Safeline Signature, Operating And Instruction Manual

Page: 8 / 168

PRELIMINARY PAGES
viii 4618–021
6.
Avoiding aperture damage
At all times ensure that the product does not come in contact with, or impact onto the detector aperture or
aperture lining.
7.
Handling and lifting
When transporting and handling the detector damage may result if the lifting equipment (e.g. sling, cable
assembly or by hand) passes through the aperture of the detector.
Never pass any lifting or supporting equipment through the detector aperture.
Always observe best practices for handling heavy items when lifting or moving the detector.
8.
Detector support structures
Avoid supporting the detector on vibrating structures and/or machines subject to mechanical shock.
No part of the supporting structure should rely on the detector for structural integrity.
No part of the supporting structure should be attached to the detector other than through the detector
mounting blocks supplied.
9.
Belt maintenance
Certain substances (e.g. metal fragments, liquids etc.) which can be detected by the metal detector are likely
to cause unexpected detections (often giving the appearance of erratic/incorrect operation) if they adhere to
the conveyor belt.
To minimise the chance of this occurring:
a)
Avoid any operations that may cause metal fragments to come into contact with the conveyor belt e.g.
welding, metal drilling or cutting in the vicinity of the conveyor belt.
b) Clean the conveyor belt regularly.
10.
Orientation of contaminants
Metal detector sensitivity is expressed as the diameter of the smallest spherical object which can be detected.
(i.e. diameter of a ball).
Sensitivity to non-spherical objects of the same material (e.g. wire fragments) will vary according to the
orientation of the object as it passes through the detector aperture. If the diameter of the object is less than the
stated spherical sensitivity the object may not be detected.
11.
Product packaging materials
To achieve the optimum detector performance in applications where the product being inspected is packaged
- ensure that the packaging materials used are free from metal contamination.
12.
Continuous maintenance and testing
It is recommended that at regular intervals testing with an appropriate test sample is performed to ensure the
detector and any attached reject mechanism is functioning correctly.
It is recommended that inspection and cleaning of the detector system should be carried out at regular
intervals.
13.
Static Precautions.
Where a metal detector is to be fitted on a conveyor or otherwise it necessary to bond the metal work
to ground.