Emerson ZB Copeland Scroll Service Manual download pdf (Page 13)

ZB Series

Application guide

First-Time installation:

The suction pipe for scroll compressor is a copper-plated steel pipe and its welding technology is similar to that for other copper pipes.

Recommended solder: Any copper-silver alloy material is suitable, but the alloy should preferably contain at least 5% silver.

Before installation, make sure that both the internal surface of the suction pipe nozzle and the external surface of the suction pipe are clean.

Heat up the area 1 by means of a two-tip welding gun. After the pipe temperature approaches welding temperature, the flame of the

welding gun is moved over to the area 2.

Heat up area 2 to welding temperature. To make the pipe temperature uniform, the welding gun should be moved up and down, and if

necessary, the welding gun can be rotated around the pipe. The solder is added to the connector and at the same time the welding gun is

rotated around the connector to make the solder flow along its periphery.

After the solder flows around the connector, the welding gun should be moved to area 3 in order to heat up, so that the solder can be drawn

in the connector.

Excessive heat will create poor welding connections.

Field service

Disconnect: Reclaim the refrigerant from the high-pressure and low-pressure side of the system simultaneously.

Connect again

Recommended welding material: A solder that contains 5% silver at least, or a copper-silver alloy with a soldering flux.

Insert a pipe in the connector and connect with the system.

Operate according to the First-Time installation guide.

Control of oil level when running parallel

The Copeland refrigeration scroll compressor is suitable for running in parallel. An adequate oil level in the compressor must be ensured in the

process. When the oil level is below the setting one, the oil level controller allows the compressor to continue running for a period of time.

Thereafter, if the oil level is still not adequate, the compressor stops running.

Caution: The following models are not certified by Copeland for parallel connection: ZB50, ZB58, ZB66, ZB76 and ZB88.

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Welding of the pipeline for the scroll compressor

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Emerson ZB Copeland Scroll Service Manual Page 13