mechanism.
N.B. Excess lubrication cannot cause the machine or
wire rope to slip.
Any machine where the side cases show signs of dents
or damage, or of which the hook is damaged (models
TU-8 and TU-16), should be returned to an approved
repairer of TRACTEL
®
.'s network.
12.
WARNINGS AGAINST HAZARDOUS
OPERATIONS
The operation of TIRFOR
®
machines, in accordance
with the instructions of this manual, is a guarantee of
safety. Nevertheless, it is useful to draw the attention of
users to the following warnings :
– TIRFOR
®
machines as described in this manual
must not be used for lifting people.
– Never attempt to motorise the models of TIRFOR
®
machines described in this manual.
– TIRFOR
®
machines must not be used beyond their
maximum working load.
– TIRFOR
®
machines must not be used for applica-
tions other than those for which they are intended.
– Never attempt to operate the rope release mecha-
nism whilst the machine is under load.
– Never obstruct the operating levers or the rope
release lever.
– Never operate the forward and reverse operating
levers at the same time.
– Never use a handle, other than the telescopic opera-
ting handle supplied, to operate the TIRFOR
®
machi-
ne.
– It is forbidden to replace sheared pins by anything
other than genuine TIRFOR
®
shear pins of the same
model.
– Never anchor the machine other than by its appro-
priate anchor point.
– Never obstruct the machine, which could prevent
the machine, the wire rope and the anchor points
from operating in a straight line.
– Never use the TIRFOR
®
wire rope as a sling.
– Never apply a load to the loose wire rope exiting
from the anchor point of the TIRFOR
®
machine.
– Never subject the controls to sharp knocks.
– Never attempt to reverse the rope completely
through the machine whilst under load.
– Do not operate the TIRFOR
®
machine when the rope
ferrule gets to within 10 cm of the machine.
Otherwise the ferrule is likely to foul the casing and
push the rope guide inside the machine.
13. TROUBLESHOOTING
1) The forward operating lever moves freely and
does not operate the mechanism: the machine has
been overloaded and the shear pins have sheared. See
section 9 for replacing the shear pins.
2) Pumping:
A lack of lubricant in a TIRFOR
®
machine sometimes
brings about a condition known as «pumping» which is not
at all dangerous, but which is inconvenient. This situation
occurs when the jaw which is gripping the rope becomes
locked onto it preventing the other jaw from taking over the
load. As the operating lever is moved in one direction the
machine travels a few centimeters, but when the operating
lever travels in the other direction the machine moves back
the same distance in sympathy with the jaw which is loc-
ked onto the rope. The TIRFOR
®
machine should be tho-
roughly lubricated and it will recommence working normal-
ly.
3) Jerkiness:
This is also a symptom of lack of lubrication. The TIR-
FOR
®
machine should be thoroughly lubricated.
4) Blockage:
If the wire rope becomes blocked in the machine, gene-
rally because a damaged section of wire rope is stuck
within the jaws, it is imperative to stop operating the
machine. The load should be taken by another machine
on a separate wire rope, or by another means, whilst
ensuring that all safety precautions are taken. When
the blocked machine is no longer under load, the dama-
ged rope may be released and removed. Should this not
be possible, return the machine and wire rope to the
manufacturer or an approved repairer.
8
GB
14. HEALTH AND SAFETY AT WORK
All lifting equipment must be supplied, operated, maintained and tested according to the provisions of the rele-
vent health and safety at work regulations.
It is also the responsability of every company to ensure that their employees have been fully and properly trai-
ned in the safe operation of their equipment.
Ensure that the labels are in place.
Replacement labels can be supplied on request.
