A7395C
2
1/8” HEX SOCKET
WRENCH
BACKCHECK
RANGE
CLOSING SPEED
RANGE
LATCHING SPEED
RANGE
Adjust Spring Power According to Chart
Turn the spring adjusting nut clockwise the required number of turns to match door width as indicated in chart. Where strong drafts exist, increase spring power
as needed. 351 Series door closers leave the factory with the spring adjustment set at eight (8) turns
D
Clockwise Turns
of Adjusting Nut
8
8
12
16
Maximum adjustment is
approximately 20 turns.
Do not forcibly extend
adjustment beyond limits.
5/8 " Adjustment Nut
Adjustment Instructions
E
Minimum recommended door closing time is 6 seconds for doors opened to 90 degrees.
Use 1/8" hex (Allen) wrench to adjust valves as needed.
Closing and latching speeds:
Turn valves clockwise to slow down or counterclockwise to speed up door movement.
Backcheck:
To regulate the intensity of backcheck action, turn valve clockwise to increase or counterclockwise to decrease checking.
Caution: Set valve for slight cushioning effect. Closer can be damaged if the checking action is too abrupt. Never use the backcheck
as a door stop. Always use a door stop to stop the door.
Backcheck
valve
Closing
speed
valve
Latching
speed
valve
9-2960 Without Electronics not shown
2960
1. Assemble (3) short cover screws
(#8-32 x 5/16") into bottom of
closer body and cover mounting
bracket, approx. one turn
CAUTION:
Avoid
interference with
electronics and wires
during installation of cover
2. Slide cover onto backplate and
closer assembly. Secure with
three cover screws
Adjust closers as directed
in steps D and E
To Install Cover
F
12-2960
On/Off
Switch
A7395C.indd 2
10/29/18 12:44 PM
