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June 2022
29 Attempt to drive and steer the machine.
Result: The ground controls LCD displays
"PHS: POTHOLE GUARDS STUCK" and the
platform controls LED displays "PHS". The
alarm sounds, and the machine will not steer
or drive. The machine is functioning properly.
Result: The ground controls LCD does not
display "PHS: POTHOLE GUARDS STUCK"
and the platform controls LED does not
display "PHS". The alarm does not sound and
the steer and drive functions operate. Adjust
or replace the down limit switch.
30 Lower the platform to the stowed position and
remove the block under the right pothole
guard.
31 Repeat this procedure beginning with step
30 for the left pothole guard.
32 Lower the platform to the stowed position,
remove the block under the left pothole guard.
33 Raise the platform 7 to 8 feet / 2,1 to 2,4 m.
34 Lift the safety arm, move it to the center of the
scissor arm and rotate down to a vertical
position.
35 Lower the platform onto the safety arm.
Crushing hazard. Keep hands
clear of the safety arm when
lowering the platform.
36 Turn the selector/key switch to the off
position.
37 Disconnect the platform controls (PCON) from
the platform control cable.
38 Securely install the connector of the GCON
power control harness into the platform
control cable.
39 Working at the platform, securely install the
connector from the platform controls (PCON)
into the platform control cable.
40 Raise the platform and rotate the safety arm
to the stowed position.
41 Turn off all machine power.
Part No. 1272215GT
Quarterly Maintenance Procedures
Q-21
Q-21 Tes t the Platfo rm Gate P roximi ty Switches an d the Extensi on De ck Limi t Switch - GS-2 646 AV, GS-26 46 AV35
Test the Platform Gate Proximity
Switches and the
Extension Deck Limit Switch -
GS-2646 AV, GS-2646 AV35
Genie specifications require that this procedure be
performed quarterly.
Maintaining the limit switches is essential to safe
operation and good machine performance.
Operating the machine with a faulty limit switch
could result in reduced machine performance and
a potentially unsafe operating condition.
Note: Perform this procedure with the machine on
a firm, level surface that is free of obstructions.
Platform Gate Proximity Switches:
1
Raise the platform approximately 8 feet /
2.4 m from the ground.
2
Open the rear entry gate and prop open.
Scissor Lifts
Maintenance Manual
49
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