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Service Procedure 4 - Full Feature Test
Service Procedure 5 - Verifying the Anti-Crush System
1)
Place an object beneath the boom (e.g. place Maxi 500 boom over a table).
2)
Press the “down” button on the unit’s control panel.
3)
The actuator should stop operating and the downward motion should cease immediately when
the boom makes contact with an object.
4)
If the motion does not stop, remove the lift from service until necessary repairs are performed
(see “Service Procedure 16 - Replacing the Boom Actuator).
5)
Repeat the procedure using the “down” button on the hand control.
6)
When repairs are done, perform anti-crush system test again to make sure it is in proper working
condition.
Function
Activation/
Validation
Actions
Criteria for approval
Lift up/down
Buttons
Full stroke up and down
No abnormal noises; unit reaches up/
down points as per specifications
(see the
Instructions for Use
)
Legs open/
close
Buttons
Full opening and closing
No abnormal noises; legs open fully on
each side (see the
Instructions for Use
)
Rotation and
swiveling of
casters
Manual
Move on short distance,
rotating the lifter
No pulling, no abnormal noises or
vibrations
Braked caster
Manual
Engage the brake on each
rear caster
Easy engagement/disengagement; lift
immobile when brakes are engaged
Hand control
Buttons
Press each button, check
display
All lift functions working; no display
issues
Control panel
Buttons
Press each button
All functions working normally
Emergency
lowering device
Manual
Use emergency
lowering device
(see the
Instructions for Use
)
Boom must lower as per user manual
a
a. In order to have the emergency lowering device work properly, a load that pushes downwards on the boom
must be applied.
Warning: If the anti-crush device does not work properly, this can cause pinching or crushing
which can lead to death or serious injury. If lift components are disassembled in order to maintain
anti-crush system proper operation, it is essential that all parts are reinstalled correctly. If not,
the consequence may be later disengagement, which can lead to death or serious injury.
