7
SGH Series
230V, 50Hz
REVISION # 0001
DATE: 07/20/2020
DRIVE CHAIN ADJUSTMENT
NOTE: Use correct type, size and proper length of roller chain.
1. Adjust the drive chain by tilting or move the operator so that there is about 1/4” of slack when the
chain is depressed.
Note: The set screw included in the operator may be used for adjustment.
(See figure 1- S1 location for 1/2hp and 3/4hp; See figure 2 - T1, T2, T3, T4 for 1hp and 1½hp).
2. Once the drive chain has been tightened and the base leg screws have been set, and then tighten the
operator screws.
S1
Drive Chain
Door Sprocket
Drive Sprocket
1/4"
S1
Drive Chain
Door Sprocket
Drive Sprocket
1/4"
(Figure 1 for 1/2hp and 3/4hp)
Drive Chain
Door Sprocket
Drive Sprocket
1/4"
T1
T2
Drive Chain
Door Sprocket
Drive Sprocket
1/4"
T3
T4
(Figure 2 for 1hp and
1½
hp)