Tractel Minifor TR 10 Operation And Maintenance Manual Download Page 6

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Never secure the hoist rigidly on a structure.

Ensure that the wire rope strands move freely and
do not rub against anything.

Note : If an idler pulley is interposed to hoist the load
on a slanted plane, due to the driving action of the
load, apply the lifting configuration described in
section 4.4.3.

4.4.5 Hoist secured on floor

Lifting using idler pulley. Same

recommendations as for case described in 4.4.4.
The strength of the pulley and its attachment must
be calculated for a double load force (Fig. 12). Also
see section 5.5.

4.4.6 Hoist bearing against surface, load

freely suspended

Strictly follow the instructions given in section 4.2.

and 5.5. Be especially careful to avoid any swinging
of the load. Proceed as shown in Fig. 5.

4.4.7 Hoist bearing against surface, load not

freely suspended

This configuration requires use of an idler pulley

secured directly in line with the hoist (Fig. 6). See
sections 4.2 and 5.5.

4.4.8 Tackle

All the above recommendations apply, especially

when tackle is used. In this case, special care must
be taken when tensioning (see section 11).

Note: If idler pulleys are used, be careful to position
the limit stops as described in section 5.4 (Fig. 13).

5. SETTING UP

5.1 Preliminary checks
• Ensure that the load or force does not exceed the

maximum utilization load specified for the hoist.

• Remember that the use of idler pulleys will

significantly increase the force to be produced to
lift a load.

• Ensure that the strength of the fixed point is

sufficient to safely apply a force equal to the
maximum utilization load (or twice this load in the
configuration described in 4.4.5).

• Ensure the hoist is correctly secured.

• Ensure the lifting wire rope is in good condition.

• Ensure the length of the lifting wire rope is

sufficient for the distance to be covered by the load.
Provide an additional 1.50m for passage through
the hoist and a sufficient length of loose strand.

• Ensure the length of the electrical control cable is

sufficient to connect the device at the location
defined by the operator under safe working
conditions.

5.2 Electrical recommendations

1) Before using the hoist with a new connection, refer

to the nameplate on the motor.

Check the characteristics of the power supply,

single phase or three-phase, voltage, available
amperage. Check that the current supplied is
compatible with the characteristics on the motor
nameplate. The available current must be equal or
greater than the current indicated on the nameplate.

2) If a power supply extension is used, ensure the

potential has the following characteristics :

- single phase 230 V. : 3 wires (1 phase,

1 neutral, 1 ground)with section of 2.5 mm2.

- three-phase 400 V. : 4 wires (3 phases,

1 ground) with section of 2.5 mm2.

These characteristics are valid for up to 50 m of

electrical cable. For greater lengths, contact your
TRACTEL

dealer.

3) The electrical extension connection must be

reinforced by an accessory (« sock ») to
withstand the weight of the extension at the
connector.

4) If the connector supplied with the electrical power

supply cable is to be changed, this intervention
must only be performed by a qualified technician.
Any intervention on the control box cable must
also only be performed by a qualified technician.
No intervention should be performed on the
electrical unit of the hoist (except for changing
a fuse), by anyone other than a TRACTEL

approved repair agent.

5) Check that the worksite or building installation on

which the minifor

™

is to be connected is equipped

with the regulatory electrical safety devices such
as a differential circuit-breaker and a ground
connection to protect the operator, the minifor

™

and the equipment.

6) If the minifor

™

is supplied from an electric power

generator, check that it provides (at minimum),
the required startup voltage and power. (6 kVa
for single-phase minifor