Actron Engineering Outdoor Unit CAY620T-6Q2

Ensure all power supply, including remote controls, are disconnected

Wait at least 5 minutes after power isolation before testing for high voltage

Test for high voltage before performing service work

Observe proper Lock-Out / Tag-Out procedures

Visual Inspection and Terminal Tightening

Perform visual inspection of isolators and printed circuit boards

Tighten terminals on isolators and printed circuit boards as necessary

Check all electrical terminals, mains, and communications for looseness

Visual check for damage, rust and dust accumulation

For highly corrosive environment, wash panels quarterly with water & neutral detergent solution

Repair / re-paint where required

Visual check for insulation conditions

Repair / replace insulation material

Ensure all power supply to the Outdoor Fans is turned off and isolated.

Avoid wearing loose clothing and jewelry near the fans.

Ensure electrical components do not get wet during cleaning.

Remove the louvered panels to access the air inlet side of the coils.

Open evaporator access door and remove access panel to the condenser section.

Visual check for fan run out of balance and dust attachment

Check heat exchanger for clogging by dust

Check heat exchanger for leaks or damage

Clean air inlet side of heat exchanger

Straighten any bent fins using fins comb

Measure insulation resistance to earth with Megger

Is the insulation resistance more than 1MΩ?