7 - 48
Genie Z-45/25 & Genie Z-45/25J
Part No. 52709
First Edition • Second Printing
Section 7 • Repair Procedures
Ground Controls
10-1
Control Relays
Relays used for single function switching are single
pole double throw (SPDT) relays.
How to Test a Single Pole Double
Throw Relay
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
1 Label and then disconnect all the wiring from
the relay to be tested.
2 Connect the leads from an ohmmeter or
continuity tester to each terminal combination
and check for continuity. Terminals 85 and 86
represent the coil and should not be tested in
any other combination.
Test
Desired result
terminal 85 to 86
75 to 85
Ω
terminal 87 to 87a & 30
no continuity
(infinite
Ω)
terminal 87a to 30
continuity
(zero
Ω
)
3 Connect 12V DC to terminal 85 and a ground
wire to terminal 86, then test the following
terminal combinations.
Test
Desired result
terminal 87 to 87a & 30
no continuity
(infinite
Ω)
terminal 87 to 30
continuity
(zero
Ω
)
terminal no. 87a - N.C.
terminal no. 85 - ground
terminal no. 30 - common
terminal no. 86 - coil
terminal no. 87 - N.O.
Control Relay Schematic
Содержание Z-45 XC
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