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7 troubleshooting for main fan (3 ø) – Roberts Gorden Combat Cabinet Heaters POP-ECA/PGP-ECA 015 to 0100 User Manual

Page 56

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14.7 Troubleshooting for Main Fan (3 Ø)

Motor running.

TROUBLESHOOT ENDS.

If problems persist, contact

ROBERTS GORDON

®

at

Tel: +44 (0)121 506 7709

www.rg-inc.com

No

Thermal overload in motor

is faulty.

Replace complete fan unit.

(direct drive fans only)

Motor faulty.

Replace complete fan unit.

Contactor or overload faulty.

Replace as necessary.

Check and test wiring to

motor.

Yes

No

Check for 400 V three phase

at input and output of

contactor.

Yes

No

No

Does fan run now?

Motor stops after running

some time.

Reset thermal overload

and check setting. See

page 28, Section 10.1.6.

Check for 230 V at coil

terminals

of fan contactor.

Fan thermostat faulty.

Replace and reset.

Check calibration of the

fan thermostat.

The dial should indicate

the approximate

temperature of the

sampled air.

Yes

No

Check the setting of the

fan thermostat as in

Section 5.1.

Fault lies elsewhere.

Fault lies elsewhere.

Yes

No

Press in white button

of fan/limit thermostat

and retest.

Yes

No

No

Check for 230 V at terminals

1 to N

Yes

No

Yes

START

Main fan will not operate

following warm up

period of heat exchanger.

Check for 400 V three phase

supply at main terminals.

For your safety and optimum heater performance, use only ROBERTS GORDON

®

replacement parts.

Conduct Commissioning procedure as on Page 33, Section 10.