Loma IQ2 User Manual page 49

32
Using the metal
detector
Regular in-line detector sensitivity testing
It is important to maintain regular and accurate in-line sensitivity testing of the metal detector
using the same techniques as the initial sensitivity testing. This should include tests to
ensure that the reject systems are effective.
Regular testing should be conducted using the same techniques as initial sensitivity testing.
This should include ensuring the reject systems are effective, including reject confirmation
systems if fitted.
The records generated by this system should be maintained in a safe and easily retrievable
place for a time period suited to your particular quality regime. Factors which may be of help
in determining a suitable retention period might be:
• The anticipated life of your product within normal consumer usage
• Any statutory time period in which enforcement authorities have to institute legal
proceedings after notification of a complaint.
Handling rejected products
A reject collection device, such as a reject bin, will typically be used to prevent
contaminating products from being mixed with uncontaminated products. Any rejected
product should be kept segregated for later examination. Never let your bin overfill.
It is advisable to examine rejected product with a view to identifying any contamination. The
information gained can be used to implement preventative measures, thus improving further
the product quality. Multiple contaminants may be a clue to machinery break-up,
identification can pinpoint the source, and effective maintenance can then be conducted.
2
The IQ Metal Detector can also be helpful when examining contaminated products. For
example, you can alter the orientation of the product and pass it back through the metal
detector to help identify its position. Alternatively, you can subdivide the product into a
number of smaller samples and then use the metal detector to identify which sample
contains the contaminant.
7031