Simpro Dumpmaster, User Manual

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3. Ensure the retainer caps on the arm pivot bars are in place, and all fixings are tight.
4. The gas struts are designed to balance the weight of the door throughout its travel,
and hold it open. Over time, the gas in the struts can leak out, resulting in reduced
lifting force. If the struts do not hold the door open, they may need to be replaced.
5.8.3 Safety door interlock
The standard Dumpmaster safety door is fitted with a solenoid-operated safety interlock. The
interlock is an Idec model HS5E-D4403-G or HS5E-F4403-G,
‘power -to- unlock’ type, with four
internal contacts which are used to determine whether the door is closed and locked.
5.8.3.1 Interlock manual override
This work should only be carried out by a qualified technician.
The interlock Override Key should be stored in a location only accessible to supervisors
and technical staff.
All routine cleaning and maintenance on the Dumpmaster should be conducted with the
cradle in the lowered position. If for any reason the interior of the safety cage needs to be
accessed
while the cradle is raised , the interlock(s) can be manually disabled by carrying
out the following procedure:
1. With the cradle fully lowered, open
the safety door.
2. Insert the supplied yellow Override
Key into the triangular cam on the
door
interlock, and turn it to the
UNLOCK position. The door can now be opened even while the cradle is raised.
-
On machines with a standard control system, the safety door will now function
as a switch
– the cradle cannot be moved while the door is open, but can still
operate while the door is shut.
-
On machines with a Pl(d) or Pl(e) safety-monitored control system, the system
will enter SAFE MODE
– the machine is completely disabled, and the cradle
cannot be moved until the door is closed, the interlock is re-enabled, and the
system is reset.
3. Shut the safety door and raise the cradle to the desired position; then open the door
and carry out internal cleaning or maintenance as required.
4. Once the work is complete, use the Override Key to turn the interlock cam back to
the LOCK position.
5. Remove the Override Key and store in a safe location .
6. Shut the safety door and fully test the machine and all safety functions before
returning to service. If the machine is fitted with a Pl(d) or Pl(e) safety-monitored
control system, press the blue RESET button for two seconds to test and reset the
safety functions.
Do not open the safety door with the Override Key inserted but not fully turned (less than
90°) as this may damage the interlock or cause operational failures.
Do not apply excessive force to the Override Key or the interlock components.
Do not leave the Override Key inserted in the interlock during normal operations.