York YCAZ33BA3, Руководство пользователя, Страница: 67 / 88

FORM 150.44-NM4
67
YORK INTERNATIONAL
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 #: _______________________________________
SYSTEM START-UP CHECKLIST / REPORT
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 lu-
brication circuit.
¨ 5. The compressor oil level must be maintained in
the sight glass at all operating conditions. At part
load operating conditions, it is not abnormal 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
compressor oil charging valve and pump in oil until
the oil reaches the proper level as described
above. Close the compressor oil charging 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 mate-
rial (wires, metal chips, etc.).
¨ 8. Visually inspect wiring (power & control). Must
meet NEC and all local codes. (See Figs. 9 and
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 each TB1 has
30A minimum capacity. (See Fig. 9)
¨ 12.Be certain all control bulbs are inserted completely
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 at each
pair of compressor contacts. (See Fig. 12)
Record the voltage:
f
A _____________ VAC
f
B _____________ VAC
f
C _____________ VAC
¨ 2. Apply 115VAC and verify its value on the termi-
nal block in the lower left of each Power Panel.
Make the measurement between terminals 5 and
2. Should be 115VAC ±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 assure no
refrigerant is in the oil at start-up!