Carrier HFC-134A installation instructions A23-1571 Cables, A23-1561

OIL HEATER CONDUIT ASY

OIL PUMP CONDUIT ASY

VAPORIZER HEATER CONDUIT ASY

VFD COOLING LINE

O-RING FACE SEAL

COUPLINGS

OIL RECLAIM

ACTUATOR CABLE

VFD COOLING

SOLENOID CABLE

TEMPERATURE SENSOR

CABLES

PRESSURE SENSOR

a23-1571 CABLES

Fig. 20 — Control Panel Back

Lifting the Control Center — Care should be used to prevent damage due to dropping or jolting when moving the control center. A fork truck or similar means of lifting and transporting may be used. Sling in a manner that will equalize the load at the pickup points. Use a spreader bar if the angle of the sling is less than 45 degrees relative to horizontal. Do not jolt while lifting.

Use the following procedure to lift the control center.

1.Remove the rubber hole plugs in the top of the control center and fully thread in 4 eyebolts or swivel hoist rings (see Fig. 21). Lifting hardware must have 3/4 in.-10 x 2 in. long threads and must have a working load limit of at least 6000 lb (2722 kg). Typical eyebolts are Chicago Hardware (size 28) or Grainger (P/N 5ZA63).

2.Attach a sling to the four lifting eyebolts. Make certain that the angle of the sling is not less than 45 degrees relative to horizontal.

3.Using an overhead or portable hoist (minimum 2 ton rated capacity), attach a free-fall chain to the sling secured to the drive. Take up any slack in the chain.

4.Rig the control center and remove the bolts that secure it to the VFD mounting brackets on the condenser (see Fig. 21).

5.Confirm that welding procedures comply with local Pressure Vessel Codes before removing a portion of the VFD support bracket from the condenser. Custom brack- ets should be fabricated if part of the VFD supports must be cut off of the condenser to reduce the width of the condenser assembly. Clamp ¼-in. plates over both sides of the VFD bracket and drill two pairs of holes that

3/4 IN. - 10 x 2 IN. LIFTING EYEBOLT WITH SHOULDER OR SWIVEL HOIST RING 6000 LB (2722 KG) WORKING LOAD LIMIT TYPICAL — CHICAGO HARDWARE P/N 28 GRAINGER P/N 5ZA63

LIFTING	45° MIN
EYEBOLT

a23-1561

Fig. 21 — Control Center Lifting Points

straddle the line along which the VFD brackets will be cut. This will allow the VFD brackets to be reinstalled and welded in their original position.

NOTE: To reassemble, follow steps in reverse order. Connect sensors and cables after major components have been secured to reduce the risk damaging them. (See Fig. 22.)

REMOVE THE DISCHARGE PIPE ASSEMBLY FROM THE CONDENSER

NOTE: For steps 1 through 6 refer to Fig. 12.

The condenser relief valve and relief valve vent piping should be removed if they will interfere with discharge pipe assembly rigging.

1.Remove the discharge pipe assembly relief valve and relief valve vent piping.

2.Disconnect the compressor discharge temperature sensor.

3.Disconnect the compressor discharge pressure sensor and remove the high discharge pressure switch sensor.

4.Rig the discharge pipe assembly and remove the bolts from the compressor discharge and condenser inlet flange. Note the position and orientation of the discharge isolation valve on the condenser inlet flange.

5.Remove the discharge pipe assembly.

6.Cover all openings.

NOTE: To reassemble, follow steps in reverse order. Connect sensors and cables after major components have been secured to reduce the risk of damaging them.

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