Initial Check; Check Of Power Supply And Connection - Hitachi RCUE40AG2 Service Manual

Air cooled water chillers, cooling only and heat pump, cooling capacity 106/112 kw - 585/556/1030 kw

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Troubleshooting

5.1. Initial check

5.1.1. Check of power supply and connection

In case of abnormality in Chiller unit, check the following items ﬁ rstly.

Nº

Check Item

Is power supply or fuse broken?

Does secondary power of

transformer supply correctly?

Wiring loose?

Wrong wiring?

pag. 84

SMGB0003 rev.0 - 01/2007

Check Method

Measure secondary voltage of breaker and current carrying of fuse by tester.

Pull out the connection of secondary side in Transformer and measure the

voltage by tester. Conﬁ rm if the voltage corresponds to the indication in

Transformer.

White

Red

White

Red

Conﬁ rm if wiring is not loose nor wiring is wrong referring to the electricity

circuit.

Insertion of connector of Thermistor or Compressor Sensor

−

Insertion of connector of Flat Cable

−

Insertion of connector of Transformer Connector

−

Insertion of each connector in 200V circuit.

−

Transformer in unit

Red

Blue

Rated

Load

Blue

Orange

Red

Blue

Rated

Load

Blue

Orange

Green

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Initial Check; Check Of Power Supply And Connection - Hitachi RCUE40AG2 Service Manual

5.1. Initial check

5.1.1. Check of power supply and connection

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