1
WIL-10200-E-03
WILDEN PUMP & ENGINEERING, LLC
SECTION 1
WILDEN MODEL T2 METAL
CAUTIONS – READ FIRST!
TEMPERATURE LIMITS:
Polypropylene
0°C to 79°C
32°F to 175°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
EPDM
–51.1°C to 137.8°C –60°F to 280°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
PTFE
4.4°C to 148.9°C
40°F to 300°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
significantly reduce maximum safe operating tempera-
tures. Consult engineering guide for chemical compat-
ibility and temperature limits.
CAUTION:
Always wear safety glasses when operat-
ing 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. (3.4 bar [50 psig] for UL models.)
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 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 reas-
sembly.
CAUTION:
Verify the chemical compatibility of the
process and cleaning fluid to the pump’s component
materials in the Chemical Resistance Guide.
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.
CAUTION:
Only explosion proof (NEMA 7) solenoid
valves should be used in areas where explosion proof
equipment is required.
NOTE:
All non lube-free air-operated pumps must
be lubricated. Wilden suggests an arctic 5 weight oil
(ISO grade 15). Do not over-lubricate pump. Over-lubri-
cation will reduce pump performance.
NOTE:
UL-listed pumps must not exceed 3.4 bar (50
psig) air supply pressure.
CAUTION:
Do not lubricate lube-free pumps.
CAUTION:
CAUTION: For UL listed pumps, do not
exceed 3.4 bar (50 psig) air supply pressure.
CAUTION:
For UL listed pumps, all pipe connections
are to be made using UL Classified gasoline-resistant
pipe compound.
CAUTION:
For UL listed pumps, all installations must
conform with NFPA 30, NFPA 30A, and all other appli-
cable codes.
CAUTION:
For UL listed pumps, air exhaust port is to
be connected to pipe or tubing to be routed outdoors
or other location determined to be equivalent.
CAUTION:
For UL listed pumps, pump is to be
grounded using the jam-nut located atop the long
vertical carriage bolt. The ground connection is marked
with a tag having the grounding symbol.
Grounding Symbol
