November 2021 Maintenance Manual
Quarterly Maintenance Procedures
Part No. 1305686GT Scissor Lifts 49
Pothole Limit Switches
27 Place a wooden block approximately 2 inches
/ 5 cm tall under the right pothole guard.
28 GS-55: Raise the platform approximately
9 feet / 2,8 m.
All other models: Attempt to raise the platform
to approximately 8 feet / 2,4 m.
GS-55: Result: The pothole guard contacts
the block and does not fully deploy. The
ground controls LCD displays "PHS:
POTHOLE GUARDS STUCK" and the
platform controls LED displays "PHS". The
alarm sounds and the platform will lift to 9 feet
/ 2,8 m or beyond. The machine is functioning
properly. Refer to the Operation Indicator
Codes below.
All other models: Result: The pothole guard
contacts the block and does not fully deploy.
The ground controls LCD displays "PHS:
POTHOLE GUARDS STUCK" and the
platform controls LED displays "PHS". The
alarm sounds and the platform will lift to 8 feet
/ 2,4 m or beyond. The machine is functioning
properly. Refer to the Operation Indicator
Codes below.
Result: The pothole guard contacts the block
and does not fully deploy. 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 machine
will continue to lift the platform after the
pothole guards are deployed. Adjust or
replace the pothole limit switch.
LCD display
LED display
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.
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