Multi Pro 1750
Page 5 − 63
Electrical System
Foam Marker Kit Control Switch (Optional)
The foam marker kit control switch is used to control the
flow of foam to the right or left boom. Power to the entire
foam marker system is controlled by the foam market
ON/OFF switch. The foam marker control switch is
mounted to the steering column on the left side of the
steering wheel (Fig. 87).
Testing
1. Park machine on a level surface, stop spray pump,
stop engine and engage parking brake. Remove key
from ignition switch.
2. Locate the foam marker control switch and unplug
wire harness connector from switch.
3. With the use of a multimeter (ohms setting), the
switch functions may be tested to determine whether
continuity exists between the various terminals for each
switch position. The switch terminals are marked as
shown (Fig. 91) and the circuitry of the switch is shown
in the chart (Fig. 92). Verify continuity between switch
terminals.
4. Replace switch if testing determines that it is faulty.
5. If the switch tests correctly and a circuit problem still
exists, check wire harness (see Electrical Schematic
and Wire Harness Drawings in Chapter 10 − Electrical
Drawings in this manual).
6. After testing, connect the harness connector to the
switch. Install console panel to machine.
1. Steering wheel 2. Foam maker kit
control switch (opt.)
Figure 90
1
2
Figure 91
BACK OF SWITCH
SWITCH
POSITION
CLOSED
CIRCUITS
OPEN
CIRCUITS
RIGHT 2 + 3 2 + 1
NEUTRAL NONE 2 + 3
LEFT 2 + 1 ALL
Figure 92
NOTE: Foam marker kit control switch terminals 4, 5
and 6 are not used on Multi Pro 1750 machines.
Electrical
System
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