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

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

FLA

LRA

MTA FLA

LRA MTA

150

17.4 49 191 69 29 110 41

250

20.0 57 250 80 33 144 46

275

26.8 76 255 106 43 205 60

250

20.0 57 250 80 33 144 46

275

30.9 86 355 120 52 205 73

Table 4-COMPRESSOR 06E USAGE†

Circuit and Compressor Numbers

UNIT

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.

1 2 3 4 5 6 7 8 9 10 11 12

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