Adjustments - Assa Abloy NORTON RIXSON D6051 Series Installation Instructions Manual

Adjustments

A. Adjust mechanical closer features on each operator.
NOTES:
y Make necessary mechanical adjustments so unit
functions as a standard surface mounted door
closer before adjusting spring force, applying
power, adding accessories or making electrical/
programming adjustments.
y Valve location S/D is not adjustable.
y Chain protection plate cutouts allow access to
valves. Use hex wrench to make adjustments.
(Figure 26)
Do not remove valves from closer. Hydraulic
oil will escape.
1. Closing Speed Controls (Figure 26)
y Valve "S" controls Sweep Range from full
open to 10°.
y Valve "L" controls Latch Range from 10° to
closed.
2. Opening Cycle (Figure 26)
y Valve "B" controls strength of cushioning in
Backcheck Range.
NOTE: NEVER close Backcheck valve completely
– it is not to provide a positive stop.
y Valve "P" adjusts angle that backcheck is
felt in open cycle. Factory preset is typically
acceptable.
B. Adjust spring force on each operator.
NOTES:
y The amount of effort to manually open or close a door
is called force and is controlled by the operator's closer
spring.
y Make necessary mechanical adjustments described in
"A" above.
y A closer set to ADA required 5 lbs opening force may
not be strong enough to close door due to latching
hardware, air pressure, or frame issues.
1. Remove the small torx head screw from end cap.
2. Slide the End Cap Access door, exposing the spring
adjustment nut.
3. Using a ratchet with an 11/16" socket, turn the nut
in end of closer body tube clockwise to increase or
counterclockwise to decrease force until the desired
setting is reached. (Figure 27)
4. Once the desired force has been set:
‒ Remove the ratchet.
‒ Slide the end cap access door closed.
‒ Replace the end cap screw
12
D6011/D6051 Series Double Unit Pull Side Power Operator
Copyright © 2019, 2020, 2023, ASSA ABLOY Accessories and Door Controls Group, Inc. All rights reserved. Reproduction in whole
or in part without the express written permission of ASSA ABLOY Accessories and Door Controls Group, Inc. is prohibited.
Approved 2023-01-24
"L"
Latch
Slower
1/8"
Hex
Key
Faster
0°
10°
"P"
Back check
Position
1/8"
Hex
Key
90°
75°
View of Left Hand operator from ceiling looking down
Figure 26
View of Right Side Operator
Figure 27
"S"
Sweep
Slower
1/8"
Hex
Key
Faster
10°
Chain Protection Plate
"B"
Back check
Stronger
1/8"
Hex
Key
Weaker
75°
End Cap Access Door
Spring Force
Adjustment Nut
80-9360-1029-020 Rev 6 01/23