PSG Dover WILDEN PRO-FLO P.025, Engineering, Operation & Maintenance, Page: 4 / 28

WIL-10090-E-08
Wilden
®
4
Precautions - Read First!
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 1 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
1
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. 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: 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 upon
mechanical stress only. Certain chemicals will significantly
reduce maximum safe operating temperatures. Consult
engineering guide for chemical compatibility and
temperature limits.
CAUTION: Always wear safety glasses when operating
pump. If diaphragm rupture occurs, material being
pumped may be forced out air exhaust.
WARNING: Prevent static sparking — If static sparking
occurs, fire or explosion could result. Pump, valves, and
containers must be properly grounded when handling
flammable fluids and whenever discharge of static
electricity is a hazard.
CAUTION: Do not exceed 8 .6 bar (125 psig) air
supply pressure.
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 fluid to flow into a suitable container.
CAUTION: Blow out air line for 10 to 20 seconds before
attaching to pump to make sure all pipe line debris is
clear. Use an in-line air filter. A 5µ (micron) air filter
is recommended.
NOTE: Tighten clamp bands and retainers prior to
installation. Fittings may loosen during transportation.
NOTE : When installing PTFE diaphragms, it is
important to tighten outer pistons simultaneously
(turning in opposite directions) to ensure tight fit.
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: Verify the chemical compatibility of the
process and cleaning fluid to the pump’s component
materials in the Chemical Resistance Guide.
NOTE: Plastic series pumps are made of virgin
plastic and are not UV-stabilized. Direct sunlight
for prolonged periods can cause deterioration
of plastics.
CAUTION: The P .025 pump is not submersible.
Section 1