Daikin Screw Chiller AWV014

Annual (or spring startup) operations include all weekly and monthly operations.

- Inspect thermal insulation for integrity

Electrical ( * including the VFDs):

- Check contactors for pitting, replace as required

- Check terminals for tightness, tighten as necessary

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?

Checked electrical terminals for tightness?

Used a backup wrench when tightening electrical terminals?

Sign off on the electrical terminals check

Warning: This inspection requires trained personnel with PPE!

Is the refrigerant sight glass clear?

If the sight glass is not clear, there might be inadequate refrigerant charge in the system.

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

Bubbling refrigerant may indicate an EXV problem or excessive pressure drop in the liquid line.

Is the sight glass indicating a dry condition after about 12 hours of operation?

If the sight glass does not indicate a dry condition, an oil acid test is recommended.

Sign off on the sight glass inspection

- Water strainer installed on evaporator, 0.125” (3.2mm) or smaller perforations

- Water System filled, flushed and vented

- Pumps installed and operational (rotation checked, strainers cleaned)

- Controls operational (3-way valves, face/bypass dampers, bypass valves, etc.)

- Water system operated and tested; flow meets unit design requirements

- Flow switch installed and wired

Oil sump check is to make sure that oil in the sump is of sufficient quality prior to starting the compressor.

Enter the Discharge Temperature

Enter the Saturated Oil Temperature

Discharge Temperature > Saturated Oil Temperature + 5°C

Discharge Temperature < Saturated Oil Temperature + 4.5°C