Snorkel AB46RT-sn1000+CE - Manual (Page 7)

7
Lowering Elevating Assembly
1. Open the cover on the hydraulic module (opposite side
of the turret from the chassis control panel).
2. Remove the wire loop retainer from the hand pump
lever, and extend the handle upward to gain
leverage.
3. Operate the manual override (knurled knob) on the
appropriate valve (see fig. 4). Push in to lower /
extend, pull out to raise / retract as required.
4. While holding the appropriate valve in position, pump
the handle in and out until that section of the elevat-
ing assembly is lowered / retracted.
5. Repeat as necessary operating each valve until the
elevating assembly is fully lowered.
Note: Use of the hand pump causes a diverter valve
to open disabling normal controls. The valve will
remain open until pressure is bled off. After operat-
ing any function with the hand pump, cycle the jib
valve in and out 6 times to bleed off pressure.
Figure 4: Emergency Control Operation
Rotating Turret
1. To manually rotate the turret, remove the manual
turret crank from inside of the control side turret
cover.
2. Set ratchet direction on turret crank.
3. Place the socket of the crank onto the hex shaft stub
of the turret rotation gearbox.
4. Turn the crank clockwise to rotate the turret counter-
clockwise, turn counterclockwise to rotate the turret
clockwise.
Emergency control pump
Riser Valve
Boom Valve
Extend Valve
Jib Valve
Extending the Upper
Boom
1. While depressing the foot switch, push the boom
extension control lever rearward to extend the boom,
forward to retract the boom. Release the control
lever to stop extending / retracting. The boom
extension will function at a constant speed, function
speed control setting is not necessary.
Elevating the Jib
1. Set the function speed control dial to the desired
setting. Rotate the dial clockwise to increase speed,
counterclockwise to decrease. If you are not sure
what speed to use, start out slow; the speed can be
varied while operating the function.
2. While depressing the foot switch, push the jib control
lever forward to elevate the jib, rearward to lower the
jib. Release the control lever to stop elevating /
lowering.
Rotating the Platform
1. Set the function speed control dial to the desired
setting. Rotate the dial clockwise to increase speed,
counterclockwise to decrease. If you are not sure
what speed to use, start out slow; the speed can be
varied while operating the function.
2. While depressing the foot switch, turn the platform
rotation control switch counterclockwise to rotate left,
clockwise to rotate right. Release the switch to stop
rotation.
EMERGENCY OPERATION
In the event of powered function failure, the elevating
assembly may be lowered manually by the following
procedure.
NEVER climb down the elevating assembly. If
controls do not respond, ask someone on the
ground to lower the boom manually.