WIL-11500-E-11
4
PS420/430 Bolted Metal
SECTION 1
WARNING:
Always wear safety glasses when operating
a pump to avoid eye injury. If diaphragm rupture occurs,
material being pumped may be forced out of the air
exhaust.
CAUTION:
Do not apply compressed air to the exhaust
port – pump will not function.
CAUTION:
Do not over-lubricate air supply– excess
lubrication will reduce pump performance. Pump is pre-
lubed.
TEMPERATURE LIMITS:
Acetal
-29°C to 82°C
-20°F to 180°F
Buna-N
-12°C to 82°C
10°F to 180°F
Geolast
®
-40°C to 82°C
-40°F to 180°F
Neoprene
-18°C to 93°C
0°F to 200°F
Nordel EPDM
-51°C to 138°C
-60°F to 280°F
Nylon
-18°C to 93°C
0°F to 200°F
PFA
-7°C to 107°C
45°F to 225°F
Polypropylene
0°C to 79°C
32°F to 175°F
Polyurethane
-12°C to 66°C
10°F to 150°F
PVDF
-12°C to 107°C
10°F to 225°F
Saniflex
-29°C to 104°C
-20°F to 220°F
SIPD PTFE with EPDM-backed
4°C to 137°C
40°F to 280°F
SIPD PTFE with Neoprene-backed
4°C to 93°C
40°F to 200°F
PTFE*
4°C to 104°C
40°F to 220°F
FKM
-40°C to 177°C
-40°F to 350°F
Wil-Flex
-40°C to 107°C
-40°F to 225°F
*4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models
only.
NOTE:
Not all materials are available for all models. See “Wilden
Pump Designation System” for material options for your pump.
CAUTION:
When choosing pump materials, be sure to
check the temperature limits for all wetted components.
Example: FKM has a maximum limit of 177°C (350°F),
but polypropylene has a maximum limit of only 79°C
(175°F).
CAUTION:
Maximum temperature limits are based on
mechanical stress only. Certain chemicals will reduce
maximum safe operating temperatures significantly.
Consult the Chemical Resistance Guide for chemical
compatibility and temperature limits.
CAUTION:
All Wilden pumps are capable of passing
solids. Use a strainer on the pump intake to ensure that
the pump's rated solids capacity is not exceeded.
CAUTION:
Do not exceed 8.6 bar (125 psig) air supply
pressure.
CAUTION:
Do not exceed 82°C (180°F) air inlet
temperature for all models.
CAUTION:
The process fluid and cleaning fluids must be
compatible chemically with all wetted pump components.
CAUTION:
Before attempting any maintenance or repair,
disconnect the compressed air line to the pump and allow
all air pressure to bleed from the pump. Disconnect all
intake, discharge, and air lines. Drain the pump by turning
it upside down and allowing any fluid to flow into a
suitable container. Be aware of any hazardous effects of
contact with your process fluid.
CAUTION:
Thoroughly flush pumps before installing
them into process lines. Clean and/or sanitize FDA- and
USDA- approved pumps before using them.
CAUTION:
Before attaching the air line to the pump, blow
out the air line for 10 to 20 seconds to make sure all
pipeline debris is clear. Use an in-line air filter. A 5µ
(micron) air filter is recommended.
CAUTION:
Pro-Flo pumps cannot be used in submersible
applications. Pro-Flo SHIFT is available in both single-
point exhaust (submersible) and standard (non-
submersible) options. Do not use standard Pro-Flo SHIFT
models in submersible applications.
CAUTION:
Before installation, tighten all hardware.
NOTE:
Materials of construction and elastomer material
may influence suction lift parameters. Please refer to
“Performance” for specifics.
NOTE:
When installing PTFE diaphragms, it is important
to tighten outer pistons simultaneously (turning in
opposite directions) to ensure tight fit. (See “Maximum
Torque Specifications”).
NOTE:
Some PTFE-fitted pumps come standard from the
factory with expanded PTFE gaskets installed in the
diaphragm bead of the liquid chamber. PTFE gaskets
cannot be re-used.
NOTE:
In the event of a power failure, close the shut-off
valve if you do not want the pump to restart when the
power returns.
NOTE:
The Safety Supplement document is a part of the
manual. Please refer to the Safety Supplement document
for a complete list of safety considerations including
considerations for safe operation and maintenance of
pumps marked for ATEX environments before starting the
pump.
WARNING:
This product can expose you to chemicals
including Nickel, Chromium, Cadmium, or Cobalt, which
are known to the State of California to cause cancer
and/or birth defects or other reproductive harm.
For more information, go to www.P65Warnings.ca.gov.
PRECAUTIONS – READ FIRST!