Edition 3 - 04-01-2010 TWLC Low Clearance Hydraulic Torque Wrench Operation Manual
L F 10063 SPX Bolting Systems Page 7 of 17
4. Safet
Always adopt safe working practices when working with pressurized equipment. Protective clothing
including eye and head protection must always be worn as well as gloves and safety footwear. Exhibit
common sense and most importantly of all, REA AN UN ERSTAN THE OPERATING MANUAL AN
PROCE URES.
a) Never exceed the torque wrench maximum working pressure (Advance 689 Bar / 10,000 psi, Retract
69 Bar / 1000 psi)
b) Keep hands and fingers clear of the torque wrench head and reaction pad area, before and during
operation. Fingers could be inadvertently trapped if care is not taken.
c) Keep other personnel clear of the working area and only allow trained personnel to use the
equipment. Ideally rope off the working area.
d) Prior to operation, ensure that all hoses, sockets and ancillary equipment are undamaged and fit for
purpose. Ensure that all torque wrench components (i.e. head, body, etc.) are properly attached and
secure. Ensure that the head release pin is properly located.
e) o not strike any of the components, including the socket, with a hammer in order to shock the nut
free.
f) Check that reaction structures are strong and rigid enough to accept the torque tool reaction forces.
o not use wedges, packing pieces, etc as a temporary reaction.
g) If backing spanners are used, keep hands and limbs well clear of the backing spanner, as it may
rotate during wrench operation.
h) Take care when handling equipment. o not manoeuvre or carry the torque wrench by its couplings.
Quick connect couplings are especially susceptible to knocks and damage and therefore care must
be taken. Note that damaged couplings are difficult to connect. o not force couplings.
i) Check that hoses are in good condition and undamaged. When assembling the hydraulic hose, do
not unduly bend hoses beyond their safe bend radius limit or kink the hose.
j) o not retighten any equipment while under pressure. o not move or rotate the swivel manifold
while under pressure.
k) Ensure that any sockets or inserts that are to be used with the torque wrench are of impact quality
and capable of withstanding the full torque output of the tool.
l) Some torque wrenches weigh in excess of 20Kg, therefore ensure that lifting equipment is available
and used.
m) o not strike, misuse or abuse any of the equipment. If any abuse or misuse of the equipment is
evident, the warranty shall be invalid and the Manufacturer shall not be responsible for any injuries or
failures as a result.
n) In some instances it may be necessary for the Operator to support the torque wrench while it is
tightening, i.e. upside down applications. If the torque tool cannot be strapped into position using
ropes, etc, then the operator must take the utmost care to avoid pinch points.
o) Never use the torque wrench with just one hose connected to the Advance port (port ‘A’). This will
cause a pressure intensification within the retract chamber possibly leading to tool damage. Always
ensure that both hoses are connected.
p) If not in use, and when practical, disconnect the wrench and pump from the power supply to prevent
accidental starting.
THE LWLC TORQUE WRENCH IS ESIGNE FOR THE TORQUE TIGHTENING OF ENGINEERING
NUTS ONLY. O NOT USE IT FOR ANY OTHER PURPOSE
