Toro 02891, Operator'S Manual, Page: 7 / 16

Maintenance
Note:
Determine the left and right sides of the machine from the normal operating position.
Recommended Maintenance Schedule(s)
Maintenance Service
Interval
Maintenance Procedure
After the first 100 hours
• Check all connections for tightness.
Every 50 hours
• Check the refrigerant level.
Every 250 hours
• Check the compressor magnetic clutch for correct operation.
• Check the water drain for blockage, and clean it as necessary.
• Examine and clean the condenser fins as necessary.
• Examine the condition of the electrical cables.
• Examine the condition and tightness of the electrical connectors.
Every 500 hours
• Check the compressor-fan belt condition and tension, and adjust it as necessary.
• Examine the hose lines for abrasion and general condition.
• Check all connections for leaks.
• Examine the condition of the climatic unit in the cab roof, and check the parts for
tightness.
• Check the compressor brackets tightness of fittings.
Every 2 years
• Change the dryer/filter.
CAUTION
If you leave the key in the ignition switch, someone could accidently start the engine and seriously injure
you or other bystanders.
Remove the key from the ignition before you do any maintenance.
Important:
All work on the refrigerant part of the air-conditioning system should be carried out by fully qualified
personnel.
•
You can use the air-conditioning system for many months of the cutting season. Follow the regular prescribed maintenance
to prolong the life of the system and ensure efficient operation. Failure to carry out the prescribed and documented
maintenance could invalidate the warranty on the system and its components.
•
Even if the air-conditioning system is used infrequently, follow the maintenance schedule, as aging and refrigerant loss
can occur with time.
•
Clean the condenser and evaporator fins with compressed air in the opposite direction of the normal air flow. If there
is any buildup of greasy deposits, clean it with a non-abrasive soap solution.
•
Low levels of refrigerant can reduce the efficiency of the air-conditioning unit.
•
Extremely low levels can cause the low-pressure switch to shut down the system.
• To check the refrigerant level, there is an integrated sight glass in the collecting tank. After filling, run the system for 5
minutes to allow all air bubbles to be purged from the system. Check the level after this period and top up is necessary.
The occasional air bubble can be accepted.
Important:
Do not spill compressor oil on the vehicle surface. It can cause discoloration of vehicle paint and
deterioration of acrylic or ABS plastic components.
•
When attaching the climatic hoses, oil the sealing rings with refrigerator oil.
•
After removal of climatic hoses from the air-conditioner system, always replace the O-rings with new ones specified
for refrigerant 134A.
•
When tightening or loosening fittings, always use 2 wrenches to prevent the tubes from twisting.
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