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At shutdown, oil level should be halfway in the lower sight glass.
4. The oil pressure should be between 18 and 30 psi (124 to 207 kPa) differential, as seen on
the LID default screen. Typically the reading will be 18 to 25 psi (124 to 172 kPa) at initial
start-up.
5. The moisture indicating sight glass on the refrigerant motor cooling line should indicate
refrigerant flow and a dry condition.
6. The condenser pressure and temperature varies with the machine design conditions.
Typically the pressure will range between 100 and 210 psig (690 to 1450 kPa) with a
corresponding temperature range of 60 to 105 F (15 to 41 C). The condenser entering
water temperature should be controlled below the specified design entering water
temperature to save on compressor kilowatt requirements. The leaving condenser water
temperature should be at least 20° F (11° C) above leaving chilled water temperature.
7. Cooler pressure and temperature also will vary with the design conditions. Typical pressure
range will be between 60 and 80 psig (410 and 550 kPa), with temperature ranging
between 34 and 45 F (1 and 8 C).
8. The compressor may operate at full capacity for a short time after the pulldown ramping has
ended, even though the building load is small. The active electrical demand setting can be
overridden to limit the compressor IkW, or the pulldown rate can be decreased to avoid a
high demand charge for the short period of high demand operation. Pulldown rate can be