Troubleshooting - Procom Heating MG10TBF Manual De Operación

MAINTENANCE OF BLOWER MOTOR (IF EQUIPPED)
Always disconnect the appliance from the
main power supply and allow it to cool
before any servicing operation.
The motors used on the fan heater and flame
blower are pre-lubricated for extended bear-
ing life and require no further lubrication.
However, periodic cleaning/vacuuming of the
appliance around the air intake and exhaust,
as well as the fan heater is recommended. For
WARNING: If you smell gas:
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your
building.
• Immediately call your gas supplier from a neighbor's phone. Fol-
low the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
WARNING: Only a qualified service technician should service and
repair heater. Make sure that power is turned off before proceeding.
Turn off and let cool before servicing.
CAUTION: Never use a wire, needle, or similar object to clean
ODS/pilot. This can damage ODS/ pilot unit.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning sup-
plies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc.,
create fumes. These fumes may mix with combustion air and create odors.
Note: All troubleshooting items are listed in order of operation.
Problem
Using natural gas and
pilot will not light.
Pressure Switch
When using natural gas (NG), there is a pres-
sure switch that acts to turn off the gas flow
to the pilot if the inlet pressure exceeds 9.5"
WC. This is to prevent the operation of the
unit on the wrong gas (propane/LP). If your
natural gas supply exceeds 9.5" WC the unit
will not operate. Either contact your gas sup-
plier to check and adjust the inlet pressure or
a qualified service technician can bypass the
pressure switch.
200300-01A
CARE AND MAINTENANCE

TROUBLESHOOTING

Possible Cause
Inlet pressure exceeds 9.5" WC. Bypass pressure switch. See
www.usaprocom.com
heavy or continuous use, periodic cleaning
must be done more frequently. If the heater
blows alternating cold and warm air, check the
fan for free movement and for debris restrict-
ing air flow. If the fan does not move freely, the
unit must be turned off and the fan replaced
immediately in order to prevent further dam-
age to the unit.
Corrective Action
instructions below.
Before attempting to bypass the pressure
switch, make sure the type of gas being used
is correct. Check to make sure the connection
fitting is in the correct inlet on the regulator.
Refer to Connecting to Gas Supply, page 15.
Only a qualified installer should bypass the
pressure switch. To bypass the pressure
switch locate the set screw on the regulator.
Use a small flat bladed screw driver to turn the
set screw counterclockwise 2 turns. This will
bypass the pressure switch function.
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