Snorkel M2639J-sn1000+ - Manual (Page 14)

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2. Operation & Specifications
Figure 4: Lower Control Panel
6. Prior to operating the functions, check that the upper and lower emergency stop
buttons on each control station are retracted; turn clockwise if necessary. Carry out
the following function from the Lower Control Station.
NOTE: DO NOT enter the platform at this stage.
7. Check jib operation by extending the jib to its fully elevated position. Check for
correct routing of the hoses and cables. Check the Emergency Lowering feature of
the jib. Ensure that when the Emergency Lowering lever/button is disengaged, the jib
no longer descends. Return the jib to its rest position using the normal Lower Control
Station.
8. Check mast chains by elevating the masts approximately 30cm above the rest
position. Check for correct routing of the energy chain. Raise the masts to full height
and check for correct adjustment of each lifting chain as follows. Each chain in the
pair should bear load. Use a hand held spring balance or tensiometer apply a
nominal load (approximately 10kgf.) to either chain in the pair. Apply the load about
half way up the chain. Record the approximate deflection i.e. the offset distance from
the mast. Repeat the measurement on the adjacent chain at the same location.
Chains bearing equal load will deflect equal amounts. Carefully adjust the slack chain
until the deflections are approximately equal. Torque up the locknuts to 70 Nm.
NOTE: Apply a thin layer of grease to the lifting chains with a small paintbrush.
1. Emergency Stop
2. KeySwitch - Platform Controls
3. Analogue Rocker
4. Selector Switch - Jib
5. Enable Switch
6. Hour Meter/Battery Capacity Indicator
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2
4
C A U T I O N ! !
Over-tensioning of either lifting chain will result in unnecessary
lifting of the mast.
This will lead to a subsequent increase in machine stowed height.
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6
5
- OFF
- Lower Controls
- Mast
- Mast Rotate