Multi Pro 5800Page 6 − 92Electrical System
Electric Hose Reel Rate Switch (Optional)
The electric hose reel rate (increase/decrease) switch is
located on the hose reel control box (Fig. 142). The elec-
tric hose reel rate switch is an input to the TEC. When
all necessary spray control conditions are met, the TEC
modifies the current applied to the spray pump control
manifold solenoid valve using a PWM (pulse width mod-
ulation) signal. Pressing the switch to the increase posi-
tion increases the frequency of the PWM signal to the
valve coil which increases hydraulic flow to the spray
pump motor. Moving the switch to the decrease position
reduces the frequency of the PWM signal to the valve
coil and results in less hydraulic flow to the spray pump.
Testing
1. Park machine on a level surface, stop engine and en-
gage parking brake. Remove key from ignition switch.
2. Remove the hose reel control box from the reel
mount. Locate hose reel rate switch and disconnect wire
harness connector from the 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
position. The switch terminals are marked as shown
(Fig. 143) and the circuitry of the switch is shown in the
chart (Fig. 144). Verify continuity between switch termi-
nals.
4. Replace switch if testing determines that it is faulty.
5. If the switch tests correctly and a circuit problem still
exists, check the wire harnesses (see Electrical Sche-
matics and Wire Harness Drawings and Diagrams in
Chapter 11 − Foldout Drawings in this manual).
6. Connect the wire harness connector to the switch
and install the hose reel control box after testing is com-
plete.
1. Hose reel control box 2. Hose reel rate switch
Figure 142
12
Figure 143
BACK OF SWITCH
SWITCH
POSITION
CLOSED
TERMINALS
OPEN
TERMINALS
INCREASE 2 + 3, 5 + 6 2 + 1, 5 + 4
OFF NONE ALL
DECREASE 2 + 1, 5 + 4 2 + 3, 5 + 6
Figure 144
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