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PZ15X-XXX-XXX-AXX (en)
PARTS LIST / PZ15X-XXX-XXX-AXX AIR SECTION
PILOT VALVE
NOTE: DO NOT OVERTIGHTEN FASTENERS.
Torque (105 and 134) screws to 40 -50 in. lbs (4.5 - 5.6 Nm).
LUBRICATION / SEALANTS
ASSEMBLY TORQUE REQUIREMENTS
Apply Lubriplate FML-2 grease to “O” rings, “U” Cups &
mating parts.
Apply anti-seize compound to threads at assembly.
Apply PTFE tape to threads at assembly.
233
166
181
Notch
200
141
140
103
174
118
121
173
176
201
132
118
121
174
A replacement Major Valve Service Assembly is available separately, which includes the following:
637390-3 for models PZ15A-XXX-XXX: 105 (4), 111, 128, 132, 135, 136, 137, 138, 139, 140, 141,
166, 176 (2), 200 and 233.
637390-5 for models PZ15S-XXX-XXX: 105 (4), 111, 128, 132, 135, 136, 137, 138, 139, 140, 141,
166, 176 (2), 200 and 233.
167
173
168
169
170
171
172
101
105
MAJOR VALVE
138
111
139
137
135
134
134
133
43
128
136
126
Figure 3
TROUBLESHOOTING
Product discharged from air exhaust.
y
Check for diaphragm rupture.
y
Check tightness of (14) diaphragm screw.
Air bubbles in product discharge.
y
Check connections of suction plumbing.
y
Check “O” rings between intake manifold and inlet side
fluid caps.
y
Check tightness of (14) diaphragm screw.
Motor blows air or stalls.
y
Check (176) check valve for damage or wear.
y
Check for restrictions in valve / exhaust.
Low output volume.
y
Check air supply.
y
Check for plugged outlet hose.
y
Check for kinked (restrictive) outlet material hose.
y
Check for kinked (restrictive) or collapsed inlet material
hose.
y
Check for pump cavitation - suction pipe should be sized
at least as large as the inlet thread diameter of the pump
for proper flow if high viscosity fluids are being pumped.
Suction hose must be a non-collapsing type, capable of
pulling a high vacuum.
y
Check all joints on the inlet manifolds and suction con-
nections. These must be air tight.
y
Inspect the pump for solid objects lodged in the dia-
phragm chamber or the seat area.
