Carrier 05G TWIN PORT Service Manual download pdf (Page 15)

2--1 62--11052

SECTION 2

COMPRESSOR REPLACEMENT

2.1 COMPRESSOR REMOVAL

Refer to the operation and service manual covering the

equipment in which the compressor is installed for

specific removal instructions. A general removal

procedure is given below.

a. If compressor is completely inoperative, frontseat the

suction and discharge service valves to trap the

refrigerant in the unit. If the compressor will operate,

pump down the unit; then, frontseat the suction and

discharge service valves.

b. Ensure power source is removed from any controls

installed on the compressor.

c. Remove refrigerant from the compressor using a

refrigerant recovery system.

d. Disconnect refrigerant lines at service valve flange

connections on the compressor; retain hardware.

e. Remove any components necessary to gain access

to the compressor or to enable removal.

f. Disconnect the drive mechanism at the compressor.

g. Remove mounting hardware and remove

compressor from unit.

h. If compressor is to be repaired, refer to section 3 for

repair procedures. if a replacement compressor is to

be installed, refer to section 2.2 for replacement

procedures.

2.2 COMPRESSOR REPLACEMENT

Consult the unit service parts list for the correct

replacement.

Service replacement compressors are furnished

without suction and discharge service valves and

unloader valves. The service valves are normally

retained on the unit to isolate the refrigerant lines during

compressor replacement. Blank--off pads are installed

on the service replacement compressor valve flanges.

These pads must be removed prior to installing the

compressor. If the defective compressor is to be

returned for overhaul or repair, install the pads on the

compressor for sealing purposes during shipment.

Service replacement compressors are furnished with

cylinder head bypass piston plugs installed on the

unloader flanges in lieu of the unloader valves. The

unloaders (if used) must be removed from the defective

compressor and transferred to the replacement

compressor prior to installation. Refer to section 2.2.1.

If the defective compressor is to be returned for

overhaul or repair, install the plugs on the compressor

for sealing purposes during shipment.

2.2.1 Installing Compressor Unloaders

a. Remove the three socket head capscrews holding

piston plug to cylinder head of the replacement

compressor. See F igure 2-1.

1. Capscrews

2. Flange Cover

3. Gasket

4. Spring

5. Bypass Piston Plug

6. Seat Ring

7. Strainer

Figure 2-1. Removal of Piston Plug

b. Remove flange cover, gasket, spring, bypass piston

plug, and seat ring. A tapped hole is provided in piston

plug for use with a jackscrew to enable removal of the

plug. One of the socket head capscrews may be used

as a jackscrew.

c. Remove the three socket head capscrews holding

unloader in the cylinder head of the defective

compressor; remove the unloader and retain the

capscrews.

NOTE

Capscrews removed from the bypass piston

plug flange cover are not interchangeable with

capacity control unloader valve capscrews.

When installing the unloaders, be sure to use

the unloader capscrews.

d. Using a new gasket and unloader ring pliers (P/N

07--00223), install the unloaders in the cylinder heads

of the replacement compressor. Refer to Table 3-1,

for required torque values.

e. If the defective compressor is to be returned for

overhaul or repair, install the bypass piston plug,

spring, seat ring and flange cover onto the cylinder

heads.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 31 32

Comments to this Manuals

No comments

Carrier 05G TWIN PORT Service Manual Page 15

Comments to this Manuals

Related products and manuals for Air compressors Carrier 05G TWIN PORT