EXPRESS DUAL • ED2000
© Bernhard and Company Limited
12
EXPRESS DUAL • ED2000
© Bernhard and Company Limited
13
5. Understanding the Machine (Continued)
5.3 Machine Functions
The EXPRESS DUAL has 2 (or 3) separate motors driving the different functions of the
machine, all are controlled from the control panel. These functions are as follows:
5.3.1 Reel/Spin drive
This motor/gearbox is supported on a bracket on top of the machine table & drives the reel
through a exible coupling. The motor can be swapped to either side of the table and the
output shaft can be tted into the gearbox from either direction.
5.3.2 Grinding Wheel
A motor situated under the table, drives the mainshaft and grinding wheel at 2200 rpm.
5.3.3 Traverse
(Option where tted. ONLY available in conjunction with the freestanding support frame)
This motor and the accompanying drive mechanism controls the automatic movement of
the grinding wheel along the mainshaft.
5.3.4 Stop
Pressing the stop button shuts off both (or 3) motors and locks into the “off” position. None
of the start buttons will operate until the stop button has been unlocked by twisting the
knob counter-clockwise to release it.
NOTE The machine must NOT be stopped when there is contact between the reel and grinding
wheel, except in cases of emergency.
5.3.5 Reset Button (see also Electrical Fault Finding section)
If the main motor is subject to a voltage drop or overloading, the current being drawn will
rise and a safety device will automatically shut the grinder off. The overload trip switch is
situated behind the blue reset button on the cover of the main electrical control box which
is located on the right hand end of the machine (looking from the front).
The trip setting will vary with the electrical specication of each machine and is normally
set to the full load current of the motor. If the overload trip has shut off the grinder it can be
reset by pushing the reset button after a few minutes delay. This will allow the grinder to be
re started.
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