York MILLENNIUM YCAS 250, Руководство пользователя

Страница: 132 / 196

132
YORK INTERNATIONAL
SYSTEM STARTUP CHECKLIST
not, above the bottom of the lower sight glass
and below the top of the upper sight glass.
In actual operation, due to splashing,
an oil levelmay be seen in both sight
glasses. Run the compressor for a few
minutes, shut the system down, and as-
sure there is an oil level showing in
the bottom or top sight glass with the
compressor off.
If it is necessary to add oil, connect a YORK oil
pump to the charging valve on the oil separator,
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
kthe proper level as described above.
q
6. Assure water pumps are on. Check and adjust
water pump flow rate and pressure drop across
the cooler.
Excessive flow may cause catastrophic
damage to the evaporator.
q
7. Check the control panel to assure it is free of
foreign material (wires, metal chips, etc.).
q
8. Visually inspect wiring (power and control).
Wiring MUST meet N.E.C. and local codes. See
Fig. 8, page 35 and 36.
q
9. Check tightness of power wiring inside the
power 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 (Pages 25 - 26).
q
12.Assure 115VAC Control Power has 30A mini-
mum capacity. See Fig. 12, page 40.
q
13.Be certain all water temp sensors are inserted
completely in their respective wells and are
coated with heat conductive compound.
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 #: ________________________________
Unit Checks
Check the system 24 hours prior to initial start
(No Power)
q
1. Inspect the unit for shipping or installation
damage.
q
2. Assure that all piping has been completed.
q
3. Check that the unit is properly charged and that
there are no piping leaks.
q
4. Open each compressor suction service valve,
discharge service valve, economizer service
valve, liquid line stop valve, and oil line ball
valves.
q
5. The compressor oil level should be maintained
so that an oil level is visible in either of the two
oil separator sight glasses. In other words, oil
level should always be maintained, running or
Technical Data