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TROUBLE SHOOTING
SECTION 6:
TROUBLE SHOOTING
6-1 PREFACE:
The first portion of this section is to help familiarize you with the operation of the Magnum by briefly
describing what actually happens (mechanically, pneumatically and electrically) when you “push the but
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ton”, refer to Figure 6.1 for additional assistance. The second and third portions of this section deals with
troubleshooting the machine.
6-2 DRILL CYCLE SEQUENCE:
Before the drill cycle sequence can start, the operator must first depress the foot clamp pedal to clamp the
door. The activation of the foot clamp pedal also enables the drill cycle pedal to operate. This is a safety
feature: it prevents the operator from inadvertently ruining a door by attempting to drill it before it is
clamped.
To start the drill cycle, the operator presses the drill start foot pedal. If the latch drill is fully retracted and
the latch drill home position sensor is on, the lock drill valve is then activated by the controller. When the
lock drill stroke is far enough out to activate the lock drill return sensor the controller turns the lock drill
valve off, and the lock drill returns. When the lock drill has returned the lock drill home position sen
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sor is turned on which then enables the latch drill sensor valve to turn on supplying air to the latch drill
cylinder and it begins its stroke. When the latch drill has extended to activate the latch drill return sensor
the latch drill valve is turned off, returning the latch drill to its home position. Opening the clamps at any
time during this cycle will immediately turn off the valve that is on, returning the drills to their home
position and resetting the cycle to the off position.
The flow control valve and controls the speed at which the cylinder retracts and extends meter when air is
fed into either the lock drill or latch drills cylinders, the air escaping the cylinder.
The setting of the lock drill flow control valve determines how fast the lock drill will bore through the
door. Drilling time should be 4 seconds. If it is faster, there is danger of overloading the lock drill motor.
On certain doors with hardwood drill blocks, a longer drilling time may be required.
As the drill sequence occurs the output and input lights on the controller turn on and off as various ac
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tions occur, these lights can be a invaluable troubleshooting help. As an example, if you step on the cycle
start pedal and the foot pedal light on the controller does not come on when the pedal is engaged, then
the controller is not getting the start input, and the machine will not cycle, Taking a close look at the cycle
start foot pedal switch is warranted.
To assist you in determining the cause of a problem when it occurs, we have labeled and identified all
inputs and outputs of the controller modules. The labeling and lights should be clearly visible through
the window on the operator control panel.
Refer to figure 6-1 to clarify the nomenclature and location of the controller components.