ET 66 - ET 66 M operator’s manual
GB
BALANCING ACCESSORY EFFICIENCY
This check permits you to make sure that wear and tear has not altered the mechanical
tolerances of flanges, cones, etc. beyond certain specific limits.
A perfectly balanced wheel, removed and remounted in a different position, must not
give unbalance greater than 10 grams for a car wheel or 100 grams for a truck wheel.
If the unbalance is higher check all the accessories carefully and renew any items that
are dented or worn such as bent flanges and so forth.
Always remember that if you are using a cone to centre the wheel on the shaft, perfect
results can never be obtained if the centre hole in the rim is not perfect, i.e. off-centre
or out of round; in such cases better results will be obtained when the wheel is
centered with the rim holes.
A last important point: any difference between the way the wheel is mounted on the
car and on the balancing machine will result in a degree of unbalance. This can only be
corrected by on-vehicle balancing with a finishing balancer to complement the work of
the fixed balancing machine.
TROUBLE-SHOOTING
The following list indicates a series of possible faults that the user can remedy if the
cause is among the various alternatives suggested. In all other cases it will be neces-
sary to request the intervention of your nearest Corghi service centre.
The machine fails to switch on and the master switch
indicator lamp is not lit
No power at electrical socket
➥ Check that mains power is present
➥ Check the efficiency of the electrical system in the tyre shop
The plug on the machine power cord is faulty
➥ Check the plug and renew it if necessary
The mains/battery selector is set to “battery” but the battery is either disconnected
or discharged (only for ET66)
➥ Connect the battery to the balancer with the cable supplied and check that the
battery is properly charged
The machine fails to switch on but the master switch indicator lamp is lit
One of the fuses on the circuit board is blown (F1, F2 or F3)
➥ Renew the fuse
The mains/battery selector is set to battery but the battery is not connected (only for
ET66)
➥ Set the selector to “mains” or connect the battery and check that it is properly
charged.
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