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High pump motor temperature
High pump motor temperature
..
Important!
Important!
If the truck is allowed to c
If the truck is allowed to continue working despite the temperature warnings
ontinue working despite the temperature warnings
it can result in an automatic stop of the drive
it can result in an automatic stop of the drive motor system, the error codes will
motor system, the error codes will
be E98 with “Hydraulics stopped” subinfo will be “motor temp too high e2” or
be E98 with “Hydraulics stopped” subinfo will be “motor temp too high e2” or
“controller's temp too high e4” registered in the l
“controller's temp too high e4” registered in the log. If the temperature is
og. If the temperature is
allowed to drop to the normal level again, the truck will run at ful
allowed to drop to the normal level again, the truck will run at full capacity
l capacity
again.
again.
1. W
1. Was the warning
as the warning text
text "High tmp
"High tmp
hydrau M" visible on the display when
hydrau M" visible on the display when
the symptom occurred?
the symptom occurred?
šš
No
No
Start using the truck again and ask the
Start using the truck again and ask the
truck driver to report any new warning
truck driver to report any new warning
messages.
messages.
Y
Yes
es
2. Does the machine housing fan
2. Does the machine housing fan
work?
work?
No
No
Go to point 4
Go to point 4 below.
below.
Y
Yes
es
3. * Check that nothing obstructs the
3. * Check that nothing obstructs the
air flow to the motor.
air flow to the motor.
* If the mot
* If the motor is dirty, clean it.
or is dirty, clean it.
* Let the truck rest until the
* Let the truck rest until the
temperature has dropped.
temperature has dropped.
* If the truck works above its specified
* If the truck works above its specified
capacity the acceleration and speed
capacity the acceleration and speed
must be lowered or the current limit
must be lowered or the current limit
lowered.
lowered.
4. Connect a voltmeter to the fan.
4. Connect a voltmeter to the fan.
Is the voltage B+ 48V?
Is the voltage B+ 48V?
šš
No
No
Check that the fuse F8 has not blown
Check that the fuse F8 has not blown
and that the cables are intact.
and that the cables are intact.
Also check the thermostat if the truck
Also check the thermostat if the truck
is in the cold store design.
is in the cold store design.
Y
Yes
es
5. Change the fan.
5. Change the fan.
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