Copyright © 1997, 2014 Yale Security Inc., an ASSA ABLOY Group company. All rights reserved.
Reproduction in whole or in part without the express written permission of Yale Security Inc. is prohibited.
80-9377-0551-020 (05-14)
ASSA ABLOY
5
Closer Adjustments
Closing Power Control
Figure 1
Delayed Action
Backcheck
Sweep
Latch
Closing Controls
Opening Controls
Closing Power
7740 Models
come in five different sizes (2
through 6); each power size can be increased
by 50%. Adjust as required.
See Figure 1.
7540 Models
are fully adjustable. For proper
sizing see
Power Adjustment Chart.
To adjust
closer power,
see Figure 1.
Increase or
decrease power as necessary.
Closing Cycle
(see illustrations above).
Valve
"L"
controls door speed in
Latch Range.
Valve
"S"
(optional) Delayed Action Closer only.
Controls door speed in
Sweep Range
.
Valve
"SD"
controls door speed in
Sweep
Range
for
Standard Closer or
Delay Range
for Delayed Action Closer
Use 1/8" hex-key furnished and adjust all
valves as shown in
Figure 2.
Attention:
Adjust closing speed to between 4 to 7
seconds from 90°. Use of door by handicapped,
elderly or small children may require greater
closing time.
Opening Cycle
(see illustration above).
Valve
"B"
cushions (slows) door opening in the
Backcheck Range.
NOTE: Never close this valve completely or
damage to closer may occur.
Valve
"P"
allows "backcheck" to begin later
in the opening cycle when required.
Closing Speed Controls
Figure 2
"L"
(Latch)
"S"
(Sweep) Only supplied with
Delayed Action Feature
"S/D"
(Delay Range)
"B"
(Backcheck)-NEVER
close completely
"B"
(Backcheck)-NEVER
close completely
"P"
(Normally shipped closed)
slower
faster
stronger
weaker
Caution:
Do not back valves out
of closer or a leak will
result.
Standard Closer
Only
Delayed Action
Closer Only
OR
"S/D"
(Sweep Range)
"P"
(Normally shipped closed)
"L"
(Latch)
1/8" Hex Key
3000 Highway 74 East • Monroe, NC 28112
Tel: (877)-
• Fax: (800)-338-0965
974-2255
www.nor tondoorcontrols.com
ASSA ABLOY
Install closer per instructions
with the proper pre-load
applied to the arm then
adjust spring power. The
power adjustment will not
work properly if the closer
spring is not pre-loaded.
To increase power, use 11/16"
wrench to turn power
adjustment nut clockwise.
To decrease power, turn nut
counter clockwise.
DO NOT use a power drill or driver to turn
adjustment nut. This will damage closer
and void warranty.
"Spring Power
Adjustment Nut"
+
-
NOTE
: Maximum of
15 turns (360°) of
Power Adjustment
Nut. Closer is
shipped set at
lowest power
setting.
Power Adjustment Chart
Full Clockwise Turns of Closer Power Adjustment Nut
Interior Door
Exterior Door
0
2
2
5
5
Door Size
Inches
(mm)
28-32
(0.07-0.80)
37-42
(0.95-1.05)
43-48
(1.10-1.20)
33-36
(0.85-0.90)
8
8
11
7540ST
PS7540ST
