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Groundsmaster 4110--D Operator CabPage 9 -- 3
Service and Repairs
General Precautions for Removing and Installing Air Conditioning System Components
CAUTION
The air conditioning system is under high pres-
sure. Do not loosen any system fitting or compo-
nent until after the system has been completely
discharged by a certified A/C service technician.
WARNING
Always wear safety goggles or a face shield
when working w ith air conditioning system com-
ponents. Also, do not allow refrigerant contact
with your skin or eyes as there would be the pos-
sibility of serious i njury.
CAUTION
Never use compressed air to leak test or pres-
sure test the air conditioning system. Under cer-
tain conditions, pressurized mixtures of refriger-
ant and air can be combustible.
1. Before servicing any air conditioning system compo-
nents, park machine on a level surface, apply parking
brake, lower cutting deck or attachments and stop en-
gine. Remove key from the ignition switch.
2. Clean machine before disconnecting, removing or
disassembling any air conditioning system compo-
nents. Thorough cleaning will prevent system contami-
nation while performing service procedures.
3. Put caps or plugs on any lines, fittings or components
left open or exposed to prevent system contamination.
4. Before loosening or removing any air conditioning
system hose or other component, have a certified air
conditioning service technician recover the system re-
frigerant and then evacuate the air conditioning system
completely. It is illegal to vent refrigerant to the atmo-
sphere.
5. Put labels on disconnected lines and hoses for prop-
er installation after repairs are completed.
6. If compressor is removed from machine, keep com-
pressor in the same orientation as the installed position.
This will prevent compressor oil from filling the compres-
sor 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.
9. The Groundsmaster 4110--D air conditioning system
uses R134a refrigerant. DO NOT use other refrigerants
in the system. A/C system capacity is 1.35 pounds of
R134a refrigerant.
10.Refrigerant containers (either full or empty) are un-
der 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 pre-
vent any accumulation of refrigerant or o ther fumes.
12.Make sure that caps are always placed on the pres-
sure hose ports. These caps prevent refrigerant leakage
from the system.
13.The 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, drier--receiver replacement is
recommended.
14.After installing air conditioning components, have a
certified air conditioningservice technician evacuate the
air conditioning system completely, properly recharge
the system with R134a refrigerant and then leak test the
system.
Operator
Cab