Loma IQ3+, User Manual

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Maintenance
231
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Check the correct operation of the reject system. Advice can be found in the Good Practice
section.
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For systems with reject confirm and bin full check their correct operation. Bin full will operate if
the sensor is blocked for > 5 seconds.
Air Regulator Unit Maintenance
With the exception of systems fitted with Air Blast or Stop-On-Detect or electrically driven rejects the
compressed air supply pressure to the fitted reject device is fed through an air regulator unit. The
particular model of regulator may vary according to the specification of the system. Each type will
have a pressure adjustment control air input and output fittings a pressure gauge and water trap.
Adjustment of the air pressure is normally carried out by pulling up the adjustment knob to release the
lock and by turning the control clock or anti-clockwise the pressure can be adjusted.
Removal of water from the water trap bottle is carried out by operation of a rotating knob or by
pressing a button. Either way the control will be located at the bottom of the water trap bottle. Water
should be removed regularly.
The correct setting of the air pressure can be found in the individual system specifications in the
Technical Specifications chapter.
Conveyor Belt Maintenance
Plastic Modular Belt Section Replacement
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If product guides are fitted to the conveyor, unscrew the retaining screws and remove the
guides.
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Clamp the belt either side of one of the plastic hinge pins that are used to join the sections of
the belt together that require changing.
If you do not clamp the belt it will roll off the loose sprockets when you remove the pin.
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Carefully slide out the plastic hinge pins and remove the section of belt to be replaced.
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Carefully interlock the new section of the belt. Make sure the belt is located on the drive
sprocket and correctly engage with the other ‘floating’ sprockets.
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Carefully slide the plastic hinge rods through the interlocked sections of belt.
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If product guides were removed from the conveyor, refit them in position and tighten the
securing screws.
Setting the Belt Tension and Tracking
If the belt slips or moves during normal operation, check the rollers are clean and free from debris and
greasy elements then follow the steps below.
Adjusting the hexagonal lock nuts on the studs of the four hanger bearings at the ends of the
conveyor facilitates belt tracking and tension adjustment for this type of conveyor. Do not over-tension
the belt as this may cause premature wear to the bearings.
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Main belt tensioning is controlled by the hanger bearings at the drive end of the conveyor. This
is factory set and must not be adjusted on site.
Tracking and minor tension adjustment is controlled by the hanger bearings at the idle end of
the conveyor. Increasing the tension on the right-hand side of the belt will cause the belt to
move to the left. A decrease in tension on the right will cause the belt to move to the right.
Adjust until the belt track is central.