Roberts Gorden POP-ECA/PGP-ECA 015 to 0100 Troubleshooting for Flame Supervision System

COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL

14.4 Troubleshooting for Flame Supervision System

The flame supervision system is different for gas-fired and oil-fired heaters but may be tested in a similar way.

Gas-fired heaters use a rectification flame probe to monitor the flame. Oil-fired heaters use a photo sensitive cell to monitor the flame.

To connect a suitable meter into the circuit to monitor the flame signal current, disconnect one of the wires to the monitor (there is only one for gas-fired).

Connect a suitable DC ammeter between the terminal just disconnected and the wire taken from it. Should the meter read backwards, then reverse its connections.

Readings should be approximately as follows(For further details see burner manufacturer’s instructions):

Oil-Fired		Gas-Fired
Maximum flame	Minimum flame	Maximum flame	Minimum flame
current with no	current with	current with no	current with
flame	flame	flame	flame
12 μ Amp	25 μ Amp	0.5 μ Amp	1.0 μ Amp

START

Connect a DC ammeter in

series with the flame monitor.

Turn on all controls and ensure supply to burner

		OIL-FIRED
		Is there a stray light entering
Is there a current flowing		the burner or is there a
	Yes	flame?	Repair or replace.
in excess of the max.
		GAS-FIRED
value for NO flame?
		Inspect and test the flame
		probe and wiring for a short
		circuit to earth.
No		OIL-FIRED
Does 'lockout' occur when		Clean or replace photo
a flame is present?	Yes	electric cell as necessary.
		GAS-FIRED
		Replace flame probe.
		Check for it's correct position.
		Check wiring to flame probe.
		Check burner earth
		connection.
No
'Lockout' still occurs?	Yes	Control box faulty.
		Replace with correct type.

No		If problems persist, contact
Heater Operating
	No	ROBERTS GORDON® at
TROUBLESHOOT ENDS.		Tel: +44 (0)121 506 7709
		www.rg-inc.com

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