WIL-11140-E-03
1
WILDEN PUMP & ENGINEERING, LLC
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.
NOTE: All non lube-free air-operated pumps
must be lubricated. Wilden suggests an arctic 5
weight oil (ISO grade 15). Do no over lubricate
pump. Excess lubrication will reduce pump
performance.
TEMPERATURE LIMITS:
Neoprene
–18°C to 93°C
0°F to 200°F
Buna-N
–12°C to 82°C
10°F to 180°F
EPDM
–51°C to 138°C
–60°F to 280°F
Viton
®
–40°C
to
177°C
–40°F
to
350°F
Sanifl ex™
–29°C to 104°C
–20°F to 220°F
Polytetrafl uoroethylene (PTFE)
4°C to 104°C
40°F to 220°F
Polyurethane –12°C to 66°C
10°F to 150°F
NOTE: Not all materials are available for all
models. Refer to Section 2 for material options
for your pump.
CAUTION:
When choosing pump materials, be
sure to check the temperature limits for all wetted
components. Example: Viton
®
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 upon mechanical stress only. Certain
chemicals will signifi cantly reduce maximum
safe operating temperatures. Consult Chemical
Resistance Guide for chemical compatibility and
temperature limits.
WARNING:
Prevention of static sparking — If
static sparking occurs, fi re or explosion could
result. Pump, valves and containers must be
grounded to a proper grounding point when
handling fl ammable fl uids and whenever
discharge of static electricity is a hazard.
CAUTION: Do no exceed 8.6 bar (125 psig) air
supply pressure [3.4 bar (50 psig) on UL Listed
pumps].
CAUTION:
The process fl uid and cleaning fl uids
must be chemically compatible with all wetted
pump components. Consult Chemical Resistance
Guide.
CAUTION:
Pumps should be thoroughly fl ushed
before installing into process lines. FDA and
USDA approved pumps should be cleaned and/
or sanitized before being used.
CAUTION:
Always wear safety glasses and
appropriate safety equipment when operating
pump. If diaphragm rupture occurs, material
being pumped may be forced out air exhaust.
CAUTION:
Before any maintenance or repair is
attempted, the compressed air line to the pump
should be disconnected and all air pressure
allowed to bleed from pump. Disconnect all
intake, discharge and air lines. Drain the pump
by turning it upside down and allowing any fl uid
to fl ow into a suitable container.
CAUTION:
Blow out air line for 10 to 20 seconds
before attaching to pump to make sure all pipeline
debris is clear. Use an in-line air fi lter. A 5µ (micron)
air fi lter is recommended.
NOTE:
When installing PTFE diaphragms, it is
important to tighten outer pistons simultaneously
(turning in opposite directions) to ensure tight fi t.
(See torque specifi cations in Section 7.)
NOTE:
Cast Iron PTFE-fi tted 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.
CAUTION: When removing the end cap using
compressed air, the air valve end cap may come
out with considerable force. Hand protection
such as a padded glove or rag should be used to
capture the end cap.
NOTE:
Before starting disassembly, mark a line
from each liquid chamber to its corresponding air
chamber. This line will assist in proper alignment
during reassembly.
CAUTION:
Tighten all hardware prior to installation.
S e c t i o n 1
C A U T I O N S — R E A D F I R S T !
