Equipment Needed For Evacuation & Recharging; Installing Evacuation And Recharging Equipment - Electrolux FPRH17D7KF All Refrigerator Professional Series Servicing

Section 4 Refrigeration
CAUTION
Check the serial plate for the correct refrigerant
type. It is extremely important to verify the
type of refrigerant in the system before starting
any sealed system repairs.
With the possible exception of the vacuum
pump, all service equipment that comes in
contact with R-134a during evacuation and
recharging must be dedicated. Accordingly,
R-134a will require a dedicated charging
cylinder, manifold gauge set, process tube
adapters, and hoses. Any residual mineral oil
on other tools (tubing cutter, etc.) must be
thoroughly cleaned off before using on R-134a/
Ester oil systems. It will be necessary to check
with the manufacturer of your vacuum pump for
refrigerant and oil compatibility issues.
If you use a vacuum pump with mineral oil to
evacuate an R-134a system, it is ABSOLUTELY
ESSENTIAL to have a shut-off valve between the
pump and your manifold gauge set as shown
on page 4-10. The hand valve must be closed
during all times when the vacuum pump is
not operating. This will prevent the migration
of mineral oil vapor into the R134a/Ester oil
system. If the vacuum pump should stop during
evacuation for any reason, the hand pump
shut-off valve must be closed immediately.
Insure that your refrigeration hoses are specified
for use with R-134a refrigerant. Research has
shown that compounds in standard refrigeration
hoses may enter sealed systems and ultimately
restrict the cap tube in an R-134a system.
4-8
Equipment Needed for Evacuation &
Recharging:
• Heated charging cylinder
• Standard 3-port manifold gauge set:
- 4 charging hoses
- Tee fitting with valve core stem removed
(Robinair No. 40396)
- Hand shut-off valve (Robinair No.40380)
• Two stage vacuum pump
• Process tube adapter kit (Robinair No.12458)
• Tubing cutter
• Pinch-off tool capable of making leak proof seal
• Complete brazing torch set
• Small 3-corner file
• Grit cloth or Scotch-Brite
• 45% silver solder and flux
• Heat Gun
Installing Evacuation and Recharging
Equipment
1. Disconnect refrigerator/freezer from electrical supply.
2. If compressor was replaced, install correct sized
process tube adapter on process tube.
If compressor was not replaced, cut process tube
with tubing cutter leaving as much tube as possible
and install correct size process tube adapter.
3. Install correct sized process tube adapter on
high-side process tube.
4. Attach refrigeration service gauge manifold to
system in following order:
• Low-side (compound gauge) hose to suction
side process tube adapter.
• High-side (pressure gauge) hose to high-side
process tube adapter.
• Center port manifold hose before hand shut-off
valve to charging cylinder.
• Center port manifold hose after hand shut-off
valve to vacuum pump.