Fault 75: High Temp Warning-M/G - Toro Reelmaster 5010-H Diagnostic Manual

Fault 75: High Temp Warning—M/G
InfoCenter Display:
Fault Description
High temperature warning for the motor/generator.
Note:
When the temperature of the motor/generator rises to the over-temperature range, the controller for the
motor generator reduces electrical current in relation to the motor/generator temperature. This could result to a
48V system undervoltage warning or fault. If the absolute overtemp value is reached, the cutting reel motors are
disabled and the motor/generator stops generating until the fault is no longer active.
Circuit Description
There are 3 separate temperature sensors located inside the motor/generator.
Note:
A faulty temperature sensor does not cause this fault.
Conditions for Setting the Fault
This fault is reported when a temperature measured inside the M/G exceeds the design limit.
Recommended Service Actions
Step 1: Verify that the fault repeats.
1. Clear the system faults from the InfoCenter. Refer to
2. Operate the machine.
Pass
The fault did not repeat. Go to
Note:
If the fault does not repeat, an isolated event has occurred.
Fail
The fault repeated. Go to Step 2.
Step 2: Make sure that the hood screen is clean.
Clean the air intake screen on the back of the machine.
Step 3: Check that the air intake for the motor/generator is not
blocked.
Ensure that the motor/generator is drawing air through the air intake while the engine is running by feeling the
air movement with your hand or with a piece of paper.
Step 4: Cool off the machine.
1. Park the machine on a level surface.
_____FAULT #75_____
Warning
Clearing Faults from the InfoCenter (page 21)
Returning the Machine to Service (page 22)
276
.
and follow the steps listed.