Service manual

REC 3829 6-2
The Air Bopper Reject should be mounted perpendicular to the conveying medium
and as close as possible (without touching) to the product and the conveying
medium. The air pressure required depends on product specifications and should
be balanced to obtain the desired reject action.
The wearable replaceable parts are listed in Table 6-2.
6.1.3 Air Jet Reject System
The Air Jet Reject System consists of two (2) OSHA approved air nozzles
mounted on an air manifold and controlled by a solenoid valve. When energized,
jets of air blow the product off the conveying medium. To avoid possible
contamination of the air supply, the system's air filter and regulator assembly does
not contain a lubricator. The air pressure required depends on product weight and
should be adjusted to obtain the desired reject action.
This reject system is designed for rigid product containers weighing up to 2.5 lbs.
(1.1 Kg) for chain conveyor applications and up to 1 lb. (0.5 Kg) for mylar belt
conveyor applications. The maximum allowable line speed for this reject system is
400 CPM, depending upon product size and weight.
The wearable replaceable parts are listed in Table 6-3.
6.1.4 Air Pusher Reject System
The Air Pusher Reject System consists of a stainless steel rectangular plate or an
anodized aluminum round plate operated by a double acting air cylinder and a 4-
way solenoid valve which provide air pressure for both the extending and the
retracting actions, of the reject plate. When energized, the Air Pusher plate
travels across the product path and pushes the product off the side of the
conveyor.
This reject system is designed for heavier products, 5 to 40 lbs. (2.3 to 28 Kg),
and slower line speeds (40 to 80 CPM). The round reject plate is used for rigid
product containers. The rectangular reject plate is used for collapsible product
containers.
The Air Pusher Reject should be positioned as close as possible to (without
touching) the product. It should be mounted as close as possible to the conveying
medium to prevent tipping the product when rejected. This height is generally
about the mid-section of the product container. The air pressure required
depends upon product specifications and should be balanced to obtain the desired
reject action.
The wearable replaceable parts are presented in Table 6-4.
6.1.5 Carrier Reject System
The Carrier Reject System represents the most gentle handling mechanism know
for rejection applications. A series of channels (from one to five) is built into the
carrier reject and signals from the checkweigher cause the carrier plaques to
divert product to the desired channel. This reject system operates at any speed
and handles products of any size and weight compatible with the electronics.