Testing Off/Base/Platform Switch; Testing Positive Air Shutoff (If Equipped) - Skyjack SJ85 AJ Operating Manual

Section 4 – Pre-operation
Base control console
HOUR METER
QUARTZ
TM
uto t

4.3-8 Testing off/base/platform switch

1. Ensure both emergency stop buttons at base
and platform are pulled out.
2. Start engine.
3. On base control console, turn off/base/platform
key switch to off position.
Result: Engine should shut down and MEWP
▪
functions should not operate.
4. On base control console, turn off/base/platform
key switch to platform position.
WARNING
Ensure that you maintain three points of contact to
mount/dismount platform.
5. Enter platform and close gate/drop bar.
6. Select start position from engine start/on/off
switch until engine starts.
7. Dismount from platform.
8. On base control console, attempt to activate
each boom and platform switch while holding
start/function enable/emergency power switch in
function enable position.
Result: All boom and platform functions
▪
should not operate while holding start/function
enable/emergency power switch in function
enable position.
9. Push in emergency stop button to turn engine
off.
10. Pull out emergency stop button.
213217AAA
52
Positive air shutoff
switch
4.3-9 Testing positive air shutoff (if
This function test should NOT be performed while
the engine is running.
1. Open engine compartment cover.
2. On the base control console, lift switch guard
3. Push rocker switch to "off" position. LED light
4. Close engine compartment cover. Ensure switch
Positive air shutoff option
Shutoff valve
engaged
equipped)
CAUTION
and push rocker switch to "on" position.
should continuously illuminate. Walk back to the
engine compartment side of the MEWP .
Result: The shutoff valve should disengage
▪
after 20 seconds (refer to shutoff valve
diagrams).
is returned to "off" position and switch guard is
down.
Function Tests
Shutoff valve
disengaged
SJ85 AJ