Printed Circuit Board, Control Panel - Kärcher HDS Middle series Service Manual

Unit Function

2.1.2 Printed circuit board, control panel

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21
20
19
18
17
16
15
14
13
DIP switches (8)
All DIP switches are set to „OFF" in the factory.
The following functions can be activated by
changing these settings:
DIP1 on: Not rotational direction monitoring (in
single phase units)
DIP2 on: Flame sensor is evaluated
DIP3 on: Pump after-running for soft start-up
operation
DIP4 on: Metering of scale inhibitor liquid for
water volume ≥1000 litres
Plug coding
The plugs for the printed circuit board connections
have coding pins (22) and matching recesses in
the printed circuit board holder (23) so that only
the respective appropriate plug can be plugged
into a connection.
22
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12
23
HDS Middle Range / HDS Premium Range
6 7
11 10
1 Connection, cleaning agent tank 1 level
sensor
2 Connection, cleaning agent tank 2 level
sensor
3 Connection, fuel tank level sensor
4 Connection, scale inhibitor level switch
5 Connection, current transformer
6 Connection, flame sensor
7 Connection, temperature sensor
8 DIP switches
9 Connection, program switch
10 Connection, RFID
11 Connection, service switch
12 Connection, water temperature
adjustment
13 Connection, motor distributor printed
circuit board
14 Earth connection, printed circuit board
15 Connection, control circuit transformer 1
16 Connection, control circuit transformer 2
(optional)
17 Connection, exhaust temperature limiter
18 Connection, low-water protection
19 Connection, scale inhibitor solenoid valve
20 Connection, solenoid valve
cleaning agent 1 (optional)
21 Connection, solenoid valve
cleaning agent 2 (optional)
22 Coding pin
23 Recess for coding pin
Service Manual 04.2008
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