Loma IQ3+ST, User Manual

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Installation
38
To minimise this possibility two detectors interfering with each other, they should not be closer
than a distance of not less than 16 times the smallest aperture dimension.
The presence of large amounts of metal such as from other conveyors or support frames in
the vicinity of the detectors may mean the distance will have to be larger.
Other sources of airborne interference such as from speed controllers, radio paging devices,
walkie-talkie radios and mobile telephones should not be operated in close proximity to the
detector.
Post Installation Problems

Spurious Triggering
The Loma range of detectors is the product of many years experience and development. They
are inherently reliable, provided that it is installed and set up correctly. Remember that the
detector can detect can detect moving metal anywhere within its metal free zone. This is up to
a distance of 3 times the smaller of the aperture dimensions away from the detector.
Connecting the Detector Head Electrical Supplies
Connection of an electrical supply to the metal detector head must only be carried out by
suitably trained and qualified personnel.
The supply voltage for the search head is indicated on the identification/rating label that is etched on
the back of the search head. Diagrams are included to provide details for connection of the head to a
suitable electrical supply and also for connection of the head to reject mechanisms, warning alarms
and other external devices.
The following guidelines should be observed:

The power source chosen should be clean and independent of any other equipment and
have a good ground / earth connection.

Power cabling must be rated at no less than 5A current carrying capability and be routed into
the control box area through one of the four gland entry holes provided.

Power cabling for a UL approved detector is 20 -16AWG fed from a locally positioned switch
or power breaker that is within easy reach of the operator. The breaker must be labelled as
the disconnecting device for the equipment. The cable tightening torque is 5.5in/lbs, routing
into the control box area as described above.
Do not use rigid conduit of any type. Rigid conduit can lead to vibration being transmitted to
the head, resulting in spurious triggering.
When refitting the head control panel cover the cover fixing screws must be tightened to 4Nm torque to
maintain the integrity of the IP69K rating for the head; preventing ingress of water or condensation.
The electrical supply is connected to the Mains Filter located inside the detector head front panel and
then distributed around the head via a MEANWELL Power Supply.