Dover WILDEN BioPharm T2/SPPN/TF/TF/STF-903 Ingegneria, funzionamento e manutenzione - Pagina 5
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SECTION 3
WILDEN MODEL T2 METAL
CAUTIONS – READ FIRST!
TEMPERATURE LIMITS:
Saniflex™
–28.9°C to 104.4°C
Teflon
®
PTFE
4.4°C to 148.9°C
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. (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.
–20°F to 220°F
40°F to 300°F
3
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 Teflon
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: When
removing
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.
WILDEN PUMP & ENGINEERING, LLC
®
diaphragms, it is impor-
the
end
cap
using