nifty TrackDrive TD120T Series Operating/Safety Instructions Manual page 43

TrackDrive (TD) Series
Operating & Safety Instructions
Maintenance must only be carried out by appropriately trained and competent persons.
3. The effects of deviations from the specified performance on the safety function(s);
If the monitoring of the stabilisers does not function as intended it is possible that the Niftylift may
encounter slopes for which it is not rated.
If the Niftylift encounters slopes beyond the rating as specified on the serial plate the product may
become unstable.
If the product becomes unstable, damage to the Niftylift, other equipment and properties, injury or loss
of life of the operator and surrounding persons may be a risk.
4. Clear descriptions of the interfaces to the SRP/CS and protective devices;
The monitoring of the stabilisers is primarily the series circuit through the outrigger feet on each
stabiliser. The initial 'proving' circuit that permits the booms to rise has to pass through the safety
relay module which provides a two channel output for safety. The first channel will allow the operation
of the selected power option on the trailer. The second channel has overall control of the Master dump
for the hydraulic circuit. Simultaneous operation of both channels is required for the machine to
function. Loss of either channel will cause the circuit to halt operation.
5. Response time
The monitoring of the stabilisers is active at all times providing the security of the outrigger feet being in
contact with the ground whilst the booms are elevated. In the event of encountering a loss of foot
contact the system will sound an alarm until the booms have been lowered on to the boom rest and the
foot contact has been corrected.
6. Operating limits (including environmental conditions);
All components within the stabiliser monitoring are rated to the environmental conditions acceptable for
the machine; refer to Section 2.2.
7. Indications and alarms;
Jack feet contact
The action of the stabiliser monitoring circuit will cause the klaxon to sound and will be indicated by the
red warning light on the base and cage location, if the booms are raised and the loss of any jack foot
contact is detected.
8. Muting and suspension of safety functions;
While the stabiliser monitoring is always active with the booms raised, the changeover of the boom
switch permits continued operation of the booms until they are returned to the 'stowed' position. The
loss of jack foot contact will be indicated via warning lights regardless of the boom position.
9. Control modes;
The stabiliser monitoring circuit has no user controllable modes of operation.
10. Maintenance; Maintenance check lists;
Normal maintenance
 Visual check of jack foot switches, boom switch and connection wires.
 Check of power supply to verify it is correct.
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English/USA – 02/17