Desa 26, 44 kW (150, 8 (30, 20 Air Output, Air Intake, and Lint Filters, Pump Pressure Adjustment

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.

14

Air Intake Filter

Filter End

Cover

Fan Guard

Lint Filter

Air Output

Filter

Figure 20 - Air Output, Air Intake, and Lint Filters,

8,8/20,5 kW (30/70,000 Btu/Hr) Models

	Fan Guard
Air Intake Filter	(26,4 kW [90,000
Filter End	Btu/Hr] Model
	Shown)
Cover

Lint Filter

Air Output

Filter

Figure 21 - Air Output, Air Intake, and Lint Filters,

26,4/44 kW (90/150,000 Btu/Hr) Models

(8,8/20,5 kW [30/70,000 Btu/Hr] Models Shown)

Pressure	Relief
Gauge	Valve
Plug

Figure 22 - Pressure Gauge Plug Removal

Pressure

Gauge

	Figure 23 - Adjusting Pump Pressure
Model	Pump Pressure
8,8 kW (30,000 Btu/Hr)	17,93 kPa (2.6 PSI)
20,5 kW (70,000 Btu/Hr)	26,20 kPa (3.8 PSI)
26,4 kW (90,000 Btu/Hr)	30,34 kPa (4.4 PSI)
44 kW (150,000 Btu/Hr)	33,78 kPa (4.9 PSI)

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