Specifications

5
Recharging liquid refrigerant
CAUTION:HR units are charged with liquid R22
refrigerant.
NOTE: Regularly carry out leak checks and immediately
repair any leak found.
Undercharge
If there is not enough refrigerant in the system, this is
indicated by gas bubbles in the moisture sight glass.
If the undercharge is significant, large bubbles appear in the
moisture sight glass, and the suction pressure drops. The
compressor suction superheat is also high. The machine must
be recharged after the leak has been repaired.
Find the leak and completely drain the system with a
refrigerant recovery unit. Carry out the repair, leak test and
then recharge the system
IMPORTANT: After the leak has been repaired, the
circuit must be tested, with out exceeding the maximum
low-side operating pressure shown on the unit nameplate.
The refrigerant must always be recharged in the liquid
phase into the liquid line.
The refrigerant cylinder must always contain at least 10%
of its initial charge.
CAUTION: R407C Oils are absolutely not compatible with
R22 oils.
OIL CHARGE
All units are factory charged with oil. If oil is visible in
sight glass, start compressor. Observe level and add oil, if
required, to bring Level in Crankcase to middle of bull
,
s-eye
during steady operation. To add or remove oil see Standard
Service Techniques Manual, Chapter 1, Refrigerants.
NOTE: To ensure trouble-free operation, use only
Recommended oil, see below Do not reuse oil that has been
drained out, or oil that has been left open to the atmosphere.
To Add Oil - Close suction shutoff valve and pump down
crankcase to 2 psig. (Low-pressure cutout must be jumpered.)
Wait a few minutes and repeat as needed until pressure
remains at 2 psig. Remove oil fill plug above bull
,
s-eye, add
oil thru plug hole and replace plug. Run compressor for about
20 minutes and check oil level.
To Remove Oil-pump down compressor to 2 psig. Loosen the
1/4- in. pipe plug in compressor base and allow the oil to seep
out past the threads of the plug. The crankcase will be under
slight pressure. Be careful not to remove the plug; the entire
oil charge may be lost. Small amounts of oil can be removed
while compressor is running thru oil pump discharge
connection.
The compressors installed in these units have an oil charge
(91) to ensure their correct operation.
Check that the oil level is between 1/8 and 3/8 up the sight
glass before start-up and after normal unit operation.
NOTE: Use only oils, which have been approved for the
compressors. Never use oils, which have been exposed to air.
Recommended Oils:
 R407C compressors:
- Carrier specification: PP 47 26
- Mobile oil EAL 68 (original charge)
 R22 compressors:
- Mineral oil, Carrier specification: pp 3326
-Gargoyle Artic (Mobil Oil, original charge)
- Suniso 3 GS (Sun Oil Co.)
CAUTION: R407C oils are absolutely not compatible
with R22 oils.
Table 3-ELECTRICAL DATA
COMPLETE UNIT AND COMPRESSORS
VOLTS
*
230 400
UNIT 30 MKW WSA
ICF
ICI WSA ICF ICI
040
43.5 138 368 319 81 234 205
050
44.2 144 404 355 83 234 205
HR
060
53.6 171 431 355 97 248 205
040
49.6 156 376 319 90 238 205
050
50.9 165 412 355 98 238 205 HS
060
61.12 194 441 355 117 257 205
COMP R
06E
KW
FLA
LRA
MTA FLA
LRA MTA
150
17.4 49 191 69 29 110 41
250
20.0 57 250 80 33 144 46
HR
275
26.8 76 255 106 43 205 60
250
20.0 57 250 80 33 144 46
HS
275
30.9 86 355 120 52 205 73
Table 4-COMPRESSOR 06E USAGE†
HR
HS
Circuit and Compressor Numbers
UNIT
30
1 2 1 2
040
B250 B150 B250 B250
050
J275 B150 J275 B250
060
J275 J275 J275 J275
FLA -
Full Load Amps
ICF -
Maximum Instantaneous Current Flow (amps) during
starting (sum of LRA for last compressor to start plus FLA for
all other running compressors).
ICI -
Maximum Incremental Current Inrush (amps) during
starting (LRA for largest compressor in unit).
KW -
Maximum Input Power (each compressor).
LRA -
Locked Rotor Amps
MKW -
Maximum Unit Input Power
MTA -
Must Trip Amps
WSA -
Wire Sizing Amps per NEC, Section 430-24
* Suitable for use on electrical systems where voltage supplied to unit
terminals is not
below or above the following limits:
Max 264 volts, min 198 volts for 230 – volt units.
Max 457 volts. Min 342 volts for 400 – volt units.
† Compressor numbered from left to right when viewed from front of unit.
Each compressor has electric unloaded on one cylinder bank (2 cylinders).
NOTES:
1. Compressor speed-1450 rpm.
2. Crankcase heater-180 watts, 240 volts.
3. Maximum allowable phase unbalance: volts, 2%; amps, 10%
4. Maximum incoming wire size: 350 MCM for 230-volt units;
no. 0000 AWG for 400-volt units.