nifty TrackDrive TD120T Series, Operating/Safety Instructions Manual, Page: 45 / 55

TrackDrive (TD) Series
Operating & Safety Instructions
English/USA – 02/17
43
5. In order to verify only the operation of the alarm circuit whilst the booms are elevated, it is
possible to again manually depress each jack foot switch plunger in turn by reaching inside the
outrigger housing and finding the safety switch. Once depressed, the alarm should sound until
the plunger is released. Operation of the booms is left unaffected as the ‘boom switch bypass’
function will allow the operator to return the booms to the stowed position, even whilst the alarm
is still sounding. This is to prevent the operator being stranded in the air whilst a jack foot
remains in the unstable position.
6. Power off the Niftylift.
13. Information explaining the applications for use relevant to the category to which reference is
made;
Not applicable
14. Checking test intervals where relevant.
Check the operation of the stabiliser monitoring system at the beginning of every duty cycle.
A2 MONITORING OF STABILISERS – BOOMS
The monitoring of the stabilisers is PL d in accordance with ISO 13849-1:2008 as required by BS EN
280:2013+A1 2015.
1. The limits of the safety-related parts to the category selected and any fault exclusions;
The stabiliser monitoring is performed from the boom switch which allows movement of the stabilisers
only when the booms are stowed.
The boom switch relies on the electrical contacts closing allowing the jack circuit to become ‘active’.
Proper maintenance and daily safety checks to be observed.
The boom switch cannot be overridden to bypass the monitoring system other than by demounting the
switch with the use of tools. Reasonably foreseeable misuse.
If the boom switch is removed or if it is not maintained in accordance with the appropriate
documentation the stabiliser monitoring may not function in compliance with the requirements as a
PL d category 3 device.
2. The limits of the SRP/CS and any fault exclusion, for which, when essential for maintaining the
selected category or categories and safety performance, appropriate information (e.g. for
modification, maintenance and repair) shall be given to ensure the continued justification of the fault
exclusion(s);
Do not alter, modify or disable in any way the controls, safety devices, interlocks or any other part of
the machine.
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.