4
Closer Valve Adjustment
Check closing time, and adjust closer if needed.
CAUTION
Opening the regulation valves (described below) too
far may result in the closer leaking oil! This may result
in closer and property damage, and personal injury.
FOLLOW ALL INSTRUCTIONS CAREFULLY.
L
Valve must be closed CW to seat, never more than 3 turns
CCW from seated position. Adjust the valves in 1/4 turn
increments or less at a time. DO NOT TURN MORE THAN
3 FULL ROTATIONS. THIS WILL CAUSE THE CLOSER TO
LEAK OIL!
L
DO NOT ADJUST THE LATCH SPEED IF THE DOOR DOES
NOT LATCH. If this occurs, adjust the spring force.
1. Open the door to 90°, measure how long the door takes to
close and latch. A typical closing time is 5 to 7 seconds, evenly
divided between main speed and latch speed.
2. If the closing time needs to be adjusted, use a 3/32” hex
wrench to adjust the closer valves described below.
a. Backcheck (BC)- this controls door s peed opening as the
door angle approaches 90°.
Do not use as a door stop.
b. Main Speed (MD)- this controls main speed for standard
cylinders and the delay speed for delay (DA) cylinders.
c. DA Main Speed (M)- this controls the main speed for DA
cylinders.
This valve is present on DA cylinders only.
d. Latch Speed (L)- this controls door speed during the last
few degrees of door closing.
e. PA Selector (P)- this needs to be turned in completely for
Parallel Arm (PA) mounting.
3. Turn the valves clockwise to decrease door speed, and
counterclockwise to increase door speed. The latch speed and
main speed should be adjusted together.
M
P
L
MD
BC
BC
L
M
P
BC
= Backcheck valve
M MD
= Main speed valve
L
= Latch speed valve
P
= PA selector valve
Optional Hold Open Arms
To adjust Optional Hold-open arm:
1. Loosen hold open nut.
2. Open door to 5° less than desired hold position
and tighten hold open nut securely.
Screw Type
Screw Pack
Picture
Cylinder
Mounting
PA Shoe
Mounting
5th Hole Mounting
(PA Shoe Only)
Wood (for wood doors & frames)
Wood &
Machine
Screw Pack
(WMS)
4 @ 2
M\,
"
2 @ 1
Z\x
”
1 @ 2"
Machine (for metal doors & frames)
Requires hole drilling & tapping; best
hold.
Standard
4 @ 2
Z\v
"
4 @
B\,
”
1 @ 1
Z\x
”
SRT - Self Reaming & Tapping (for
metal doors & frames)
Standard
4 @ 3"
4 @ 1
Z\x
”
1 @ 2"
Screw Type
Screw Pack
Picture
Notes
Fifth Hole Spacer Standard
Arm Screw
Standard
Pinion Attachment
Screw
Standard
Z\v
-20 for
attachment of the
arm (see step 6).
Thru Bolt
Order TB
Screw pack
1
>\cx
” or
1
ZM\cx
” or
1
XZ\cx
”
