Genie Z-51/30J Service And Repair Manual page 74

Service and Repair Manual
Manifolds
4
3
3
1 multimeter
2 9v DC battery
3 10Ω resistor
4 coil
Note: Dotted lines in illustration indicate a reversed
connection as specified in step 6.
3 Set a multimeter to read DC current.
Note: The multimeter, when set to read DC current,
should be capable of reading up to 800 mA.
4 Connect the negative lead to the other terminal
on the coil.
5 Momentarily connect the positive lead from
the multimeter to the positive terminal on the
9V DC battery. Note and record the current
reading.
64
1
- -
+
2
2
+
- -
6 At the battery or coil terminals, reverse the
connections. Note and record the current
reading.
Result: Both current readings are greater than
0 mA and are different by a minimum of 20%.
The coil is good.
Result: If one or both of the current readings
are 0 mA, or if the two current readings do not
differ by a minimum of 20%, the coil and/or its
internal diode are faulty and the coil should be
replaced.
Z®-51/31J
October 2020
Part No. 1268553GT