Check Compressor Oil Level; Adjust Oil Charge; Liquid Charging Method; 60 Hz Additional Lubricant - Carrier AquaSnap 30MPA Series Controls, Start-Up, Operation, Service, And Troubleshooting

By following these evacuation and dehydration procedures,
the amount of moisture present in the system will be
minimized. It is required that liquid line filter driers be installed
between the condenser(s) and the expansion devices to capture
any foreign debris and provide additional moisture removal
capacity.

LIQUID CHARGING METHOD

For 30MP015-045: Add charge to the unit through the liquid
line service valve. Never charge liquid into the low-pressure
side of the system.
For 30MP050-071: Add the charge to the unit through the high
flow Schrader valve on the filter drier.
1. Close liquid line ball valve (30MPA only).
2. Connect a refrigerant cylinder loosely to the high flow
Schrader valve connection on the liquid line. Purge the
charging hose and tighten the connections.
3. Open the refrigerant cylinder valve.
4. If the system has been dehydrated and is under vacuum,
break the vacuum with refrigerant gas. For R-410A, build
up system pressure to 101 psig and 32 F (697 kPa and
0° C). Invert the refrigerant cylinder so that the liquid re-
frigerant will be charged.
5. a. For complete charge of 30MPW units, follow
charging by weight procedure. When charge is
nearly full, complete the process by observing the
sight glass for clear liquid flow while the unit is
operating. The use of sight glass charging is valid
only when unit is operating at full capacity.
b. For complete charge of 30MPA units or where
refrigerant cylinder cannot be weighed, follow the
condenser manufacturer's charging procedure or
follow charging by sight glass procedure. The use
of sight glass charging is valid only when unit is
operating at full capacity.
6. a. The 30MPA condenserless units are shipped
with a nitrogen holding charge. After installation
with the field-supplied system high side, the com-
plete system should be evacuated and charged per
the condenser manufacturer's charging procedure
or charged until the sight glass is clear (with the
unit running at full capacity). To achieve maxi-
CONDENSER
UNIT SIZE
09DP
30MPA015 S018
30MPA020 S020
30MPA030 S030
30MPA040 M040
30MPA045 M050
30MPA050 M050
30MPA055 M055
30MPA060 M060
30MPA065 M065
30MPA071 M075
CONDENSER
UNIT SIZE
09DP
30MPA015 S018
30MPA020 S020
30MPA030 S030
30MPA040 M040
30MPA045 M050
30MPA050 M050
30MPA055 M055
30MPA060 M060
30MPA065 M065
30MPA071 M075
Table 37 — 60 Hz Additional Lubricant (English)
ADDITIONAL LUBRICANT (FLUID OUNCES) REQUIRED FOR PIPING AND REFRIGERANT
Up to 25 ft 25 to 50 ft 50 to 75 ft
0 9
11 12
13 15
27 30
30
27
30
27
31
27
32
28
37
33
43
39
Table 38 — 60 Hz Additional Lubricant (SI)
ADDITIONAL LUBRICANT (ML) REQUIRED FOR PIPING AND REFRIGERANT
Up to 7.5 m 7.5 to 15 m 15 to 22.5 m
0 262
315 347
372 440
784 881
888
791
898 1014
783
911 1026
795
941 1056
825
1091 1206
976
1263 1378
1147
mum system capacity, add additional charge equal
to the difference between the condenser optimal
charge and the condenser minimum charge, which
can be obtained from the charge data provided in
the condenser installation instructions.
b. To ensure maximum performance of 30MPW
units, raise the compressor saturated discharge
temperature (SDT) to approximately 100 F
(37.8 C) by throttling the condenser water intake.
Add charge until there is approximately 9 to 12° F
(5.0 to 6.6° C) of system subcooling (SDT minus
actual temperature entering the expansion valve).
Check Compressor Oil Level —
refrigerant charge, allow each circuit to run fully loaded for
20 minutes. Stop the compressors and check the oil level. Oil
level should be 1 /
IMPORTANT: Oil level should only be checked when the
compressors are off.
Add oil only if necessary to bring the oil into view in the
sight glass. If oil is added, run the circuit for an additional
10 minutes, then stop and check oil level. If the level remains
low, check the piping system for proper design for oil return;
also, check the system for leaks. If checking the oil level with
unit running in part load, let unit run one hour, then run at full
load for 10 minutes. If oil does not return to acceptable sight
glass levels, check for correct suction piping and line sizing.
Adjust Oil Charge —
factory charged with oil, additional oil is likely required to
maintain the oil level in the compressor. Tables 37 and 38 indi-
cate the likely amount required based on the liquid line size
and system piping length. Additional lubricant estimate is
based on using recommended pipe sizes. Values listed are esti-
mates only. See Add Oil section for Carrier-approved oils.
After operating the compressor for a period of time, the oil
level should be between
compressor oil level should be checked with the compressor
off to avoid the sump turbulence when the compressor is run-
ning. Oil must be added if the oil level does not meet the
requirements.
75 to 100 ft 100 to 125 ft
11 12 13
13 14 21
17 20 22
33 36 51
33 37 52
34 38 53
35 39 53
36 40 54
41 45 59
47 51 65
22.5 to 30 m 30 to 37.5 m
319 352 384
380 413 620
508 575 643
977 1074 1511
984 1081 1518
1129 1546
1141 1558
1171 1588
1322 1739
1493 1910
39
After adjusting the
to 3 / up on the sight glass.
8 8
Although the compressors are
1 / and 3 / of the oil sight glass. The
8 8
125 to 150 ft 150 to 175 ft
14 15
23 26
24 27
57 63
57 63
59 65
59 65
60 66
65 71
71 77
37.5 to 45 m 45 to 52.5 m
417 450
688 756
710 778
1676 1841
1683 1848
1722 1897
1734 1910
1764 1939
1914 2090
2086 2261
175 to 200 ft
16
28
29
68
69
71
71
72
77
83
52.5 to 60 m
482
823
846
2005
2012
2073
2085
2115
2266
2437