LGMG MT86H, Руководство по эксплуатации и обслуживанию

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MT86H Operation and Maintenance Manual
131
Maintenance
items
Description
Maintenance interval
Weekly Monthly Bimonthly Quarterly Yearly
Electrical
element
Connector
Check clip plug for
looseness.
＋ ＋
Thermistor
switch
Check if it works
normally.
＋
Magnetic
clutch
Check if it meets
specified
requirements.
＋
Magnetic
clutch
bearing
Replace it if it
cannot rotate stably.
＋
Intake filter
Paper filter
element
Check it for dirt.
Clean or replace it according to specific
conditions.
Note: “+” indicates that adjustment is required and do repair if necessary; “ ‐ ” indicates that
replacement is required.
4.9.5 Fault diagnosis and troubleshooting list
S/N Symptom Probable causes Solutions
1
High pressure is
low
System leaks. Do leakage detection and repair.
Air return valve is closed. Open it.
There is a lack of refrigerant. Add refrigerant.
The air return valve of
compressor leaks.
Replace the valve.
The leaf valve of compressor is
damaged.
Replace it.
2
High pressure is too
high
There is air in the system. Refill the system with refrigerant.
The condenser is blocked. Clean the condenser.
The exhaust valve is closed. Open it.
There is excessive refrigerant. Discharge the extra.
3
Low air return
pressure
There is a lack of refrigerant. Add refrigerant.
The compressor piston is worn. Repair it.
The compressor cylinder gasket
leaks.
Replace the cylinder gasket.
The hose is twisted or squeezed
flat.
Replace the hose.
The air return valve of
compressor leaks.
Replace the valve plate.
There is moisture in the system. Replace the air drier.