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PERIODIC INSPECTION
18) Refrigerant and Engine Coolant Line Contact Inspection
1. Check the refrigerant line and engine coolant line for contact with other parts.
19) Engine Valve Cleaning
1. Run the outdoor unit.
2. Move a clamp above the gas mixer.
3. Lift the air intake hose a little bit off the gas mixer,
insert the nozzle of a valve cleaner, and supply about
1/2 can of valve cleaner.
NOTE) Supply the valve cleaner intermittently taking
care so that there is no engine stall or over
speed.
4. Pull out the nozzle of the valve cleaner, and connect
the air intake hose.
5. Keep the engine running until no more white smoke
is emitted from the exhaust port. Then stop the
engine.
6. Fix the air intake hose with a clamp.
[Refrigerant line] [Engine coolant line]
Inspection interval Every 3 years (10,000 hours)
Gas mixer
Clamp
Air intake hose
Valve cleaner
Gas mixer
Clamp
Take extra care during engine valve cleaning. There
are possibilities that your fingers or clothing could
be caught by the crank pulley or other rotating parts.
Do not apply the valve cleaner to the hot portion in
cleaning the engine valves. Fire could occur.
Cleaning interval Every 3 years (10,000 hours)
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