Checking The Operation Of The Safety Interlock Switches - Toro Sand Pro 3040 Service Manual

Checking the Operation of the Safety Interlock Switches

Sand Pro ® 3040 and 5040
20251SL Rev A
Do not disconnect safety interlock switches. They are for the
operator's protection. Check the operation of the safety interlock
switches daily for proper operation. Replace any malfunctioning
switches before operating the machine.
The machine interlock components include:
•
Operator seat switch
•
Traction neutral switch
•
Interlock relay
•
Diodes D1 and D2
•
Seat switch relay (optional)
•
PTO switch (optional)
On standard machines, the interlock relay is used in conjunction with the seat
switch, the traction neutral switch, and diodes D1 and D2 to form the interlock
system. The traction neutral switch must be properly adjusted and the traction
pedal must be in the Neutral position for the engine to crank; refer to
the Traction Neutral Switch (page
through the traction neutral switch or the Operator seat switch for the engine
ignition system (magneto) to function. During operation, if the interlock relay
should be de-energized (e.g. operator rises out of the seat with the traction pedal
depressed), the magneto will be grounded and the engine will stop.
On machines with an optional rear remote hydraulics kit or optional hydraulic
switch kit, the seat switch relay and the PTO switch also become part of the
interlock system. The engine will not crank if the Operator is out of the seat and
the PTO switch is engaged (even if the traction neutral switch is in the N
position). During operation, if the seat switch relay should be de-energized
(e.g. operator rises out of the seat with the PTO engaged), the magneto will
be grounded and the engine will stop.
Testing of the individual interlock components is included in
Components (page 6–6).
CAUTION
6–16). The interlock relay must be energized
Page 6–5 Electrical System: Electrical System Quick Checks
Adjusting
EUTRAL
Testing the Electrical