FORM 150.24-NM27
YORK INTERNATIONAL
87
SYSTEM START-UP CHECKLIST
Unit Checks
*
1. Inspect the unit for shipping or installation dam-
age.
*
2. Assure that all piping has been completed.
*
3. Check that the unit is properly charged and that
there are no piping leaks.
*
4. Suction and discharge stop valves and the re-
frigerant liquid stop valves are open (ccw).
CAUTION: Compressor lubrication circuit must be
primed with YORK C oil prior to start-up.
Priming should be done through the
Schrader fitting at the compressor oil pump.
Stroke oil pump 10 times to prime the lubri-
cation circuit.
*
5. The compressor oil level must be maintained
between the middle of the upper and middle of
the lower sight glass at all operating conditions.
At part load operating conditions, it is not ab-
normal for the oil level to be in the lower sight
glass. If it is necessary to add oil, connect a
YORK oil pump to the oil charging valve, but do
not tighten the flare nut on the delivery tubing.
With the bottom (suction end) of the pump sub-
merged in oil to avoid the entrance of air, oper-
ate the pump until oil drips from the flare nut
joint, allowing the air to be expelled, and tighten
the flare nut. Open the compressor oil charging
valve and pump in oil until the oil reaches the
proper level as describe above. Close the com-
pressor oil charging valve.
*
6. Assure water pumps are on. Check and adjust
water pump flow rate and pressure drop across
cooler.
*
7. Check panel to see that it is free of foreign ma-
terial (wires, metal chips, etc.).
*
8. Visually inspect wiring (power & control). Must
meet NEC and all local codes. (See Fig. 12-14)
*
9. Check for proper size fuses in main and control
power circuits.
*
10. Verify that field wiring matches the 3-phase
power requirements of the compressor. See
nameplate. (See Fig. 12)
*
11. Assure 115VAC Control Power to TB1 has 30A
minimum capacity. (See Fig. 12)
*
12. Be certain all control bulbs are inserted com-
pletely in their respective wells and are coated
with heat conductive compound.
PANEL CHECKS
(POWER ON-BOTH SYSTEM SWITCHES OFF)
*
1. Apply 3-phase power and verify its value. (See
Fig. 12). Record the voltage:
φ
A ______ VAC
φ
B ______ VAC
φ
C ______ VAC
*
2. Apply 115 VAC and verify its value on the termi-
nal block in the lower left of the Power Panel.
Make the measurement between terminals 5 and
2. Should be 115 VAC ± 10%. (See Fig. 12).
_____ VAC
*
3. Assure crankcase heaters are on. Allow crank-
case heaters to remain on a minimum of 24
hours before start-up. This is important to as-
JOB NAME: ______________________________
SALES
ORDER #: _______________________________
LOCATION: ______________________________
SOLD BY: _______________________________
INSTALLING _____________________________
CONTRACTOR: ___________________________
START-UP: ______________________________
TECHNICIAN/
COMPANY: ______________________________
DATE: __________________________________
CHILLER
MODEL #: _____________________________
SERIAL #: _____________________________
COMPRESSOR #1
MODEL #: _____________________________
SERIAL #: _____________________________
COMPRESSOR #2
MODEL #: _____________________________
SERIAL #: _____________________________
CHECKING THE SYSTEM 24 HOURS PRIOR TO INI-
TIAL START-UP (NO POWER)
Summary of Contents for YCWJ45EE0
Page 29: ...FORM 150 24 NM27 YORK INTERNATIONAL 29 CONTROL CIRCUIT With I O Expansion Board LD02106...
Page 30: ...30 YORK INTERNATIONAL FIG 9 SYSTEM WIRING...
Page 31: ...FORM 150 24 NM27 YORK INTERNATIONAL 31 LD02678...
Page 35: ...FORM 150 24 NM27 YORK INTERNATIONAL 35 LD02679...
Page 36: ...36 YORK INTERNATIONAL MICROPANEL CONNECTION DIAGRAM With I O Expansion Board LD02107...
Page 37: ...FORM 150 24 NM27 YORK INTERNATIONAL 37 LD02108...