Trelawny TCG 250, Руководство по эксплуатации и обслуживанию

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TCG250 Floor Grinder
starting
Machines fitted with electric motors
Inspect the supply cable; Check that no damage has been
caused to the outer casing and that there are no exposed or
loose wires. Obtain the assistance of an electrician if a fault
is found. Do not use the machine until it has been rectified.
Check that the cable is not running across sharp or jagged
edges and that it is not in contact with any liquid.
It is recommended that the ‘jacking stand’ is employed to
start the machine. To engage the stand, tilt the machine to lift
the grinding head(s) and, whilst tilted, depress the foot pedal
(at the rear of the machine, between the wheels), keeping
it depressed whilst lowering the machine back towards its
normal working position. This action will result in the front
of the machine appearing slightly raised. To disengage the
stand ready for use, tilt the machine rearwards slightly and the
stand will be heard to retract. The grinding head(s) will now be
engaged with the working surface.
Turn red isolator knob to the “ON” position. The machine
is now energised. To start the machine, depress button
(“Deadman’s handle”) and keep depressed. As soon as the
button is released, the machine will stop.
PRE-START CHECK
ALL VERSIONS
Check all bolts and screws for tightness. Ensure that all fittings
are secure. Check the drive belts for correct tightness. There
should normally be approximately 13mm (1/2”) of free play
when the belt is depressed in the middle position between
the two pulleys. To check and set the belt tension, refer to the
Belt installation & Adjustment section.
The TCG250 is supplied with a specially commissioned
electric motors and starter switch assembly.
Each unit is fully tested and the overload relays have
been calibrated and set according to the manufacturer’s
specifications.
In the event of malfunction on a new machine, the owner
should first check that the power supply on site is suitable and
adequate.
All cables should be fully uncoiled and never left wrapped
around cable reels or tied in loops. The starter box is fitted with
a safety feature to protect the motor and relays from damage.
Should an overload condition occur which triggers the thermal
overload within the starter, rotate the isolator switch to the
“OFF” position.
Note that the circuitry may have to cool down for a period
before the overload switch can reset itself upon depressing
the stop button.
The starter boxes are preset and under no circumstances
should they be tampered with, stripped down or adjusted,
otherwise it will invalidate the warranty.
110v Motor
The motor requires the minimum of a 32amp, 110v power
supply. Always use the shortest possible length of extension
cable. The 110v machine requires the use of 4mm2
extension cable up to a maximum of 20 metres, as it draws
a significant operating current. The use of 2.5mm2 for 110v
machines is not recommended and can cause operating
problems, particularly in conjunction with poor supplies,
where excessive voltage drops will be encountered and
damage to the machine may occur. Use a centre tap
transformer with a continuous rated output of at least 3.0KVA.
In practice this means that a 5.0KVA transformer must be
used. Manufacturers have different methods of rating their
equipment. All transformers and cables should be fitted
with 32amp plugs and sockets. The 230v supply to the 110v
transformers ideally should be rated to at least 20amp if
supply problems are to be avoided.
230v and 415v Motors
Take particular care when using 230v or 415v machines,
ensure that the electrical supply is earthed and that breakers
and fuses are correct for the loading. The 230v motor requires
the minimum of a 13amp, 220v power supply. The 415v motor
requires the minimum of a 10amp, 380v power supply. Always
use the shortest possible length of extension cable. To avoid
voltage drop the cable must have a minimum core wire size
of 2.5mm
2 cross-section area. Maximum length of cable 50
meters.
CAUTION! Beware of poisonous fumes coming from
engine versions. Start and operate only in well-ventilated
areas.
BE CAREFUL! The exhaust and other engine parts are hot
during and for some time after operation. Do not touch
them.
IMPORTANT! 415v 3 phase versions only: Ensure the supply
cable is of a 5 core construction and that all contacts
within the plug and socket are wired in accordance with
regulations. The control electronics require the neutral
circuit to be functional. If 4 core cable is used, where no
functioning neutral is present, the machine will not start
or run.