Page 8 of 8 6662AX-X-C
PN 97999-69
TROUBLE SHOOTING
Product discharged from exhaust outlet.
Check for diaphragm rupture.
Check tightness of diaphragm nut.
Air bubbles in product discharge.
Check connections of suction plumbing.
Check “O” rings between intake manifold and  uid caps.
Check tightness of diaphragm nut.
y
y
y
y
y
Low output volume, erratic  ow, or no  ow.
Check air 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 inlet manifolds and suction con-
nections. These must be air tight.
Inspect the pump for solid objects lodged in the dia-
phragm chamber or the seat area.
y
y
y
y
y
y
y
DIMENSIONAL DATA
All dimensions are given in inches and millimeters (mm).
Air
Inlet
1/2 14 N.P.T.F.
Outlet
Inlet
2’’ A.N.S.I. Flange
2’’ A.N.S.I. Flange
Air exhaust thread 3/4 -14 N.P.T.
19-23/32" (501 mm)
11-15/16"" (302 mm)
11-9/16" (294 mm)
8-11/16" (220 mm)
10-1/32" (255 mm)
4.773” (121 mm)
5/8" (16 mm)
14-15/16" (379 mm)
21-15/32"
(545 mm)
24-5/8"
(625 mm)
1-1/32"
(26 mm)
9-5/8"
(244 mm)
3-9/32"
(83 mm)
3-3/8"
(86 mm)
Bolt Circle