Pump Pressure Adjustment; Nozzle Assembly - Desa Master B 35 CEL Manuel D'utilisation

SERVICE PROCEDURES
8
GB
SERVICE PROCEDURES
Continued
AIR OUTPUT, AIR INTAKE, AND LINT FILTERS
1. Remove upper shell (see page 6).
2. Remove fi lter end cover screws using 5/16" nut-driver.
3. Remove fi lter end cover.
4. Replace air output and lint fi lters.
5. Wash or replace air intake fi lter (see Preventative Maintenance
Schedule, page 5).
6. Replace fi lter end cover.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil fi lters.

PUMP PRESSURE ADJUSTMENT

1. Remove pressure gauge plug from fi lterend cover.
2. Install accessory pressure gauge (part number 4109.427).
3. Start heater (see Operation, page 4).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
specifi cations below for correct pressure for each model.
5. Remove pressure gauge. Replace pressure gauge plug in
fi lter end cover.
E.
D.
Figure 13 – Air output, air intake and lint fi lters, 35.000,
64.000 and 70.000 Btu/Hr.
E.
D.
Figure 14 – Air output, air intake and lint fi lters, 100.000
and 150.000 Btu/Hr.
(see fi gure 13 e 14)
A.Air Intake Filter, B.Filter end cover, C.fan guard
D.Air output fi lter, E.Lint Filter.
A.
B.
C.
A.
B.
C.
A.
C.
Figure 15 – Pressure Gauge Plug removal.
A.
Figure 16 – Adjusting pump pressure
Model Pump pressure (Bar/PSI)
10 kW 0,207 / 3
18,5 KW 0,344 / 5
20 kW 0,344 / 5
29 kW 0,344 / 5
44 kW 0,386 / 5,6

NOZZLE ASSEMBLY

1. Remove upper shell (see page 7).
2. Remove fan (see page 11).
3. Remove fuel and air line hoses from nozzle assembly (see
Figure 17, 18 or 19).
4. Turn nozzle assembly 1/4 turn to left and pull toward motor to
remove (see Figure 20).
5. Place plastic hex-body into vise and lightly tighten.
6. Carefully remove nozzle from the nozzle adapter using 5/8"
socket wrench (see Figure 21).
7. Blow compressed air through face of nozzle. This will free any
dirt in nozzle area.
8. Inspect nozzle seal for damage.
9. Replace nozzle into nozzle adapter until nozzle seats. Tighten
1/3 turn more using 5/8" socket wrench 4.5 to 5.1 N-m (40 to
45 in-lbs). See Figure 21.
10.Attach nozzle assembly to burner strap.
11.Attach fuel and airline hoses to nozzle assembly. See Fuel
and Airline Replacement and Proper Routing see page 9.
12.Replace fan (see page 11).
13.Replace fan guard and upper shell (see page 7).
A. Pressure gauge
Plug
B. relief Valve
B.
C. Plastic cap
A. Pressure gauge
Continued