User Manual
// Simpro MegaDumper®
Original Instructions // English // v86.0 // February 2022 // Page
32
1.
Manually disable the safety door interlocks as per
, and open the door.
2.
Attach lifting slings to a forklift or hoist, and carefully take the weight of the cradle.
Never place any part of your body underneath the cradle unless it is securely supported.
3.
Remove the powerpack cover
4.
Unscrew the fitting attaching the steel hydraulic pipe to the powerpack, and hold the
end of the pipe over a container with a capacity of at least 2 litres.
5.
Slowly lower the cradle with the forklift, collecting the hydraulic fluid in the container.
6.
Once the cradle is fully lowered, remove the bin from the machine.
7.
Reconnect the hydraulic pipe and fitting, and refill the oil reservoir.
8.
Check that the lowering valve coil
is receiving an electrical signal. A small
LED should glow on the coil plug when the LOWER button is pressed. If it does not,
check the wiring for breaks, corrosion, and rodent damage.
9.
If the coil is receiving an electrical signal but not opening, the lowering valve
cartridge
a.
Remove the lowering valve from the valve stem.
b.
Unscrew and remove the cartridge from inside the valve.
c.
Clean the cartridge with compressed air.
d.
Replace the lowering valve by reversing this procedure.
10.
With the lowering valve replaced, close the door, and test the machine to see if the
cradle now lowers correctly. If the problem persists, the lowering valve coil or
cartridge may need to be replaced
–
contact your agent for support.
11.
Re-enable the interlocks as per
and run the machine through several
complete tipping cycles to ensure the problem has been fully resolved.
4.4.2.2
Mechanical fault
If the lowering valve is operating correctly (makes
‘cl ck’ wh h OWE
R button is
pressed), the problem may be a mechanical fault.
1.
Manually release the safety door interlocks as per
, and open the door.
2.
Provide support for the cradle, either with a structure underneath or with a sling
holding it to the top of the main frame. Allow for it to fall no more than 50mm.
Never place any part of your body underneath the cradle unless it is securely supported.
3.
Attempt to visually identify the cause of the jamming. The most likely problems are:
a.
One of the lifting chains being derailed from the top chain guide
(accessed by removing the cover plates at the top of the mast).
b.
The mast being bent or damaged, jamming one of the mast rollers
c.
Part of one of the curved tipping tracks being bent, interfering with the
correct movement of the follower rollers
d.
Lack of lubrication of the follower rollers or main cradle axle
e.
The cradle being out of level due to poorly adjusted or broken lifting chains.
A technical guide on adjusting the MegaDumper lifting chains is available from Simpro.
