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Yale UniTrol UNI-50BC Series Installation Instructions page 4

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Unit Adjustment
Closing Speed Control
• Valve "S" controls Sweep Range.
• Valve "L" controls Latch Range.
Attention: Adjust Closing Speed
Time to between 4 to 7 seconds
from 90°. Use of the door by
handicapped, elderly or small
children may require greater
closing time. ADA code requires
that door take at least 3
seconds to close from 70° of
door opening to within 3"
(75mm) of the closed position.
Opening Door Control
• Backcheck ("BC") valve controls the hydraulic resistance to door opening in backcheck range.
NEVER close this valve completely – it is not to provide a positive stop.
Opening Cycle
Closing Power Control
Increase
Decrease
Adjust as required. Product is shipped
at mid range power setting.
Bracket Illustrations
Standard 6190 Bracket
Deep Reveal Option
Spacer Block
Clamps
2 Clamp Screws
No. 6191 Reinforcing Kit
Cover (Optional Cover 50P)
Thread in screws before mounting closer. Leave enough gap
between the head of the screw and the closer to slide the
cover on. Slide the cover over the closer and secure the
mounting screws after installation is complete.
To identify your model:
2=52BC
3 - 6=51
3=53BC
1- 4=51BF
4=54BC
5=55BC
6=56BC
Page 4
Figure 1
CLOSED
Closing Cycle
Figure 2
Figure 3
Increase
1/8"
Hex
Key
Decrease
Flush Partition Option
4 Bracket
Screws
No. 589L Bracket
Size
Date
3-6
BE
Code
Code
NOTE: By law the Americans with Disabilities Act (ADA) may
require that door closer installation comply with accessability
guidelines.
Slow
CAUTION:
1/8"
DO NOT BACK VALVES OUT OF
Hex
CLOSER OR A LEAK WILL
Key
Fast
Increase
1/8"
Hex
Key
Decrease
Power Adjustment Chart
PARALLEL ARM
DOOR
INSTALLATION
INT
51BF
EXT
INT
51
EXT
*18 -360° TURNS MAXIMUM AVAILABLE
Door Holder Option
Hold-Open
"On"
Turn 90°
To "Off"
Hold-Open option is found at the arm elbow. To select
hold-open "on" or hold-open "off" and to adjust the hold-
open force ... use screwdriver as illustrated.
An ASSA ABLOY Group brand
3000 Highway 74 East • Monroe, NC 28112
Tel: (800)-438-1951 • Fax: (800)-338-0965
www.yalecommercial.com
Yale ® is a registered trademark of Yale Security Inc., an ASSA ABLOY Group company.
Copyright © 1999, 2009, 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.
RESULT
"L"Valve
CAUTION:
DO NOT BACK VALVES OUT OF
CLOSER OR A LEAK WILL
RESULT
"BC" Valve
4
MAXIMUM DOOR SIZE
*
34"
36"
40"
(0.85 m)
(0.9 m)
(1 m)
(1.1 m)
2
2
3
NOT
8
9
RECOMMENDED
USE 51
3
5
7
5
7
10
Hold-Open Force
Press & Turn
To Decrease
To Increase
Force
"S"Valve
44"
48"
(1.2 m)
5
4
10
13
14
16
Figure 4
Force

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