Service And Repairs; General Precautions For Removing And Installing Air Conditioning System Components - Toro Groundsmaster 5900 Series Service Manual

Service and Repairs

General Precautions for Removing and Installing Air Conditioning
System Components
Operator Cab : Service and Repairs
The air conditioning system is under high pressure. Do not loosen
any system fitting or component until after the system has been
completely discharged by a certified A/C service technician.
Always wear safety goggles or a face shield when working with air
conditioning system components. Also, do not allow refrigerant
contact with your skin or eyes as there would be the possibility of
serious injury.
Never use compressed air to leak test or pressure test the air
conditioning system. Under certain conditions, pressurized mixtures
of refrigerant and air can be combustible.
1. Before servicing any air conditioning system components, park machine on a
level surface, lower cutting decks or attachments and stop engine. Remove
key from the key switch.
2. Clean machine before disconnecting, removing or disassembling any air
conditioning system components. Thorough cleaning will prevent system
contamination while performing service procedures.
3. Before loosening or removing any air conditioning system hose or other
component, have a certified air conditioning service technician recover the
system refrigerant and then evacuate the air conditioning system completely.
It is illegal to vent refrigerant to the atmosphere.
4. Put caps or plugs on any air conditioning system lines, fittings or components
left open or exposed to prevent moisture and contaminants from entering
the system.
5. Put labels on disconnected lines and hoses for proper installation after
repairs are completed.
6. If compressor is removed from machine, keep compressor in the same
orientation as the installed position. This will prevent compressor oil from
filling the compressor cylinders.
7. Note the position of fittings (especially elbow fittings) before removal. Mark
parts if necessary to make sure they will be aligned properly when reinstalling
hoses and tubes.
8. Always use a DOT approved tank for storing used and recycled refrigerants.
CAUTION
WARNING
CAUTION
Page 9–4 Groundsmaster ® 5900 & 5910
16227SL Rev B