
NBC™ Flat Belt - IOM
P/N: 1118140
Rev: 07/29/2020
Page
39
of
129
NBC
A
IR
T
AKE
-
UP
1.18: 500
LB.-AT.
AND
250-AT30
D
RIVE
T
ENSIONING
(A
IR
T
AKE
-
UP
)
Step 1
With primary air pressure on and belt installed, slide air shutoff switch forward to engage the air
tension on the belt (shown). The belt tension will automatically adjust.
NOTE:
FOR 250-AT30 DRIVE ONLY
The 250-AT30 drive has a regulator prior to the air shut off slide sleeve.
The accumulation pressure from the conveyor filter regulator (40PSI) is reduced to 30 PSI.
The 250-AT30 drive air take-up pressure should never exceed 30 PSI.
500 LB.-AT Air Sleeve Valve Assembly