Toro Groundsmaster 5900 Series Service Manual page 491

General Precautions for Removing and Installing Air Conditioning
System Components (continued)
Groundsmaster ® 5900 & 5910
16227SL Rev B
9. The Groundsmaster 5910 air conditioning system uses R134a refrigerant.
DO NOT use other refrigerants in the system. A/C system capacity is 3.43 lb
of R134a refrigerant.
10. Refrigerant containers (either full or empty) are under pressure that will
increase if the containers are heated. DO NOT expose refrigerant containers
to high heat sources or flame.
11. Be sure the work area is properly ventilated to prevent any accumulation of
refrigerant or other fumes.
12. Make sure that caps are always placed on the pressure hose ports. These
caps prevent refrigerant leakage from the system.
13. The A/C drier−receiver component is used to collect moisture that will reduce
air conditioning performance. If the air conditioning system is opened for
component repair or replacement, make sure that the drier−receiver ports are
plugged to prevent damage to the drier−receiver. If either the compressor
or A/C expansion valve is replaced, replacement of the drier−receiver is
also recommended.
14. After installing air conditioning components, have a certified air conditioning
service technician evacuate the air conditioning system completely, properly
recharge the system with R134a refrigerant and then leak test the system.
Page 9–5 Operator Cab : Service and Repairs