RS1300003 Rev. 0 44 December 1997
Service Procedures
Service Equipment
Listed below is equipment needed for proper
servicing of HFC134a systems. Verify equipment is
confirmed by manufacturer as being compatible with
HFC134a and ester oil system.
Equipment must be exclusively used for HFC134a.
Exclusive use of equipment only applies to italic
items.
• Evacuation pump
Check with vacuum pump supplier to verify
equipment is compatible for HFC134a. Robinair,
Model 15600, 2 stage, 6 cubic feet per minute pump
is recommended.
• Four-way manifold gauge set, with low loss hoses
• Leak detector
•
Charging cylinder
• Line piercing saddle valve
(Schroeder valves). Seals must be HFC134a and
ester oil compatible. Line piercing valves may be used
for diagnosis but are not suitable for evacuation or
charging, due to minute holes pierced in tubing. Do
not leave mechanical access valves on system.
Valves eventually will leak. Molecules of HFC134a are
smaller than other refrigerants and will leak where
other refrigerants would not.
• Swagging tools
•
Flaring tools
• Tubing cutter
• Flux
• Sil-Fos
• Silver solder
• Oil for swagging and flaring
Use only part #R0157532
• Copper tubing
Use only part #R0174075 and #R0174076
• Dry nitrogen
99.5% minimum purity, with -40°F or lower dew point
• Crimp tool
• Tube bender
• Micron vacuum gauge
• Process tube adaptor kit
• Heat trap paste
• ICI appliance grade HFC134a
Drier Replacement
Prior to opening refrigeration system, recover
HFC134a refrigerant for safe disposal.
Every time sealed HFC134a system is repaired, drier
filter must be replaced with, part # B2150504.
Cut drier out of system by completing the following
steps. Do not unbraze drier filter. Applying heat to
remove drier will allow moisture into system.
WARNING
To avoid death or severe personal injury, cut drier at
correct location. Cutting drier at incorrect location will
allow desiccant beads to scatter. Completely clean
area of beads, if spilled.
1. Score capillary tube close to drier and break.
2. Reform inlet tube to drier allowing enough space
for large tube cutter.
3. Cut circumference of drier at 1-1/4", below
condenser inlet tube joint to drier.
4. Remove drier.
5. Apply heat trap paste on post condenser tubes to
protect grommets from high heat.
6. Unbraze remaining part of drier. Remove drier
from system.
7. Discard drier in safe place. Do not leave drier with
customer. If refrigerator is under warranty, old
drier must accompany warranty claim.
Electronic Control
Electronic control is not repairable. If any component
in control is faulty, entire control must be replaced.
NOTE: Repair or replace all faulty line voltage
components before testing or replacing
electronic control. Do not assume problems are
caused by electronic control system. Opened,
shorted, grounded or otherwise faulty line
voltage components (including power cord and
wiring) can create problems that appear to be
caused by electronic control.
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and discharge
capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be
connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.
WARNING
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