70
YORK INTERNATIONAL
SYSTEM START-UP CHECKLIST
CHECKING THE SYSTEM 24 HOURS PRIOR TO
INITIAL START-UP (NO POWER)
Unit Checks
*
1. Inspect the unit for shipping or installation damage.
*
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 compresor oil level must be maintained in
the sight glass at all operating conditions. If it is
necessary to add oil, connect a YORK oil pump
to the oil chargeing valve, but do not tighten the
flare nut on the delivery tubing. With the bottom
(suction end) of the pump submerged in oil to
avoid the entrance of air, operatire 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
descibed above. Close the compressor oil charg-
ing valve.
*
6. Assure water pumps are on. Check and adjust
water pump flow rate and pressure drop across
cooler. GPM =
*
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 Figs. 9 & 11)
*
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. 9)
*
11. Assure 115VAC Control Power to TB1 has 30A
minimum capacity. (See Fig. 9)
*
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. 9). 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 / 10%. (See Fig. 12).
Record the voltage: 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-
sure no refrigerant is in the oil at start-up!
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 #: _____________________________
