Maintenance Instructions; General Service Instructions - L.B. White Oval 90 v.2 Owner's Manual And Instructions

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Oval Radiant Tube Heaters

Maintenance Instructions

Before Each Use:
1. Check to make sure the heater's surrounding area
is kept clear and free from combustible materials,
gasoline, and other flammable vapors and liquids.
2. Regulators must be periodically inspected to make
sure the regulator vents are not blocked. Debris,
insects, insect nests, snow, or ice on a regulator
can block vents and cause excess pressure at the
appliance.
3. Check all hose and tubing assemblies for cracks,
cuts, abrasions or ruptures. Replace any hoses that
are suspect.
4. Check all gasketing on burner box and fan housing
discharge. Ensure all is in good condition. Replace
any gasket material if suspect
5. Ensure reflector supports and hangers are secure,
reflectors do not sag, and are properly located.
6. Check overall condition of heater for cracked or
damaged components, loose screws or bolts,nicked
or cut electrical leads, etc. Replace any suspect
components.
7. For safety as well as for optimum performance at
the heater, it is necessary to keep the outside of the
heater free of dust, dirt or any combustible material.
If any operational component shows signs of rust or
corrosion, replace the component immediately.
8. Check all warning or instruction labels, dataplates,
etc. If any are lost or become hard to read, replace
them immediately. Do not operate the heater until you
have all instructions and can read and understand
them.
Annually:
1. Check the air inlet assembly. Ensure the air inlet
assembly and its duct are free of blockages.
2. Have your gas supplier check all gas piping for leaks
or restrictions in gas lines. Also, at this time have
your gas supplier clean out the sediment trap at the
inlet of the burner box of any debris that may have
accumulated.
Owner's Manual • Oval Radiant Tube Heaters
3. Regulators can wear out and function improperly.
Have your gas supplier check the date codes
on all regulators installed and check delivery
pressures to the appliance to make sure that the
regulator is suitable for continued use.
General Service
Instructions
WARNING
Burn Hazard
■ 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.
WARNING
Fire and Explosion Hazard
■ Do not disassemble or attempt to repair any
heater components or gas train components.
■ All component parts must be replaced if defects
are found.
■ Failure to follow this warning will result in fire or
explosions, causing property damage, injury, or
death.
1. Close the fuel supply valve to the heater and
disconnect the heater's electrical supply before
servicing unless it is necessary to have the valve
open and electrical supply connected for your
service procedure.
2. Open the burner box for access to control
components. Close and latch after servicing.
3. For reassembly, reverse the respective service
procedure. Ensure gas connections are tightened
securely.
4. Clean the heater's burner orifice and pressure
switch orifices with compressed air or a soft,
dry rag. Do not use files, drills, broaches, etc. to
clean the orifice hole. Doing so will enlarge the
hole, causing ignition or combustion problems.
Replace the orifice if it cannot be cleaned
properly.
5. Disconnect appropriate component electrical
leads when servicing. After servicing, light
the heater to ensure proper operation
and check for gas leaks.