Service Instructions - L.B. White Premier TS040 Manuel Du Propriétaire Et Instructions D'installation

18
Premier Ductable Heater

Service Instructions

WARNING
Burn Hazard
the heater has been shut down.
service, maintenance, or cleaning.
causing injury.
WARNING
Fire and Explosion Hazard
heater components or gas train components
such as gas valves, or gas hoses.
are found.
explosions, causing property damage, injury, or
death.
1. Close the fuel supply valve to the heater and
disconnect the electrical supply before servicing
unless necessary for your service procedure.
the hole, causing combustion or ignition problems.
3. The high limit switch can be tested by:
-- Disconnecting the leads at the component, and
jumpering the leads together.:
-- Reconnect the electrical supply and open fuel
supply valves.
-- If the heater lights, the component is defective
and must be replaced.
-- Do not leave the jumper on or operate the heater
if the part is defective. Replace the part immedi-
ately.
-- An alternate method for checking components is
to perform a continuity check.
4. The air pressure switch must not be jumpered.
If jumpered, the ignition control will not allow the
heater to operate. Test the air pressure switch for
continuity. If defective, replace the switch.
Owner's Manual • Premier Ductable Heater
5. Open the front case panel for access to the heat-
ers interior components.
6. Disconnect the appropriate electrical leads when
replacing components.
7. For reassembly, reverse the respective service
procedure. Ensure gas connections are tightened
securely and leak checked.
8. After servicing, start the heater to ensure proper
operation.
Motor & Fan Assembly
base; 4 each on both long sides of the heater. Spread
the bottom sides outward and lift up to clear the
internal components.
end of heater.
1. Disconnect the motor leads.
2. Remove the screws securing the motor mounting plate
to the housing.
3. Pull the motor and fan assembly from the housing.
4. Loosen set screws on the fan wheel and pull the fan
wheel from the motor shaft.
5. Remove the four nuts securing the motor to the mount-
ing plate.
6. See Fig. 16 for fan wheel spacing.