saddled (fixed) and secured separate to piping
Yes/No
0.80
82
O
Installed cables not to be crush by piping or other components
Yes/No
0.50
83
O
Installed cables and wires installed as per test project for adequate protection
Yes/No
0.50
84
O
All cables and conduit/wire ways is installed within boudaries of the supplied cradle
Yes/No
0.60
C2
Module B - Connect the Electronic Controls
C3
Module B - Electrical Testing
85
O
Temperature probe is wired to the correct terminals in switchboard, and terminated correctly
86
O
Temperature probe is installed in conduit/cable trunking correctly
Yes/No
0.30
87
O
Conduit/cable trunking is verticaly and horizontaly leveled and securely fastened
Yes/No
0.30
88
O
Before turning the power on: the Earth circuit was correctly tested for continuity
Yes/No
0.50
89
O
Before turning the power on: the Neutral circuit was correctly tested for continuity
Yes/No
0.50
90
O
Installation tested for earth continuity to power supply
91
O
Installation tested for earth continuity to condensing unit proir to energising
Yes/No
0.50
92
O
Installation tested for earth leakage proir energising
Yes/No
0.50
93
O
Installation tested for short between active and neutral prior energising
Yes/No
0.50
94
O
No wiring fault found on circuit testing
Yes/No
0.50
95
O
Circuit energised safely the first time without blowing fuses/circuit breaker/etc
Yes/No
1.00
96
O
circuit operated safely and correctly the first time without wiring modifications
Yes/No
0.50
97
O
Circuit operated safely and correctly after any necessary modifications
Yes/No
0.50
0.50
0.50
12.00
Sub
Criteria
ID
D1
D2
D3
WSSS
section
Sub - Criteria
Name or Description
Module B - Charge with Refrigerant Primary Circuit
Module B - Charge with Refrigerant Secondary Circuit
Module B - Commissioning report
Aspect
No
Aspect
Type
Aspect - Description
O = Obj
S = Sub
For Objective Assessment Only
Requirement
or Nominal Add - (Extra Aspect Information)
Size
Max
Mark
98
O
The correct valves were opened prior to operation
99
O
Liquid refrigeration was added to the liquid line only (not suction)
100
O
The correct refrigerant charge weighed into the system and recorded, using an acceptable method
101
O
Amount of refrigerant added is within acceptable guidelines
Yes
0.80
102
O
Electronic leak check was made during charging of refrigerant
Yes
1.00
103
O
The gauge were removed from the system with no avoidable loss of refrigerant
0.80
104
O
Water added to the system was measured to ensure 60% water by volume and a 40% glycol by volume
1.00
105
O
Glycol pump circulated prior to any refrigeration being energised
0.50
106
O
Commissioning report - Ambient temperature is recorded correctly
0.40
107
O
Commissioning report - Refrigerant type is recorded correctly
Yes
0.40
108
O
Commissioning report - Mass of refrigerant is recorded correctly
Yes
0.40
109
O
Commissioning report - Suction pressure is recorded correctly
Yes
0.40
110
O
Commissioning report - Discharge pressure is recorded correctly
Yes
0.40
111
O
Commissioning report - Condenser subcooling measured and recorded correctly
Yes
0.40
112
O
Commissioning report - Total system superheat measured and recorded correctly
Yes
0.40
113
O
Commissioning report - LP control cut in set and cut out are set and recorded correctly
Yes
0.60
114
O
Commissioning report - HP cut out is set and recorded correctly
Yes
0.60
115
O
Commissioning report - Capacity regulator is set and recorded correctly
Yes
0.50
116
O
Commissioning report - Glycol supply and return temperature to and from ice rink recorded correctly
0.40
117
O
Commissioning report - Glycol pump operating current measured and recorded correctly
0.40
118
O
Commissioning report - Condensing unit operating current measured and recorded correctly
0.40
no leakage
1.00
1.00
Yes
0.40
D4
Module B - Commissioning; Complete Installation
D5
Module C - Commissioning Report
119
O
Project completed requiring no additional materilas
120
O
Covers installed securely on all equipment
Yes
0.30
121
O
Correct refrigerant type was recorded
Yes
0.30
122
O
No burn marks and no damage on any equipment from installation
0.70
123
O
System left operation at completion of module
0.50
124
O
After minimum 12hrs run time there is NO water present above the fabricated copper tubing submerged in the
ice ring
1.00
125
O
The control was correctly programmed as per test project specifications
0.50
126
O
Commissioning Report - Ambient temperature measured and recorded correctly.
0.30
127
O
Commissioning Report - return air temperature dry bulb/wet bulb measured, recorded and plotted correctly
Yes/No
1.00
128
O
Commissioning Report - supply air temperature dry bulb/wet bulb measured, recorded and plotted correctly
Yes/No
1.00
129
O
Commissioning Report - Indoor fan speed and mode of operation selected and recorded correctly
Yes/No
0.30
130
O
Commissioning report - Refrigerant type is recorded correctly
Yes/No
0.40
131
O
Commissioning report - Suction pressure is recorded correctly
Yes/No
0.50
132
O
Commissioning report - Total system superheat measured and recorded correctly
Yes/No
0.50
133
O
Commissioning report - Condensing unit operating current measured and recorded correctly
Yes/No
0.50
134
O
Commissioning report - Indoor fan operating current measured and recorded correctly
Yes/No
0.50
135
O
Supply and return air conditions were joined to indicate cooling process
Yes/No
0.50
0.30
O
D6
Module C - Commissioning - Complete Installation
136
O
Project completed requiring no additional materilas
Yes/No
0.50
137
O
Covers installed securely on all equipment
Yes/No
0.50
138
O
No burn marks and no damage on any equipment from installation
Yes/No
0.70
139
O
Installation not damaged in any ways
Yes/No
0.50
140
O
System left in correct operation
Yes/No
0.50
24.00
Sub
Criteria
ID
E1
WSSS
section
Sub - Criteria
Name or Description
ModuleC - Mechanical Fault Finding
For Objective Assessment Only
Aspect
No
Aspect
Type
O = Obj
S = Sub
141
O
The unit was tested for short circuit, insulation resistance and earth continuity prior to energising
1.00
142
O
The fault was correctly identified, repaired, recorded and reclaim started in under 30 minutes
3.00
143
O
The fault was correctly identified, repaired, recorded and reclaim started in under 60 minutes
2.50
144
O
The fault was correctly identified, repaired, recorded and reclaim started in under 90 minutes
2.00
145
O
The fault was correctly identified, repaired, recorded and reclaim started in under 120 minutes
1.50
Aspect - Description
Requirement
or Nominal
Size
Add - (Extra Aspect Information)
Max
Mark
10.00
Sub
Criteria
ID
Sub - Criteria
WSSS
section
F1
Name or Description
Module C - Reclaim Refrigerant
F2
Module C - Evacuation
F3
Module C - Charge with Refrigerant
Asepct
No
Aspect
Type
Aspect - Description
O = Obj
S = Sub
For Objective Assessment Only
Requirement
or Nominal Add - (Extra Aspect Information)
Size
Max
Mark
146
O
Power supply to air conditioner was isolated before refrigerant recovery started
0.60
147
O
Service manifold gauge lines were fitted to the system in the correct way with minimal loss of refrigerant
0.50
148
O
Moisture contamination was prevented without loss of refrigerant
0.50
149
O
The correct refrigerant cylinder was selected for the recovery of refrigerant
0.40
150
O
Refrigerant cylinder weighed and recorded before recovery started
1.00
151
O
Refrigerant recovery lines set up was correct first time
1.00
152
O
The full refrigerant charge was removed from the system using recovery machine
1.00
153
O
Electronic leak check was made during recovery of refrigerant
1.00
154
O
Syetem pressure were at atmospheric pressure or below after recovery was completed
1.00
155
O
All service caps repalced on the recovery unit and recovery cylinder
0.50
156
O
The quantity of refrigernat recovered from the system was recorded
0.50
157
O
First vacuum attemp meets required standards
1.00
158
O
The vacuum held when isolated from vacuum pump for 10 minutes after any attempt
1.50
159
O
The correct refrigerant charge weighed into the system and recorded, using an accetable method
1.00
160
O
Amount of refrigerant added is within accetable guidelines
1.00
161
O
The gauges were removed from the system with the minimals loss of refrigerant.
0.50
13.00
Sub
Criteria
ID
G1
G2
G3
WSSS
section
Sub - Criteria
Name or Description
Module A - Work Practices and safety
Module B - Work Practices and safety
Module C - Work Practices and safety
Aspect
No
Aspect
Type
Aspect - Description
O = Obj
S = Sub
For Objective Assessment Only
Requirement
or Nominal Add - (Extra Aspect Information)
Size
Max
Mark
162
O
Protective gloves were worn at all times when exposed to heat sources
0.50
163
O
Protective eye wear was worn at all times while brazing
1.00
164
O
The competitors always used the correct tools and safe work practices for every actvity
0.50
165
O
The competitors brazing torches and regulators are left at atmospheric prssure on completion of modules
1.00
166
O
Protective gloves were worn at all times when exposed to heat sources and cut hazards
0.50
167
O
Protective eye wear was worn at all times while brazing, drilling, handling refrigerant, glycol and nitrogen
1.00
168
O
The competitors always used the correct tools and safe work practices for every actvity
0.50
169
O
The competitors brazing torches and regulators are left at atmospheric prssure on completion of modules
1.00
170
O
Protective gloves were worn at all times when exposed to heat sources and cut hazards
0.50
171
O
Protective eye wear was worn at all times while brazing, drilling, handling refrigerant and nitrogen
1.00
172
O
The competitors always used the correct tools and safe work practices for every actvity
0.50
173
O
The competitors brazing torches and regulators are left at atmospheric prssure on completion of modules
1.00
Skill name
Refrigeration and Air Conditioning
Criteria
Marks
Section
Criterion
Modules
Objective
Total
Section
Criterion
A
B
A
Component Fabrication
12
12
A
Component Fabrication
B
Component & System Installation
20
20
B
Component & System Installation
20
C
Electrical Installation
12
12
C
Electrical Installation
12
D
Commissioning & Adjustment
24
24
D
Commissioning & Adjustment
15
E
Mechanical Fault Finding & Repair
10
10
E
Mechanical Fault Finding & Repair
F
Electrical Fault Finding & Repair
0
0
F
Electrical Fault Finding & Repair
G
Refrigerant Recovery & Emission
control
13
13
G
Refrigerant Recovery & Emission
control
H
Work practices and Safety
9
9
H
Work practices and Safety
3
3
100
100
Total
15
55
Total
12
5
Modules
C
Total
12
20
0
12
9
24
10
10
0
8
13
3
9
30
100