L.B. White 300 Director - Manual (Page 12)

1. Turn thermostat dial to lowest temperature setting.
This will shut the burner off. The motor will continue
to run for 90 seconds. This allows the fan to cool the
combustion chamber. When the cooling cycle is
finished, the motor will stop.
2. Unplug extension cord from outlet.
3. To temporarily stop heater, set thermostat at a
temperature lower than air around heater. Heater will
cycle back on if air temperature around heater
matches thermostat setting.
Shut-Down Instructions
CAUTION
■
Do not unplug the heater while heater is in operation.
■
The heater must go through cooling cycle. The cooling
cycle allows motor and fan operation after the burner
has shut down. This cools the combustion chamber.
■
Damage to heater can occur if combustion chamber is
not cooled.
■
Do not restart heater until cooling cycle is complete.
Reset of the heater is required if the heater has failed in its
ignition attempt.
RED light is observed at reset button:
-- Position the ON/OFF switch to OFF.
-- Push the reset button
-- Red light goes out.
-- Push the ON/OFF switch to ON position (depending
if thermostat is used)
-- Heater begins ignition trial.
-- Light will turn GREEN once ignition is achieved..
Re-set Instructions
14 11
1. Check all wiring associated terminals and electrical
components within the heater for corrosion, frayed or
cut insulation, tight connections, etc. Repair or
replace as necessary.
2. Review all heater markings (i.e. wiring diagram,
warnings, start-up, shut-down, etc.) at the time of
maintenance for legibility. Make sure none are cut,
torn, or otherwise damaged. Any damaged markings
must be replaced immediately by contacting the L.B.
White Co., Inc. Dataplates, start-up and shut-down
instructions and warnings are available at no cost. A
nominal charge will be applied for wiring diagrams.
3. Inspect all fuel supply lines for cracks, abrasions, or
ruptures. Replace if needed.
4. The heater should be tagged and removed from
service if it shows evidence of damage that is a
safety or health hazard.
5. Refer to the following preventative maintenance
schedule:
Item Maintenance Schedule
Fuel tank Flush every 50 hours of
operation or as needed
Fuel filter assembly Clean twice a heating season
or replace as needed
Fuel filter lines Check and tighten loose
connections before each use
Ignitors Clean and regap every
300 hours of operation or
replace if needed
Fan blades and Clean each season or
air deflectors as needed
Air passages Check each season for dirt
around burner head and debris. Remove debris
with a clean, soft cloth.
Maintenance Instructions