Sanyo KGS1411, CG1411 service manual Special Precautions When Servicing The Unit, Procedure

13. SPECIAL PRECAUTIONS WHEN SERVICING THE UNIT

Important!

For your personal safety, be sure to read and understand the following precautions before servicing.

Injuries can occur from burns or inhalation of toxic gas if servicing is per-

WARNING formed while refrigerant remains in the refrigeration circuit. This servicing includes disassembling brazed tubing connections and removing any refrigeration parts or components.

●To avoid risk of injury when servicing the outdoor unit (for instance, when replacing the compressor or repair- ing a refrigerant leak), follow the procedure below for the refrigerant circuits of the outdoor unit.

PROCEDURE

13-1. BLK/WHT Connector Attachment for Servicing

13-1-1.Confirm mains power is switched OFF, then, detach the connectors (BLK and WHT) for the electromag- netic valves, SV1 and SV2, from the terminals CN4 and CN6 on the PCB.

13-1-2.Connect the special connector (field supply) and the connector (BLK and WHT). Following this, re-apply power at 115V and open the electromagnetic valves, SV1 and SV2.

13-1-3.Provide a disconnect switch to the special connector.

13-1-4.Turn the disconnect switch ON to supply power (single-phase, 115V) to the special connector. This makes it possible to force open 2 solenoid valves (SV1 and SV2) in the refrigeration circuit outdoor unit. (Fig. 3)

Important!

The procedures given in “13-2” to “13-5” below must be carried out with the 2 solenoid valves SV1 and SV2 open.

●Condition at shipping and operation

Black

White

V2

CN4 CN6

Outdoor PCB

V1

●Condition at servicing

Power supply

AC115V

Connectors for servicing Disconnect switch (Field supply)

Special connector

Black

White

		V2
CN4	CN6	V1

Outdoor PCB

Fig. 1

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