Part No. 43063
Genie Z-30/20
7 - 21
Service Manual - Third Edition
Section 7 - Repair Procedures
5-1
Toggle Switches
See 1-3, Toggle Switches.
5-2
Control Relays
Relays used for dual function switching are double
pole double throw (DPDT) relays.
How to Test a Double Pole Double
Throw Relay
Electrocution hazard.
Contact with electrically charged
circuits may cause death or
serious injury. Remove all rings,
watches and other jewelry.
This procedure covers fundamental relay testing
and does not specifically apply to all varieties
of relays.
1 Turn the key switch to the
OFF
position and
remove the key.
2 Label and then disconnect all the wiring from
the relay to be tested.
3 Connect the leads from an ohmmeter to each
terminal combination and check for continuity.
Terminals 7 and 8 represent the coil and
should not be tested in any other combination.
Bubble number represents the terminal number
Test
Desired result
terminal 7 to 8
640 to 650
W
terminal 1 to 2, 3, 4 & 6
no continuity
(infinite
W
)
terminal 2 to 3, 4 & 5
no continuity
terminal 3 to 6
no continuity
terminal 2 to 6
continuity
(zero
W
)
terminal 1 to 5
continuity
4 Connect 24V DC to terminal 8 and a ground
wire to terminal 7, then test the following
terminal combinations.
Test
Desired result
terminal 1 to 2, 4, 5 & 6
no continuity
(infinite
W
)
terminal 2 to 3, 5 & 6
no continuity
terminal 1 to 3
continuity
(zero
W
)
terminal 2 to 4
continuity
Ground Controls
5
2
7
6
4
8
1
3
Relay Schematic