Maytag MTB1504ARW Instrukcje Operacyjne Pobierz pdf (Strona 10)

Drier Replacement

Before 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 drive moisture into system.

To avoid risk of severe personal injury or death, 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 the circumference of the capillary tube close

to drier and break at the score.

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 the cabinet bottom 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.

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

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a 10,000 ohm resistor before attempting

to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

WARNING

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