Daikin Screw Chiller AWV020

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

CAUTION: Avoid prolonged exposure of refrigerant to the atmosphere

Select the type of POE oil used

Compressor oil heater is functioning properly?

Sign off on the lubrication procedure

Warning: This inspection requires trained personnel with PPE!

If the sight glass is not clear, it may indicate inadequate refrigerant charge.

Is there bubbling refrigerant in the sight glass during stable run conditions?

Bubbling refrigerant may indicate an EXV problem or excessive pressure drop.

Indicate the color of the element inside the sight glass

If the sight glass does not indicate a dry condition after about 12 hours of operation, an oil acid test is recommended.

Is the sight glass on the EXV body clear?

Do not use the sight glass on the EXV body for refrigerant charging. Its purpose is to view the position of the valve.

WARNING: 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: - Oil Filter – 250mm - Oil Filter Housing Cover - O-Ring – 89.5x3 - O-Ring – 76.1x3.4 - (6) M8 Bolts

Before reassembly, remove any paint from joint faces. Inspect parts individually for damage and ensure they are completely clean before laying them out on a clean surface in a logical order ready for reassembly.

Use fresh refrigerant oil to lubricate parts during reassembly.

Install new O-rings on the oil filter housing cover.

Insert new oil filter into the housing, ensuring the filter sits tightly on the sealing spigot.

Replace the oil filter housing cover.

Evacuate air and non-condensibles before valving refrigerant back into the compressor.

Sign off on the oil filter assembly

Enter the Discharge Temperature

Enter the Saturated Oil Temperature

Oil sump check is set to Ready when: Discharge Temperature > Saturated Oil Temperature + 5°C

Oil sump check is set to Not Ready when: Discharge Temperature < Saturated Oil Temperature + 4.5°C

DANGER: Electric equipment can cause electric shock which will cause severe personal injury or death. Turn off, lock out and tag all power before continuing with following service. Panels can have more than one power source.

CAUTION: Periodically check electrical terminals for tightness and tighten as required. Always use a backup wrench when tightening electrical terminals.

Power turned off, locked out and tagged?

Backup wrench used when tightening electrical terminals?

Sign off on the electrical terminals check