Maintenance
SY50U Excavator OMM
5-38
Operation and Maintenance Manual — 0120
SANY
Air Conditioning Storage
When the air conditioning will not be used for an extended period of time, it should be operated for 3 to 5 minutes
each month in order to lubricate the compressor components and air conditioning system seals.
Air Conditioning Components Inspection and Maintenance Schedule
Item
Description
Service Interval
Refrigerant (R134a)
Check for leaks in lines, fittings, and components. Daily
Condenser
Check if condenser fins are plugged.
When required
Compressor
Check the compressor for function and leaks.
Every 4000 service hours
V-belt
Check tension.
Every 250 service hours
Check for damage, wear, and deterioration.
Blower speed
adjustment dial
Check fan motor and fan operation.
Daily
Check speed adjustment function.
Temperature
adjustment dial
Check for normal operation.
Daily
Fasteners
Loose connections and fasteners.
Every 6 months