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Remove Air After Opening Chiller To; Transfer Refrigerant Charge (From Storage Tank To Machine); Transfer Refrigerant Charge; Machine To Storage Tank Located Below Machine - Carrier 17DA Start-Up, Operation And Maintenance Instructions Manual

Open-drive centrifugal liquid chillers 50/60 hz
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4. Start the pumpout compressor (control switch at ON
position).
5. Operate pumpout compressor until suction gage reads
highest sustained vacuum (about 28 in. Hg VAC or
psia [6.9 kPa]).
6. Close valve 8.
7. Stop compressor (control switch at OFF position).
REMOVE AIR AFTER OPENING CHILLER TO ATMO-
SPHERE (Refrigerant Charge in Storage Tank) — Perform
the following procedure. See Fig. 4 for valve numbers.
1. Place the control switch in the OFF position.
2. Close valves 2, 4, 5, 9, 10, 11 and 13.
3. Open valves 1, 3, 6, 7, 8, and 12.
Valve
1
2
3
4
Condition
O C O C C O O O C
4. Start pumpout compressor by putting control switch in
the ON position.
5. Operate pumpout compressor until suction gage reads
highest sustained vacuum (about 28 in. hg or 1 psia
[6.9 kPa]).
6. Close valve 8.
7. Stop compressor by placing the control switch in the OFF
position.
TRANSFER REFRIGERANT CHARGE (From Storage
Tank to Machine) — Perform the following procedure. See
Fig. 4 for valve numbers.
1. Place control switch in OFF position.
2. Operate cooler water pump and ensure that there is water
flow through the cooler.
3. Close valves 2, 4, 5, 6, 7, 8, 9, 10, and 11.
4. Open valves 1, 3, 12, and 13.
Valve
1
2
3
4
Condition
O C O C C C C C C
CAUTION
Follow steps 5 and 6 carefully to prevent damage from a
freeze-up.
5. Slowly open valve 5 and allow refrigerant vapor into the
chiller until chiller pressure increases to 35 psig (141 kPa)
for R-134a. Feed refrigerant slowly to avoid freeze-up.
6. Close valve 5.
7. Start the pumpout compressor (control switch in the
AUTO position).
8. When the cooler pressure is lower than storage tank pres-
sure, open valve 11 and refrigerant will flow from the
storage tank to the machine.
9. Shut valve 11 when refrigerant level reaches the charge
level mark on the cooler sight glass.
10. Turn off the pumpout compressor (control switch in the
OFF position).
11. Close valves 3, 4, and 12.
TRANSFER REFRIGERANT CHARGE (From Machine
to Storage Tank Located Below Machine) — Perform
following procedure. See Fig. 4 for valve numbers.
1. Vent storage tank to machine by opening valves 1, 2, 4,
and 12.
2. Open valves 11 and drain liquid from the cooler.
Valve
1
2
3
4
Condition
O O C O C C C C C
5
6 7
8
9
10
11
12
C
C
O
5
6 7
8
9
10 11 12 13
C
C
O
5
6 7
8
9
10
11
12
C
O
O
3. Operate the cooler water pump.
4. Open valves 3, 6, 7, and 9.
5. Close valves 2, 4, 5, 10 ,11, and 13.
1
Valve
1
Condition
O C O C C O O C O
6. Run cooling water through the pumpout condenser.
7. Operate the pumpout compressor (control switch in the
ON position).
8. At 25 in. Hg VAC (2.5 psia, 17.21 kPa) in cooler, stop the
pumpout compressor. Close all valves and shut off
pumps.
TRANSFER REFRIGERANT CHARGE (From Machine
to Storage Tank Located Above or Level with Machine) —
Perform the following procedure. See Fig. 4 for valve
13
numbers.
C
1. Operate the cooler and machine condenser water pumps.
2. Open valves 1, 2, 5, 6, 7, and 12.
3. Close valves 3, 4, 8, 9, 10 ,11, and 13.
Valve
1
Condition
O O C C O O O C C
4. Operate the pumpout compressor (control switch in the
ON position).
5. When the storage tank pressure is less than machine pres-
sure, open valve 11.
6. After the liquid has been transferred, stop the pumpout
compressor
Continue to operate the cooler water pump.
7. Open valves 3, 6, 7 and 9.
8. Close valves 2, 4, 5, 10, 11, and 13.
Valve
1
Condition
O C O C C O O C O
9. Run cooling water through the pumpout condenser.
O
10. Operate the pumpout compressor (control switch in the
ON position).
11. At 25 in. Hg VAC (2.5 psia, 17.21 kPa) in cooler, stop the
pumpout compressor. Close all valves and shut off
pumps.
PRESSURIZE MACHINE AND STORAGE TANK (No
Refrigerant in System) — Perform the following procedure.
See Fig. 4 for valve numbers.
1. Open valves 3, 4, 6, 7, 9, 11, and 13.
2. Close valves 1, 2, 5, 8, 10 , and 12.
Valve
1
Condition
C C O O C O O C O
3. Operate the pumpout compressor (control switch in the
ON position) until desired pressure is reached. Do not ex-
ceed design pressure of vessels.
4. Stop the pumpout compressor (control switch in the OFF
position).
5. Close valve 13.
Do not use refrigerant or air for leak testing. Personal
injury could result. Only use nitrogen for leak testing.
the
DISTILL REFRIGERANT CHARGE — Water, oil, and im-
purities can be removed from the refrigerant while transferring
the charge from storage tank to machine. Perform the follow-
ing procedure. See Fig. 4 for valve numbers.
1. Operate the cooler and machine condenser water pumps.
13
C
12
2
3
4
5
6
7 8
9
10
C
2
3
4
5
6
7 8
9
10
C
and
the
condenser
2
3
4
5
6
7 8
9
10
C
2
3
4
5
6
7 8
9
10
C
WARNING
11
12
13
C
O
C
11
12
13
C
O
C
water
pump.
11
12
13
C
O
C
11
12
13
O
C
O
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