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Function Tests Section 4 – Pre-operation
4.3 Function Tests
Function tests are designed to discover any
malfunctions before MEWP is put into service. The
operator must understand and follow step-by-step
instructions to test all MEWP functions.
WARNING
Never use a malfunctioning MEWP. If malfunctions
are discovered, MEWP must be tagged and taken
out of service. Repairs to MEWP may only be made
by qualied/competent repair personnel.
NOTE
To perform these function tests, ensure there is
sufficient space to fully raise and extend boom.
After repairs are completed, operator must perform a
pre-operation inspection and a series of function tests
again before putting MEWP into service.
Prior to performing function tests, be sure to read and
understand Section 5.1 - Start Operation.
NOTE
All motion alarm should sound while operating
any boom or drive function.
4.3-1 Test Main Power Disconnect Switch
1. In engine compartment, turn main power
disconnect switch to off position.
▪
Result: MEWP functions should not operate.
2. In engine compartment, turn main power
disconnect switch to on position.
NOTE
Close all cowlings before proceeding to next
item.
4.3-2 Base Control Console
1. On platform control console, pull out
emergency stop button.
2. On base control console, pull out
emergency stop button.
3. Turn off/base/platform key switch to base
position.
4. Start engine by selecting start position from
start/function enable/emergency power switch.
4.3-3 Test Base Emergency Stop Button
and Base Emergency Stop Light
1. Push in emergency stop button and attempt
to operate any MEWP function.
▪
Result: Engine should shut down and MEWP
functions should not operate.
2. Pull out emergency stop button and restart
engine.
▪
Result: Emergency stop light should
continuously illuminate.
TM
!
HOUR METER
QUARTZ
Base Control Console
Start/Function Enable/
Emergency Power Switch
Off/Base/Platform Key
Switch
Emergency Stop
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