Friedrich ZoneAire Select PZH12K3SC handleiding

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Handleiding

R-32 SEALED SYSTEM REPAIRS

Compressor Replacement -Special Procedure in Case of Compressor Burnout

WARNING

HIGH PRESSURE HAZARD

Sealed Refrigeration System contains refrigerant

and oil under high pressure.

Proper safety procedures must be followed,

and proper protective clothing must be worn

when working with refrigerants.

Failure to follow these procedures could

result in serious injury or death.

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before service or

installation. Extreme care must be used, if it

becomes necessary to work on equipment with

power applied.

Failure to do so could result in serious injury or

death.

WARNING

EXPLOSION HAZARD

The use of nitrogen requires a pressure

regulator. Follow all safety procedures and

wear protective safety clothing etc.

Failure to follow proper safety procedures

could result in serious injury or death.

1. Recover all refrigerant and oil from the system. Refer to Refrigerant

Removal, Recovery, and Evacuation Section of this manual.

2. Remove compressor, capillary tube and ﬁlter drier from the system.

CAUTION: Seal all openings on the defective compressor immediately.

Compressor manufacturers will void warranties on units received not

properly sealed. Do not distort the manufacturers tube connections.

3. Flush evaporator condenser and all connecting tubing with dry

nitrogen or equivalent. Use approved ﬂushing agent to remove all

contamination from system. Inspect suction and discharge line for carbon

deposits. Remove and clean if necessary. Ensure all acid is neutralized.

4. Reassemble the system, including new drier strainer and capillary

tube.

5. Braze all connections. Refer to the Brazing section of this manual.

6. Pressurize with nitrogen to 550 psi and leak test all connections with a

leak detection ﬂuid. Repair any leaks found.

Repeat Step 6 to insure no more leaks are present.

7. Charge system with proper amount of refrigerant per the model

nameplate. Refer to the refrigerant charging section of this manual.

WARNING

NEVER, under any circumstances,

liquid charge a rotary-compressor

through the LOW side. Doing so

would cause permanent damage to

the new compressor. Use a charging

adapter.

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