13
14
12
80-9350-2502-010 (05-12)
50 Series
Non Hold Open Door Closers —
Parallel Arm
11
Latch
Sweep
Backcheck
6
8
7
9
10
Spring Power Adjust
51(BF) only
(If necessary)
PA
BC
S
L
S
L
1-1/2
(38)
— 4 —
or
(2)
Assemble Arm
Arm Screw
Open Valves
Caution:
Don't completely
close valve
Pinion Cap
or Optional Cover
L
Y
S
Z
R
L
Y
S
Z
R
Left Hand
Door
Right Hand
Door
or
B
A
Flat
Flat
Slower
-
Faster
+
Weaker
-
Stronger
+
Stronger
+
Weaker
-
Slower
-
Faster
+
Caution:
Do Not Back
Valve Out
Completely
