Carrier 23XL Specifiche Scaricare il pdf (Pagina 62)

d. Gradually crack open valve 5 to increase machine pres-

sure to 68 psig (469 kPa) [35 psig (141 kPa)]. Slowly

feed refrigerant to prevent freeze up.

e. Open valve 5 fully after reaching 68 psig (469 kPa)

[35 psig (141 kPa)]. Open liquid line valves 7a and 7b

until refrigerant pressure equalizes.

VALVE 1a 1b 2 3 4 5 6 7a 7b 8 11 12 13 14 15 16 17

CONDITION CC C

2. Transfer remaining refrigerant.

a. Close valve 5 and open valve 4.

VALVE 1a1b234567a7b811121314151617

CONDITION CC C

b. Turn off the water pumps through the LID.

c. Turn off the pumpout condenser water, and turn on

the pumpout compressor to push liquid out of the stor-

age tank.

d. Close liquid line valves 7a and 7b.

e. Turn off the pumpout compressor.

f. Close valves 3 and 4.

g. Open valves 2 and 5.

VALVE 1a 1b 2 3 4 5 6 7a 7b 8 11 12 13 14 15 16 17

CONDITION CC C C C

h. Turn on pumpout condenser water.

i. Run the pumpout compressor until the storage tank

pressure reaches 5 psig (34 kPa) (18 in. Hg [40 kPa

abs.] if repairing the tank).

j. Turn off the pumpout compressor.

k. Close valves 1a, 1b, 2, 5, and 6.

l. Turn off pumpout condenser water.

VALVE 1a1b234567a7b811121314151617

CONDITION C C CCCCC C C C

TRANSFER THE REFRIGERANT FROM MACHINE TO

STORAGE TANK

1. Equalize refrigerant pressure.

a. Valve positions:

VALVE 1a1b234567a7b811121314151617

CONDITION CCC CCC

b. Slowly open valve 5 and liquid line valves 7a and 7b

to allow liquid refrigerant to drain by gravity into the

storage tank.

VALVE 1a 1b 2 3 4 5 6 7a 7b 8 11 12 13 14 15 16 17

CONDITION CC C

2. Transfer the remaining liquid.

a. Turn off pumpout condenser water. Place valves in the

following positions:

VALVE 1a 1b 2 3 4 5 6 7a 7b 8 11 12 13 14 15 16 17

CONDITION CC C

b. Run the pumpout compressor for 30 minutes then close

valves 7a and 7b.

c. Turn off the pumpout compressor.

VALVE 1a 1b 2 3 4 5 6 7a 7b 8 11 12 13 14 15 16 17

CONDITION CC C C C

3. Remove any remaining refrigerant.

a. Turn on water pumps through the use of the Control

Test, Pumpdown table.

b. Turn on pumpout condenser water.

c. Place valves in the following positions:

VALVE 1a1b234567a7b811121314151617

CONDITION CCCCC

d. Run the pumpout compressor until the machine pres-

sure reaches 65 psig (448 kPa), [30 psig (207 kPa)],

then shut off the pumpout. Warm condenser water will

boil off any entrapped liquid refrigerant and machine

pressure will rise.

e. When the pressure rises to 70 psig (483 kPa) [40 psig

(276 kPa)], turn on the pumpout compressor until the

pressure again reaches 65 psig (448 kPa) [30 psig

(207 kPa)], and then turn off the compressor.

Repeat this process until the pressure no longer rises,

then turn on the pumpout compressor and pumpout un-

til the pressure reaches the pressure level speciﬁed by

the U.S. EPA’s latest publication of 40 CFR

part 80.

f. Close valves 1a, 1b, 3, 4, and 6.

VALVE 1a1b234567a7b811121314151617

CONDITION C C CCCCC C C C

g. Turn off the pumpout condenser water and continue

with the Control Test for Pumpdown, which will lock

out the machine compressor for operation.

4. Establish vacuum for service.

a. In order to conserve refrigerant, operate the pumpout

compressor until the machine pressure is reduced to

18 in. Hg vac., ref 30 in. bar. (40 kPa. abs.) following

Step 3e.

Machines with Isolation Valves — Transfer all re-

frigerant to condenser vessel.

NOTE: Valve 14 is only available or Frame 1 and 2 ma-

chines. Valves 16 and 17 are only available on Frame 4 ma-

chines.

1. Push refrigerant into condenser.

a. Valve positions:

VALVE 1a1b2345811121314151617

CONDITION CC C CCCCCC

b. Turn off machine water pumps and pumpout con-

denser water.

c. Turn on pumpout compressor to push liquid out of the

cooler/compressor.

d. When all liquid has been pushed into the condenser,

close cooler isolation valve 11.

e. Access the Control Test Pumpdown table on the LID

display to turn on the machine water pumps.

f. Turn off the pumpout compressor.

2. Evacuate gas from cooler/compressor vessel.

a. Close pumpout valves 2 and 5, and open valves 3 and

VALVE 1a 1b 2 3 4 5 8 11 12 13 14 15 16 17

CONDITION C CCCCCCCCC

b. Turn on pumpout condenser water.

c. Run pumpout until the compressor reaches 18 in. Hg

vac (40 kPa abs.). Monitor pressures on the LID and

on refrigerant gages.

d. Close valve 1a.

e. Turn off pumpout compressor.

f. Close valves 1b, 3, and 4.

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 ... 103 104

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Carrier 23XL Specifiche Pagina 62

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