7
(only B
□
H[-D], B
□
S, B
□
H/T)
5.3 Installation
■
B
□
C[-D], B
□
N[-D], B
□
E, B
□
V, B
□
H[-D], B
□
S, B
□
H/T types
For installation, see [Exploded View] on the separate sheet and install in the reverse order of disassembly.
▪
Install the O ring in the groove the air chamber.
(only B
□
H[-D], B
□
S, B
□
H/T)
▪
Apply grease to the center rod, and insert it into the main
body.
▪
Keep the marking “OUTSIDE” to liquid end for CR, NBR,
EPDM, FKM diaphragms.
▪
Keep the convex side to the outside for TPEE, TPO
diaphragms.
▪
Tighten the center disk using the Accessory tool (special
tool: Part No.771244) for the BP
□
, BV
□
types.
(No coned disk springs and nuts are needed.)
Tightening torque for center rod
B
□
C, B
□
N, B
□
E, B
□
V
B
□
H, B
□
S, B
□
H/T
40 N•m
▪
Draw the center disk to one side, (cf. Fig.5.8) and install the
out chamber. Tighten the bolts temporarily.
▪
Draw the center disk to the opposite side, then turn the
diaphragm over (cf. Fig.5.8). And install the out chamber.
Tighten the bolts temporarily.
▪
After installation of the out chambers on both sides, place
the pump on a flat surface and stand the pump upright for
further assembly.
Tightening torque for out chamber.
B
□
C, B
□
N, B
□
E, B
□
V
10 N•m
NDP-20
B
□
H, B
□
S, B
□
H/T
13 N•m
B
□
C, B
□
N, B
□
E, B
□
V
10 N•m
NDP-25
NDP-32 B
□
H, B
□
S, B
□
H/T
20 N•m
<NOTE>
▪
Make sure there is no dust on the seal surface in order to
prevent seal damaged.
▪
Tighten the bolts that balance should be equal from both
side on diagonal line with even torque.
■
B
□
T[-D] types
For installation, see [Exploded View] on the separate sheet and install in the reverse order of disassembly.
▪
Install the O ring in the groove the air chamber.
▪
Apply grease to the center rod, and insert it into the main
body.
▪
Keep the convex side to the outside (cf. Fig.5.9).
▪
Put the O rings to both sides of the diaphragm. (cf. Fig.5.9).
▪
Tighten the center disk using the Accessory tool (special
tool: Part No. 771244) for the BPT, BVT types.
(No coned disk springs and nuts are needed.)
Tightening torque for center rod
40 N•m
▪
Tighten the out chamber temporarily at first.
▪
After installation of the out chambers on both sides, place
the pump on a flat surface and stand the pump upright for
further assembly.
Tightening torque for out chamber
NDP-20 13
N•m
NDP-25
NDP-32
20 N•m
<NOTE>
▪
Make sure there is no dust on the seal surface in order to prevent seal damaged.
▪
Replace the PTFE O ring by new one.
▪
Tighten the bolts that balance should be equal from both side on diagonal line with even torque.
