Webasto DBW 46 Repair Manual download pdf (Page 48)

Webasto Thermo & Comfort N.A., Inc. 48 www.techwebasto.com

SERVICING DBW 2010/2020/300 COOLANT HEATERS

heater has responded because the heater has not been

bled properly.

Reset temperature limiter (allow temperature limiter to

cool, self resetting) and repeat complete bleeding

procedure.

NOTE: The heater may be equipped with an

automatically resetting temperature limiter. The

manual reset is not necessary.

8.8.2 FUEL SUPPLY SYSTEM, BLEEDING

When switching the heater on the fuel pump pulls fuel

from the fuel tank to prime the complete fuel supply

system.

Should no combustion be achieved with the first start

attempt, switch the heater off and on again.

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 71 72

Contents Page 3
6. Functional Adjustments 31 4
7. Circuit Diagrams 35 4
8. Servicing 43 4
9. Repair 49 5
10.Instruments and Tools 65 6
11.Product Information 67 6
1. INTRODUCTION 7
ORRECTIONS AND IMPROVEMENTS 8
2. GENERAL DESCRIPTION 9
DBW 2010 10
DBW 2020 11
DBW 300 11
2.1 PARTS OF THE HEATER 12
Flame Detector 13
Photo Disc 13
Locking screw 13
Combustion air 13
Drive motor 14
Fan wheel 14
DBW 2020/300 14
Strainer 15
Pressure 15
Regulation 15
Plunger Valve 15
Nozzle Holder 16
Power consumption 17
130 Watts 17
Red - 12 V 17
Green - 24 V 17
OOLANT CIRCULATING PUMP 18
3. FUNCTIONAL DESCRIPTION 19
4. TECHNICAL DATA 20
ECHNICAL DATA OF THE HEATERS 21
Scholastic 22
5. TROUBLESHOOTING 23
* INERTIA SWITCH: 24
NSTRUCTIONS FOR FAULT FINDING 26
5.3.6 HEATER SMOKES 29
5.3.7 HEATER SMOKES 30
6.1 GENERAL 31
6.2 ADJUSTMENTS 31
If necessary 32
Millimeters 32
Setting Gauge 32
P/N 310646 32
6.2.4 IGNITION COIL CHECK 33
6.2.5 FUEL PUMP CHECK 33
UEL SOLENOID VALVE CHECK 34
OZZLE BLOCK PRE-HEATER CHECK 34
CONTROL UNIT 35
ONNECTOR BLOCK A 42
ONNECTOR BLOCK B 42
ONNECTOR BLOCK C 42
8. SERVICING 43
3. Torque nuts (3) to: 44
INSTALLATION 45
8.7 REMOVAL AND INSTALLATION 46
8.8 FIRST OPERATION 47
UEL SUPPLY SYSTEM, BLEEDING 48
9. REPAIR 49
0.15 ± 0.05 mm 50
(.006 ± .002 inch) 50
Hexagon nut 50
1 Overheat Fuse 51
3 Temperature Limiter 51
+ Black Wire 55
– Brown Wire 55
9.2.13.1 REMOVAL 57
9.2.13.2 INSTALLATION 57
DBW 2020 / 300 60
9.3.1 REMOVAL 62
9.3.2 DISASSEMBLING 62
9.3.3 ASSEMBLING 62
9.3.4 INSTALLING 62
9.4.1 REMOVAL 64
9.4.2 DISASSEMBLING 64
9.4.3 ASSEMBLING 64
9.4.4 INSTALLING 64
10. INSTRUMENTS AND TOOLS 65
LDS18 Special 66
Bearing Grease 66
Product Information 67

Comments to this Manuals

No comments

Webasto DBW 46 Repair Manual Page 48

Comments to this Manuals

Related products and manuals for Water heaters & boilers Webasto DBW 46