FORM 195.26-NM3
YORK INTERNATIONAL
61
9
5. The compressor oil level must be maintained
in the 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 submerged in oil to avoid the entrance
of air, operate the pump until oil drips from the
flare nut joint, allowing the air to be expelled,
and tighten the flare nut. Open the compres-
sor oil charging valve and pump in oil until the
oil reaches the proper level as described above.
Close the compressor oil charging valve.
9
6. Assure all valves in remote piping are open.
9
7. Check panel to see that it is free of foreign
material (wires, metal chips, etc.).
9
8. Visually inspect wiring (power & control). Must
meet NEC and all local codes. (See Fig. 10.)
9
9. Check for proper size fuses in main and con-
trol power circuits.
9
10. Verify that field wiring matches the 3-phase
power requirements of the compressor. See
nameplate. (See Fig. 1, page 4.)
9
11. Assure 115VAC Control Power to TB1 has 30A
minimum capacity. (See Fig. 10.)
9
12. Be certain all 2 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”)
9
1. Apply 3-phase power and verify its value.
(See Fig. 10.)
Record the voltage:
∅
A __________ VAC
∅
B __________ VAC
∅
C __________ VAC
9
2. Apply 115VAC and verify its value on the ter-
minal block in the lower left of the Power Panel.
Make the measurement between terminals 5
and 2. Should be 115VAC
±
10%.
(See Fig. 10.)
Record the voltage: __________ VAC
SYSTEM START-UP CHECKLIST
CHECKING THE SYSTEM 24 HOURS PRIOR TO INI-
TIAL START-UP (NO POWER)
Unit Checks
9
1. Inspect the unit for shipping or installation
damage.
9
2. Assure that all piping has been completed.
9
3. Check that the unit is properly charged and
that there are no piping leaks.
9
4. Suction and discharge stop valves and the
refrigerant 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 lu-
brication circuit.
JOB NAME:
LOCATION:
SOLD BY:
INSTALLING
CONTRACTOR:
START-UP:
TECHNICIAN/
COMPANY:
DATE:
CHILLER
MODEL #:
SERIAL #:
COMPRESSOR #1
MODEL #:
SERIAL #:
COMPRESSOR #2
MODEL #:
SERIAL #:
