13
Air Output, Air Intake,
and Lint Filters
1. Remove upper shell (see
page 10).
2. Remove filter end cover
screws using 5/16" nut-
driver.
3. Remove filter end cover.
4. Replace air output and lint
filters.
5. Wash or replace air intake
filter (see Preventative
Maintenance Schedule,
page 8).
6. Replace filter end cover.
7. Replace fan guard and
upper shell.
IMPORTANT:
Do not oil
filters.
Pump Pressure
Adjustment
1. Remove pressure gauge
plug from filter end cover.
2. Install accessory pressure
gauge (part number
HA1180).
3. Start heater (see Operation,
page 7). Allow motor to
reach full speed.
4. Adjust pressure. Turn relief
valve to right to increase
pressure. Turn relief valve
to left to decrease pressure.
See specifications at right
for correct pressure for
each model.
5. Remove pressure gauge.
Replace pressure gauge
plug in filter end cover.
Lint Filter
Air Output
Filter
Air Intake Filter
Filter End
Cover
Fan Guard
(100,000 BTU/Hr
Model Shown)
Figure 11 - Air Output, Air Intake, and Lint Filters
Relief
Valve
Pressure Gauge Plug
Pressure
Gauge
Figure 13 - Adjusting Pump Pressure
Figure 12 - Pressure Gauge Plug Removal
Pump
Model
Pressure
100,000 BTU/Hr
4.0 PSI
150,000 BTU/Hr
5.0 PSI
(150,000 BTU/Hr Model Shown)
