English
5.906-736.0 Rev. 00 (07/15)
67
Illustration for pump types 13/20 and 17/20
1 Magnetic piston
Illustration for pump types 9/50 and 13/35
1 Magnetic piston
The flow switch prevents the burner from switching on in
case of missing or insufficient water volume and thus pro-
tects the booster heater from overheating.
With the gun open and sufficient water flow, the solenoid
piston is pushed against the pressure spring.
The solenoid piston closes the contact of the reed switch.
With warm water operation, this opens the fuel solenoid
valve and the burner ignites.
In case of an insufficient water volume, the flow switch im-
mediately switches the burner off in warm water operation
and back on if the water volume suffices.
In order to operate the device in normal operation, the flow
switch must always work synchronously with the pressure
switch. If only one signal is pending, a malfunction occurs.
9.16.2 Flow switch
Summary of Contents for HDS 9/50 De Tr1
Page 46: ...46 English 5 906 736 0 Rev 00 07 15 1 Reflector on both sides 2 Marker light on both sides...
Page 182: ...182 English 5 906 736 0 Rev 00 07 15 13 3 Troubleshooting Yanmar diesel engine...
Page 184: ...184 English 5 906 736 0 Rev 00 07 15...
Page 185: ...English 5 906 736 0 Rev 00 07 15 185 14 3 Maintenance plan Yanmar diesel engine...
Page 189: ...English 5 906 736 0 Rev 00 07 15 189 HDS 13 20 and 17 20 safety block...
Page 190: ...190 English 5 906 736 0 Rev 00 07 15 HDS 9 50 and 13 35 pump head...
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