Refrigerant Recovery and Recharging
Special Tools
GE-45037 A/C Oil Injector
For equivalent regional tools, refer to
Special Tools
.
Warning: To prevent personal injury, avoid breathing A/C Refrigerant and lubricant vapor or mist. Work in a well ventilated
area. To remove refrigerant from the A/C System, use service equipment designed for recovery that is certified to meet the
requirements of the appropriate SAE Standards. If an accidental system discharge occurs, ventilate the work area before
continuing service. Additional health and safety information may be obtained from the refrigerant, refrigerant recovery, and
lubricant manufacturers.
Warning: For personal protection, goggles and lint-free gloves should be worn and a clean cloth wrapped around fittings,
valves, and connections when doing work that includes opening the refrigerant system. If refrigerant comes in contact with
any part of the body severe frostbite and personal injury can result. The exposed area should be flushed immediately with cold
water and prompt medical help should be obtained.
Caution: R-134a is the only approved refrigerant for use in this vehicle. The use of any other refrigerant may result in poor
system performance or component failure.
Caution: To avoid system damage use only R-134a dedicated tools when servicing the A/C system.
Caution: Use only Polyalkylene Glycol Synthetic Refrigerant Oil (PAG) for internal circulation through the R-134a A/C system
and only 525 viscosity mineral oil on fitting threads and O-rings. If lubricants other than those specified are used, compressor
failure and/or fitting seizure may result.
Caution: R-12 refrigerant and R-134a refrigerant must never be mixed, even in the smallest of amounts, as they are
incompatible with each other. If the refrigerants are mixed, compressor failure is likely to occur. Refer to the manufacturer
instructions included with the service equipment before servicing.
The air conditioning filling device service center is a complete air conditioning service center for R-134a. The ACR
2000 recovers,
recycles, evacuates and recharges A/C refrigerant quickly, accurately and automatically. The unit has a display screen that contains
the function controls and displays prompts that will lead the technician through the recover, recycle, evacuate and recharge
operations. R-134a is recovered into and charged out of an internal storage vessel. The ACR
2000 automatically replenishes this
vessel from an external source tank in order to maintain a constant 5.45–6.82
kg (12–15
lb) of A/C refrigerant.
The ACR
2000 has a built in A/C refrigerant identifier that will test for contamination, prior to recovery and will notify the technician
if there are foreign gases present in the A/C system. If foreign gases are present, the ACR
2000 will not recover the refrigerant from
the A/C system.
The ACR
2000 also features automatic air purge, single pass recycling and an automatic oil drain.
Refer to the air conditioning filling device service center manual for operation and setup instruction. Always recharge the A/C system
with the proper amount of R-134a. Refer to
Refrigerant System Specifications
for the correct amount.
A/C Refrigerant System Oil Charge Replenishing
If oil was removed from the A/C system during the recovery process or due to component replacement, the oil must be replenished.
Oil can be injected into a charged system using
GE-45037 injector
. For the proper quantities of oil to add to the A/C refrigerant system, refer to
Refrigerant System Specifications
.
© 2011 General Motors. All rights reserved.
HEATING VENTILATION AND AIR CONDITIONING
11
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