Graco QUANTM QTC Series Instructions Manual page 39

Torque to 50 ft-lb (68 N•m).
4
For QTC models: Torque to 110 in-lb (12 N•m).
5
For QTD,E,F,G models: Torque to 190–220 in-lb
(21–25 N•m).
13
15
F . 19: Tighten Standard Diaphragms (Industrial Model
IG
Shown)
Torque to 50 ft-lb (68 N•m).
4
13
15
F . 20: Tighten Standard Diaphragms (Hygienic Model
IG
Shown)
3A8947A
1
3
7
4
1
6a
4
4. For QT (Industrial) Models: Align the fluid covers
(3) to the motor (1). Install fasteners (6, 7, if
applicable) to hold the fluid covers (3) in place.
Hand-tighten the fasteners (6, 7, if applicable).
For QH (Hygienic) Models: Align the fluid covers
(3) to the motor (1). Install clamps (6a) to hold the
fluid covers (3) in place.
NOTE: To ensure proper spacing and alignment of
the manifolds, install fasteners (6, 7, if applicable) or
clamps (6a) loose enough to allow for fluid cover
movement before securing the fluid covers in place.
NOTE: If, after installing the first fluid cover, the
6
opposing diaphragm protrudes away from the
5
motor (1), leaving a gap between the motor and the
second fluid cover, do not try to force the
diaphragm into position. Instead, complete the
following steps to attach the second fluid cover:
a. Slightly loosen the fasteners (6, 7, if applicable)
5
or clamp (6a) on the installed fluid cover (3).
b. Use an applicable wrench to tighten the
fastener (15) on the diaphragm that protrudes
away from the motor (1) until the diaphragm
seats properly. Torque the fasteners (15) to
50 ft-lb (68 N•m).
NOTE: Do not hold the shaft in place while
tightening the diaphragm fastener.
c. Align the remaining fluid cover (3) to the
motor (1).
3
d. Install fasteners (6, 7, if applicable) or clamps
(6a) to hold the fluid cover (3) in place. Firmly
tighten the fasteners (6, 7, if applicable) or
clamps (6a).
5. For QT (Industrial) Models: Torque all fasteners (6,
7, if applicable). Follow Torque Fasteners, page
43.
6. Reassemble the check valves and manifolds as
explained in Reassemble Check Valves, page 33.
Repair
39