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12 - 7
Fault Finding (cont'd)
No Air Conditioning
CHECK
ACTION
1
Are the controls set correctly, i.e. air conditioning
YES:
Check 2
selected, thermostat switch set to coldest position
NO:
Reset controls and retest.
and blower switched on?
2
Is the air conditioning (evaporator) blower working?
YES:
Check 3.
NO:
Check 4.
3
Is the compressor running (visual check of pulley/clutch)?
YES:
Check 9
NO:
Check 5.
4
Is the air conditioning fuse(s) blown?
YES:
Renew fuse(s) and retest.
NO:
Check 8.
5
Is there a 24V supply to the pressure switch harness?
YES:
Check 6.
NO:
Check 7.
6
Does the compressor clutch engage with
YES:
Replace pressure switch assembly.
pressure switch assembly bypassed?
NO:
Renew the compressor clutch and retest.
7
Does the clutch engage with thermostat switch
YES:
Renew thermostat switch and retest.
bypassed?
NO:
Check all electrical connections.
8
Are blower switch and wiring OK?
YES:
Renew blower unit complete.
NO:
Renew switch or wiring.
9
Is sight glass indication OK?
YES:
Check 10.
NO:
Charge check required by refrigeration engineer.
10
Is condenser air flow blocked?
YES:
Clean condenser and radiator.
NO:
Check 11.
11
Is evaporator air flow blocked?
YES:
Clean filter and, if necessary the evaporator.
NO:
Call in refrigeration engineer.
Section B
Body & Framework
9803/6410
Section B
12 - 7
Issue 1
Air Conditioning
Summary of Contents for JS130
Page 65: ...Section 3 Section 3 9803 6410 Issue 1 9 1 9 1 Routine Maintenance Component Location Diagram...
Page 118: ......
Page 119: ...3 1 Section C Electrics 9803 6410 Section C 3 1 Issue 1 Layout Operator s Cab...
Page 142: ...5 3 Section C Electrics 9803 6410 Section C 5 3 Issue 1 Pump Control FLOW CHART...
Page 207: ......
Page 209: ......
Page 210: ...3 4 Section E Hydraulics 9803 6410 Section E 3 4 Issue 2 Schematics Shuttle Block...
Page 532: ...Contents Page No Technical Data 1 1 i Engine 9803 6410 i Issue 1 Section K Section K...