6
(Figure A.4)
(Figure A.5)
(Figure A.3)
A. PARALLEL ARM INSTALLATION FOR PUSH-SIDE MOUNT
6Set main arm on top closer pinion,
PARALLEL to door slab. Use wrench to
rotate bottom closer pinion approximately
45° towards hinge-side. As bottom closer
pinion is rotated, main arm will slide onto top
pinion. Use the 'L' and 'R' marked on main
arm to determine direction of swing. Main
arm will point away from hinge-side. Refer to
Figure A.3 for illustration of handing. Tightly
secure using (1) 3⁄4" hex screw with lock
washer. (Figure A.3 & A.4)
8For QDC 311, remove the arm shoe from the
forearm. Install and secure the forearm to
the parallel bracket pin using screw provided.
Open door to allow the forearm to slide into
the main arm. Loosely fasten the forearm
to the main arm using (1) 1⁄2" hex screw with
washer. Close door, rotate main arm until 1"
away from door slab. Tighten hex screw to
secure forearm in place.
For QDC 312, Install and secure the arm
assembly to the parallel bracket pin using
screw provided. (For LEFT hand door,
position the hold open nut down. For RIGHT
hand door, position the hold open nut up.)
Open door to allow the main arm to slide into
the arm assembly. Close door, rotate main
arm until 1" away from door slab. Tighten set
screw to secure the arm assembly in place.
(Figure A.5)
7
8Adjust door closing speed and power. Refer
to Section D, 'Closer Adjustments' for
instruction.
8
9Snap the pinion cap cover onto the bottom
closer pin or install the QDC 312 optional
cover with screw provided.
Option A – Regular Arm Installation
Top Jamb Installation
Option B –
Machine X2
Machine X4
Machine X4
Wood X2
Wood X4
Wood X4
Optional
cover
(a)
screw.
(c)
(e)
(b)
(d)
(f)
(g) (h)
(i) (j)
X1
X1
X1
X1
L
R
S
S
R
L
L
R
S
S
R
L
S
R
L
Main Arm Installation
(Left Hand Out-Swing Shown)
Option A – Regular Arm Installation
Top Jamb Installation
Option B –
Machine X2
Machine X4
Machine X4
Wood X2
Wood X4
Wood X4
Optional
cover
(a)
screw.
(c)
(e)
(b)
(d)
(f)
(g) (h)
(i) (j)
X1
X1
X1
X1
L
R
S
LH Out-Swing RH Out-Swing
Option A – Regular Arm Installation
Top Jamb Installation
Option B –
Machine X2
Machine X4
Machine X4
Wood X2
Wood X4
Wood X4
Optional
cover
(a)
screw.
(c)
(e)
(b)
(d)
(f)
(g) (h)
(i) (j)
X1
X1
X1
X1
L
R
S
S
R
L
Top view of main
arm placed parallel
to door slab
Hinge-Side
Hinge-Side
Set main arm on top of closer pin,
PARALLEL to door slab and away from hinge-side
CORRECT Main Arm Installation
CORRECT
Main arm is installed
parallel to slab. Closer is
loaded under pressure, will
fully close door slab.
NOT CORRECT
Main arm is installed
angled away from slab.
Closer has little pressure,
will not fully close door
slab.
Option A – Regular Arm Installation
Top Jamb Installation
Option B –
Machine X2
Machine X4
Machine X4
Wood X2
Wood X4
Wood X4
Optional
cover
(a)
screw.
(c)
(e)
(b)
(d)
(f)
(g) (h)
(i) (j)
X1
X1
X1
X1
L
R
S
Option A – Regular Arm Installation
Top Jamb Installation
Option B –
Machine X2
Machine X4
Machine X4
Wood X2
Wood X4
Wood X4
Optional
cover
(a)
screw.
(c)
(e)
(b)
(d)
(f)
(g) (h)
(i) (j)
X1
X1
X1
X1
L
R
S
S
R
L
L
R
S
Door Slab Door Slab
Closer with parallel arm installation is
COMPLETE.
QDC 312 Hold Open Arm Assembly
to Bracket
LEFT Hand
Position nut down
RIGHT Hand
Position nut up
Bracket Bracket
Arm Assembly Arm Assembly
