2
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
INDOOR UNIT SERVICE MANUAL
2
SAFETY PRECAUTION
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R32
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off
the power-supply beaker.
• Discharge the condenser before the work involving the
electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts
with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be
done without turning off the power, exercise great caution
not to touch the live parts.
Use new refrigerant pipes.
In case of using the existing pipes for R22, be careful with
the following.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
1
REFERENCE MANUAL
Model Name
Service Ref.
Service
Manual No.
PLA-ZM35/50/60/71EA
PLA-ZM35/50/60/71EA.UK
OCH650
OCB650
PKA-M60/71KA
PKA-M60/71KAL
PKA-M60/71KA.TH
PKA-M60/71KAL.TH
OCH661
OCB661
PKA-M35/50HA
PKA-M35/50HAL
PKA-M35/50HA
PKA-M35/50HAL
OCH660
OCB660
PCA-M35/50/60/71KA
PCA-M35/50/60/71KA
OCH659
OCB659
PEAD-M35/50/60/71JA
PEAD-M35/50/60/71JAL
PEAD-M35/50/60/71JA.UK
PEAD-M35/50/60/71JAL.UK
―
MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT
WARNING
This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.
Read the OPERATION MANUAL carefully before operation.
Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.
Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
OCH653
