Manual Interface Module - Toro Multi Pro 5800 Service Manual

Manual Interface Module

The manual interface module is used in conjunction with
the increase/decrease switch to adjust current flow to
the hydraulic pump control manifold compensator valve
and to maintain pump rate settings when the booms are
turned off and on again using the master boom (foot)
switch. The module is located behind the hood and in
front of the glove box (Fig. 33). The manual interface
module is automatically disabled if a Pro Control is
installed in the spray system.
Once the operator has set the spray application rate,
whenever the master boom switch is turned off, the
module stores the current (mA) setting available to the
compensator valve solenoid coil. When the master
boom switch is pressed to begin spraying again, the
module ensures that the spray application rate is un-
changed. Because of the module, the operator does not
have to reset spray rates when the master boom switch
is used to turn the spray booms on and off.
The interface module is a solid state device and there is
no reliable means of bench testing the module. If spray
rates have to be reset after turning the booms off and on
with the master boom switch, the manual interface mod-
ule should be suspect.
Testing of the interface module, circuit wiring and in-
crease/decrease switch can be performed as follows:
1. Make sure ignition switch is off. Disconnect wire har-
ness connector from the hydraulic pump control man-
ifold compensator valve solenoid coil.
IMPORTANT: When connecting multimeter test
leads to wire harness connector, do not push meter
test leads into wire harness connector. Connector
damage can occur if meter leads are forced into
connector.
2. Connect one multimeter test lead to one of the wire
harness connector leads and the other meter test lead
to the second harness connector lead (Fig. 34). Set
multimeter to DC Volts setting.
3. Turn ignition switch to the ON position.
4. While monitoring the multimeter display, use the in-
crease/decrease switch to adjust spray rate:
A. Pressing the increase/decrease switch to in-
crease should result in an increased voltage dis-
played on the multimeter.
B. Pressing the increase/decrease switch to de-
crease should result in a decreased voltage dis-
played on the multimeter.
Multi Pro 5800
5. If voltage change to the compensator valve solenoid
coil is correct, the interface module, circuit wiring and in-
crease/decrease switch are functioning correctly. If volt-
age change is incorrect, test the increase/decrease
switch and then circuit wiring. Replace manual interface
module only after other components have tested ac-
ceptably.
6. Remove multimeter and secure wire harness con-
nector to the solenoid coil.
2
1. Dash panel (from front)
2. Glove box
1
1. Pump control manifold
2. Compensator valve coil
Page 5 - - 23
1
3
Figure 33
3. Interface module
2
3
Figure 34
3. Harness connector
Electrical System