40Repair Manual PS-6400/PS-7300/PS-7900
13 HANDLE HEATING
EIN AUS
1
23
4
Conductivity tests
Generator test (2)
Switch OFF the handle heating.
Test conductivity between the insulated pin in the middle
of the switch and the cylinder (ground).
No conductivity - test cable and generator (038.148.020)
for damages and replace if needed.
Switch handle heating (3)
Both handles are heated constantly or from time to time
despite heating switch in OFF position:
Test insulation cap (038 146 030) at middle contact fro
damages and replace if needed.
Place switch in OFF position and remove the pin in the
middle. Test conductivity between both connections.
Conductivity - replace switch (975.001.250). Bend the
connection points of the new switch in the same way as
can be seen on the old switch.
Place the switch 1 for the handle heater in the ON posi-
tion and remove the pin in the middle of the switch.
Test conductivity between both connections on the switch.
No Conductivity - replace switch (975.001.250). Bend
the connection points of the new switch in the same way
as can be seen on the old switch.
Ground line (4)
Test conductivity between the connection at the back (at
the side of the second handle) of the sleeve and the cyl-
inder (ground).
No conductivity - make connection to ground and re-
place ground line (970.311.570) if needed.
Tools
Conductivity tester or multi meter to test electrical re-
sistance and conductivity.
ON OFF
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