Section 8 Start-Up; System Startup Checklist - York MILLENNIUM YCAR0315 Installation Operation & Maintenance

System Start-Up
JOB NAME: ______________________________
SALES ORDER #: _________________________
LOCATION: _______________________________
SOLD BY: ________________________________
INSTALLING
CONTRACTOR: ___________________________
START-UP
TECHNICIAN/
COMPANY: _______________________________
START-UP DATE : _________________________
CHILLER MODEL #: _______________________
SERIAL #: ________________________________
COMPRESSOR #1
MODEL#: ________________________________
SERIAL #: ________________________________
COMPRESSOR #2
MODEL#: ________________________________
SERIAL #: ________________________________
COMPRESSOR #3
MODEL#: ________________________________
SERIAL #: ________________________________
COMPRESSOR #4
MODEL#: ________________________________
SERIAL #: ________________________________
CHECKING THE SYSTEM 24 HOURS
PRIOR TO INITIAL START (No Power)
UNIT CHECKS
1. Inspect the unit for shipping or installation
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damage.
2. Assure that all piping has been completed.
q
3. Check that the unit is properly charged and that
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there are no piping leaks.
4. Open each compressor suction service valve, dis-
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charge service valve, economizer service valve,
liquid line stop valve, and oil line ball valves.
5. The compressor oil level should be maintained
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so that an oil level is always visible in one of the
compressor oil sightglasses. In other words, oil
level should always be maintained, running or not,
above the midpoint of the lower sightglass and
below the top of the upper sightglass.
98

SYSTEM STARTUP CHECKLIST

In actual operation, due to splashing,
an oil level may be seen in both
sightglasses. Run the compressor for
a few minutes, shut the system down,
and assure there is an oil level show-
ing above the midpoint of the bottom
sightglass, but not above the top
sightglass with the compressor off.
If it is necessary to add oil, connect a YORK oil
pump to the oil charging valve on the compres-
sor, but do not tighten the flare nut on the delivery
tubing. With the bottom (suction end) of the pump
submerged in oil to avoid 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 it reaches the proper level as
described above. Be sure to use the correct
type of YORK oil for the refrigerant type.
6. Assure water pumps are on. Check and adjust
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water pump flow rate and pressure drop across
the cooler.
Excessive flow may cause catastrophic
damage to the evaporator.
7. Check the control panel to assure it is free of
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foreign material (wires, metal chips, etc.).
8. Visually inspect wiring (power and control). Wir-
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ing MUST meet N.E.C. and local codes. See Fig.
8, page 36.
9. Check tightness of power wiring inside the power
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panel on both sides of the motor contactors and
inside the motor terminal boxes.
q 10. Check for proper size fuses in main and control circuits.
q 11. Verify that field wiring matches the 3-phase power
requirements of the compressor. See chiller
nameplate (Page 25).
q 12. Assure 115VAC Control Power to TB1 has 20A
minimum capacity. See Fig. 8, page 36.
q 13. Be certain all water temp sensors are inserted
completely in their respective wells and are
coated with heat conductive compound. DO NOT
fill wells with water.
q 14. Assure that evaporator TXV bulbs are strapped
onto the suction lines at 4 or 8 o'clock positions.
FORM 150.52-NM2 (1001)
YORK INTERNATIONAL