Dover WILDEN A1 Series, Инженерия, эксплуатация и обслуживание, Страница: 5 / 28

WIL-10040-E-02
3
WILDEN PUMP & ENGINEERING, LLC
SECTION 3
WILDEN MODEL A1 PLASTIC
CAUTIONS – READ FIRST!
TEMPERATURE LIMITS:
Polypropylene 0°C to 79°C 32°F to 175°F
PVDF –12°C to 107°C 10°F to 225°F
Neoprene –17.8°C to 93.3°C 0°F to 200°F
Buna-N –12.2°C to 82.2°C 10°F to 180°F
Viton ® –40°C to 176.7°C –40°F to 350°F
Wil-Flex™ –40°C to 107.2°C –40°F to 225°F
Polyurethane 12.2°C to 65.6°C 10°F to 150°F
Saniflex™ –28.9°C to 104.4°C –20°F to 220°F
Teflon ® PTFE 4.4°C to 104.4°C 40°F to 220°F
CAUTION: When choosing pump materials, be sure to
check the temperature limits for all wetted components.
Example: Viton
® has a maximum limit of 176.7°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 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: Prevention of 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: Plastic series pumps are made of virgin plas-
tic and are not UV stabilized. Direct sunlight for
prolonged periods can cause deterioration of plastics.
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 other fasteners prior to
installation. Fittings may loosen during transportation.
NOTE: When installing Teflon ® diaphragms, it is impor-
tant 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 (see E4).
CAUTION: Only explosion proof (NEMA 7) solenoid
valves should be used in areas where explosion proof
equipment is required.
CAUTION: Do not lubricate lube-free pumps.
NOTE: A1 Plastic Teflon ® -fitted pumps come standard
from the factory with expanded Teflon ® gaskets. (See
Gasket Kit Installation in Section 8C.)
CAUTION: Do not over-tighten the air inlet reducer
bushing. Too much torque on the reducer bushing may
cause damage. Do not exceed .9 N-m (8 in.-lbs.).
CAUTION: The A1 pump is not submersible.