SAMUEL JACKSON HG-1-1501, Руководство по эксплуатации и обслуживанию

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PAGE 17 of 46 HG-1-1501 GAS-FIRED HEATER
© SAMUEL JACKSON, INCORPORATED 2011 ALL RIGHTS RESERVED
TIPS
THE FOLLOWING MAINTENANCE TIPS WILL HELP TO MINIMIZE FLAME
FAILURE ALARMS:
- Check that the burner head is positioned correctly inside burner body. Refer to TESTS
EXPLANATION in this manual under the PRELIMINARY section for details.
- Clean the spark plug if it appears fouled.
- Scrape off the flame electrode and wipe the ceramic insulator with a clean cloth.
- Increase the gas pressure if low fire setting appears to be extinguished from
air turbulence.
- Increase the gas low fire valve opening a little.
- Check for a grounded ignition circuit.
- Check burner orifice alignment. See BURNER ORIFICE ALIGNMENT page in this
manual.
ERROR 153
FLAME SIGNAL BEFORE FUEL AND SPARK: This ERROR means a flame signal is
observed before spark and fuel are supplied to the burner head. This ERROR is normally
caused by a malfunction or tampering with the Flame Relay (FLR). In some cases, a
loose nut or bolt from overhead piping has fallen into the burner head assembly forming a
short circuit between the flame electrode and the burner head. If the Flame Relay appears
to be good, check for a loose metallic object in the burner head assembly. Also check for
carbon build-up in the burner head causing a short to the flame rod.
ERROR 155
FLAME SIGNAL BEFORE FUEL DURING SPARK : This ERROR is caused by electrical
interference between the spark plug wire and the flame electrode wire. Run these wires in
separate conduits. As the spark plug wire carries in excess of 6000 volts, make sure that it
is routed along the BOTTOM of the control cabinet. A spark plug wire routed incorrectly
in the control cabinet can interfere with the operation of the PLC and other electronic
components.
ERROR 164
AIR TEMPERATURE THERMOCOUPLE BURNOUT: This ERROR normally means
that the thermocouple mounted in the duct sensing air temperature has burned out or the
thermocouple sensor wire connections are loose. If the air temperature remains at 000 F a
few seconds after the heater lights, this ERROR occurs. The thermocouple wires are
polarity sensitive so reversing the wire hookups could also cause this condition. For type
‘J’ thermocouples, the white wire is positive, red is negative. Reversing the wires will
cause the PLC to think the temperature is falling when it is actually rising. If the
temperature is dropping as the gas valve is opening, this ERROR will occur.
*ERROR 166
SSOV1 FAILED POC SWITCH NOT SATISFIED: The PLC was not able to verify that
Saftey Shut-Off Valve 1 (upstream SSOV valve) is opening and closing in a timely
manner. If this problem persists, try the following: Check that SSOV opens and closes.
Check for gas leaks. Check operation of SSOV's Proof of Closure switch (POC). Replace
SSOV valve actuator and/or its proof of closure switch.