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Page 8 of 8 6661HX-XXX-C (en)
PN 97999-1236
TROUBLE SHOOTING
Product discharged from exhaust outlet.
Check for diaphragm rupture.
Check tightness of (14) diaphragm screw.
Gas bubbles in product discharge.
Check connections of suction plumbing.
Check “O” rings between intake manifold and uid caps.
Check tightness of (14) diaphragm screw.
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Low output volume, erratic ow or no ow.
Check gas supply.
Check for plugged outlet hose.
Check for kinked (restrictive) outlet material hose.
Check for kinked (restrictive) or collapsed inlet material
hose.
Check for pump cavitation - suction pipe should be sized
at least as large as the inlet thread diameter of the pump
for proper ow if high viscosity uids are being pumped.
Suction hose must be a non-collapsing type, capable of
pulling a high vacuum.
Check all joints on the intake manifolds and suction con-
nections. These must be gas tight.
Inspect the pump for solid objects lodged in the dia-
phragm chamber or the seat area.
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DIMENSIONAL DATA
Dimensions shown are for reference only, they are displayed in inches and millimeters (mm).
Figure 5
DIMENSIONS
A - 8-1/2” (215.9 mm) E - 8” (203.2 mm) H - 6-1/4” (158.8 mm)
B - 11-9/16” (293.7 mm) F - 6-1/2” (165.1 mm) J - 7-5/16" (185.7 mm)
C - 4” (101.6 mm) G - 12-1/2” (317.5 mm) K - 7/16” (11.1 mm)
D - 1-1/4” (31.8 mm)
A
B
C
D
E
G
H
J
F
K
(inlet) L
L
(outlet)
Gas inlet 1/4 - 18 N.P.T.F. - 1
Pump Model “L” Material Inlet / Outlet
6661H0-1C9-C 1 - 11-1/2 N.P.T.F. - 1