Desa Master B35CED Manuel D'utilisation page 9

Figure 12 – Spark plug gap, 35.000 Btu/Hr model.
A.
Figure 13 – Spark plug rotation, 35.000 Btu/Hr model.
SPARK PLUG
(70/100/150,000 Btu/Hr Models)
1. Remove upper shell (see page 6).
2. Remove fan (see page 9).
3. Remove spark plug wire from spark plug.
4. Remove spark plug from burner head using 13/16" open-end
wrench.
5. Clean and regap spark plug electrodes as follows:
70/100,000 Btu/Hr Models: 1.9 mm
150,000 Btu/Hr Model: 2.8 mm
6. Install spark plug in burner head.
7. Attach spark plug wire to spark plug.
8. Replace fan (see page 9).
9. Replace fan guard and upper shell.
A.
C .
Figure 14 – Spark plug removal, 70.000, 100.000, 150.000
Bth/Hr models.
A.Bend here to adjust gap
B.Gap
Figure 15 – Spark plug gap, 70.000, 100.000, 150.000 Btu/
Hr models.
A. Bend
A.
here to
adjust
gap.
1,4 mm
A. Burner strap.
A.Burner head
B.
B.Spark plug wire
C.Spark plug
A.
B.
SERVICE PROCEDURES
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.
A.
E.
D.
Figure 16 – Air output, air intake and lint fi lters, 35.000 and
70.000 Btu/Hr models.
A.
E.
D.
Figure 17 – Air output, air intake and lint fi lters, 100.000
and 150.000 Btu/Hr models.
A.
C.
Figure 18 – Pressure Gauge Plug removal.
A.Air Intake
Filter
B.Filter end
B.
cover
C.
C.fan guard
D.Air output fi lter
E.Lint Filter.
A.Air Intake
B.
C. Filter
B.Filter end
cover
C.fan guard
D.Air output
fi lter
E.Lint Filter.
A. Pressure gauge
Plug
B. relief Valve
B.
C. Plastic cap
7
GB