GSI Group 1200 Bu/Hr, Owner'S Manual, Page: 13 / 76

PNEG-1355 4" & 5" Air Systems 13
5. INSTALLATION
Air System Installation Instructions
1. Determine the most convenient location for the airlock and blower. Take into consideration
the direction of the prevailing winds. It is important to locate the blower in as clean an
environment as possible. This greatly reduces the maintenance requirements on the air
filter system. When the distance between the airlock and blower is over 10 feet, it is best to
use galvanized pipe with short flex hose on the ends to couple the units together to keep
airflow restrictions to a minimum.
2. The noise level of the blower unit can be reduced by placing the unit behind a wall, barrier,
or in a small building. If this is done, make sure that the building has adequate ventilation
for both air intake and cooling of the blower and motor.
3. The grain discharge chute on the airlock is assembled at the factory so that grain movement
is at 90° to the length of the skid. This orientation can be changed by removing the mounting
hardware at the base of the airlock and rotating the discharge chute to the preferred
direction. Be sure to keep the gasket in place between the skid and the discharge chute.
Note that the airlock itself is sealed to the skid surface and does not need to be moved to
redirect the discharge chute.
Note: A minimum of 10 feet is needed between the airlock discharge and the first elbow
in the system.
4. Determine the best routing of the galvanized steel pipe from the airlock to the storage areas.
Use galvanized elbows for changing the grain direction. This will give better performance
and longer life than flexhose.
5. Bolt the tube mounting brackets to the desired location using at least two (2) mounting
brackets on the vertical wall and two (2) on the roof of the grain bin. The mounting brackets
can be formed to match existing hole patterns in the bin.
6. Determine the number and degree of arc required in the elbows. The 90° and 60° elbows
are standard - different lengths of arc can be cut from these standard elbows.
(See Page 18) .
Note: A minimum of eight (8) feet between elbows is required for proper operation.
7. Cut the steel tubing to the required length and fasten it together with compression
couplings. The ends must be cut square to fit properly. Make sure that the stainless steel
gasket protecting sleeve is placed over the joint before tightening the coupler. Tighten the
three bolts on the coupler evenly or until the coupler flanges butt together
(See Page 74).
8. The steel tubing can be laid underground, on top of the ground or placed on blocks. If placed
on blocks, the tubing must be supported every 15 feet. If placed underground, the tube
should enter and exit the ground at a 45° angle and be coated with a protective tar to
prevent corrosion.