Daikin Screw Chiller AWV016

Warning: Handle POE oil carefully using proper protective equipment (gloves, eye protection, etc.).

CAUTION: Avoid prolonged exposure of refrigerant to the atmosphere to prevent moisture absorption.

Select the type of POE oil used

Compressor oil heater is on when the compressor is off and off when the compressor is on?

Sign off on the screw chiller lubrication

Complete unit log and review. Log readings can be taken daily for a higher level of unit observation.

Electrical ( * including the VFDs)

Clean control box fan filter. The weekly fan filter cleaning schedule can be modified to meet job conditions. It is important that the filter allows full air flow.

Check liquid line sight glasses for clear flow

Check compressor oil sight glass for correct level (lubricant charge);

Prior to this procedure, pump out the compressor. Isolate the electrical supply to the control panels and compressor motor terminal. Filter should be changed when pressure drop delta goes above the linear line in Figure 74.

After the compressor has been pumped down and isolated, the oil contained inside the filter housing will remain hot enough to cause burns for some time afterwards. Always allow sufficient time for the oil to cool down so that it is cool enough not to be a danger when drained off (less than 35°C is recommended). Severe injury from burns can result.

Oil filter assembly components are:

Inspect the chiller to ensure no components became loose or damaged during shipping or installation, including leak test and wiring check.

Discharge shutoff valve and the optional compressor suction butterfly valves are open?

Manual liquid line shutoff valves at the outlet of the subcooler coils are open?

Leaving chilled water temperature set point on the MicroTech® III controller

Auxiliary equipment for the installation started by turning on the time clock, and/or remote on/off switch, and chilled water pump?

Pumpdown switches Q1 and Q2 are in the “Pumpdown and Stop” (open) position?

S1 switch is in the “Auto” position?

Under the “Control Mode” menu of the keypad, is the unit in the automatic Cool Mode?

System started by moving pumpdown switch Q1 to the “Auto” position?

Prior to this procedure, pump out the compressor. Isolate the electrical supply to the control panels and compressor motor terminal. Filter should be changed when pressure drop delta goes above the linear line in Figure 74.

After the compressor has been pumped down and isolated, the oil contained inside the filter housing will remain hot enough to cause burns for some time afterwards. Always allow sufficient time for the oil to cool down so that it is cool enough not to be a danger when drained off (less than 35°C is recommended). Severe injury from burns can result.

Oil filter assembly components are: