York YCAS0130 manual System Startup Checklist

FORM 201.19-NM1 (204)

SYSTEM STARTUP CHECKLIST

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 #: ________________________________

UNIT CHECKS (NO POWER)

Check the system 24 hours prior to initial start.

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.Open each compressor suction service valve, discharge service valve, economizer service valve, liquid line stop valve, and oil line ball valves.

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 not, above the bottom of the lower sight glass and below the top of the upper sight glass.

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 oil charging valve on the oil separator and pump in oil until it reaches the proper level as described above.

In actual operation, due to splashing, an oil level may be seen in both sight glasses. Run the compressor for a few minutes fully loaded, shut the system down, and assure there is an oil level showing in the bottom or top sight glass with the compressor off.

6.Assure water pumps are on. Check and adjust water pump flow rate and pressure drop across the evaporator.

Excessive flow may cause catastrophic damage to the evaporator.

7.Check the control panel to assure it is free of foreign material (wires, metal chips, etc.).

8.Visually inspect wiring (power and control). Wiring MUST meet N.E.C. and local codes. See Fig. 9 and 10, pages 36 and 37.

9.Check tightness of power wiring inside the power panel on both sides of the motor contactors and inside the motor terminal boxes.

10.Check for proper size fuses in main and control circuits.

11.Verify that field wiring matches the 3-phase power requirements of the compressor. See chiller nameplate (Pages 25 - 26).

12.Assure 115VAC Control Power has 30A min- imum capacity. See Fig. 14, page 41.

13.Be certain all water temp sensors are inserted completely in their respective wells and are coated with heat conductive compound.

14.Assure that evaporator EEV bulbs are strapped onto the suction lines at 4 or 8 o’clock posi- tions.

15.Assure that the 15 ton economizer TXV bulbs are strapped onto the compressor economizer supply lines at 4 or 8 o’clock positions.

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YORK INTERNATIONAL 117