Possible Engine Failures And Instructions On Their Troubleshooting - Belarus 2022.6 Operator's Manual

Table 6.12.2 – Possible failures of air-conditioning (mounted against order) and in-
structions for their troubleshooting
Failure, external manifestations,
cause
Compressor electromagnetic coupling will not respond (no metallic click while
Electric equipment failure
Coolant leakage took place
Electric equipment failure
When air conditioner operated in cooling mode warm air is supplied into cab
Valve PO-11 seal element break-
age
Coolant leakage from cab ventilation compartment
Disruption of heating unit tubes
(heating unit "defrosting" due to
incomplete drain
weather period operation)

6.17 Possible engine failures and instructions on their troubleshooting

The list of possible failures of engine D-260.4 S4 and instructions on their trouble-
shooting are specified in the engine operation manual 260 S4-0000100 OM.
turning temperature regulator)
By means of a tester or a multimeter, check oper-
ability of pressure sensor unit, sensor unit outputs
(red and pink wires) shall be "rung out" among
themselves. Check up operability of electric circuit
connections from compressor coupling to air condi-
tioner control console according to the electrical
equipment diagram
Detect the leak path.
Only specially trained personnel is allowed to de-
tect the leak path, replace hoses and air condi-
tioner components using special equipment (after-
sales service and repair shall be carried out by
CJSC "Belvneshinvest", Minsk, tel./fax 8-017-262-
40-75, 8-029-662-97-69, 8-029-628-67-98)
Non-operable conditioner fan electric motor
Check up operability of the corresponding fuse el-
ement located in the switching unit. Replace if it is
faulty.
If the safety lock is properly operating, check by
means of indicating lamp power supply on the
electric motor of air conditioner fan when the
switch is on and "ground" is available in electric
motor. If electric circuits are properly operating, but
there is lack of power supply, replace the switch.
Replace valve PO-11
Replace the conditioner climatic unit
during cool
Troubleshooting
219
2022.6-0000010 OM