Manual Part No: 931762-01
MV1 Gas Steamer
- 19 –
Manual Rev No: 2
Service and Maintenance (cont.)
Fault Finding
Fault Possible
Cause
Remedy
Fault in wires, thermocouple to
control valve
Check and remake connections
Faulty thermocouple
Replace
Pilot flame incorrect
Turn up flame if required, clean and
adjust as required.
Pilot will not
establish
Thermocouple incorrectly positioned Re-position
as
required
Pilot bracket bent and pilot too low
Check and correct
Pilot blocked or adjustment too low
Clean/re-adjust
Explosive Ignition
Gas pressure low
Set to correct pressure
No water supply to steamer
Check supply
Float switch in header tank damaged
or scale build up impairing operation
of float mechanism.
Replace or de-scale as required.
Thermostat faulty
Replace
Poor or open connections
Repair or remake connections
Thermopile failure
Should generate 350-mv open
circuit.
Should generate 100-mv closed
circuit.
Replace if required
Actuating solenoid valve failure
Replace multifunctional control valve
Pilot flame incorrect
Turn up if too low, clean and adjust
as required.
Pilot establishes
but main burners
will not light
Thermopile incorrectly positioned Re-position
as
required
