Service Instructions General; Burner Nozzle - L.B. White CP300CKI Owner's Manual And Instructions

Service Instructions
GENERAL
■
Heater surfaces are hot for a period of time after the
heater has been shut down.
■
Allow the heater to cool before performing service,
maintenance, or cleaning.
■
Failure to follow this warning will result in burns
causing injury.
Fire and Explosion Hazard
■
Do not disassemble or attempt to repair any heater
components.
■
All component parts must be replaced if defects are
found.
■
Failure to follow this warning will result in fire, causing
property damage, injury, or death.
1. Disconnect the electrical supply before servicing
unless necessary for your service procedure.
2. Clean the heater's nozzle with compressed air or a
soft, dry rag. Do not use files, drills, broaches, etc. to
clean the nozzle hole. Doing so will enlarge the hole,
causing combustion or ignition problems. Replace the
nozzle if it cannot be cleaned properly.

BURNER NOZZLE

-- If cleaning out nozzle, remove the fuel line from
the nozzle inlet as shown in Fig. 7. Blow out with
air.
-- If removing nozzle from burner, proceed as follows.
1. Disconnect the fuel line, ignition cables, and photo cell
from burner head. Loosen the three nuts at burner head.
and remove head from heat chamber. See Fig.7.
FIG. 7
NUT
PHOTO
CELL
13
WARNING
Burn Hazard
WARNING
FIG. 8
IGNITION
CABLES
FUEL LINE
3. The high limit, thermostat, and air pressure 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 par t is defective.
immediately.
-- An alternate method for checking the components
is to perform a continuity check.
5. All serviceable components such as the burner, high
limit, switch,pump, motor, fan, and photocell are
accessed by removing the upper shell at the fan end
of the heater. Electrical components,such as ignition
module,on/off switch, relay, and ignition transformer,
are accessed by opening the control box on the heater.
6. Disconnect the electrical leads for the respective
component.
7. For reassembly, reverse the respective service
procedure. Ensure fuel connections are tightened
securely.
8. After servicing, start the heater to ensure proper
operation.
2. Remove the nut as shown in Fig.8.
3. Remove nozzle with manifold and turbo disc from
head.See Fig.9.
4. Loosen screw securing turbo disc to manifold. See Fig.9.
5. Remove the nozzle from the manifold.
NUT
Replace the par t
FIG. 9
TURBO DISC
NOZZLE