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enGLISH
Wash down Systems 3.4 and 5.0 mounted to
dc motor 12/24 V
Typical applications
The WD 3.4 and the WD 5.0 are both five
chamber positive displacement diaphragm
pumps.
These pumps are the ideal choice for wash
down applications as they provide 5 bar
pressure (70psi), making clean-up faster and
easier.
Features
• Quiet operation
• Smooth flowing
• Self priming
• Integrated pressure switch turns pump
on and off automatically when the
spray nozzle is opened and closed
• Dry running without damage
• Low power consumption
• Quick disconnect fittings
Working principle
As the pump runs, pressure builds until
reaching 5 bar/ 70 psi. At this point, the in-
tegrated pressure switch automatically shuts
the pump off.
The pump is equipped with positively
checking outlet valves which ensure that the
pressure is maintained after the pump shuts
off.
When water is demanded the pressure
decreases. After a moderate drop in pressure,
the integrated pressure switch automatically
turns the pump back on.
Due to their durable construction and
thoughtful design, the WD 3.4 and the WD
5.0 pumps will provide many years of ser-
vice.
Important! The pressure setting of this
pump is made at the factory. Warranty
invalidated by pressure switch inter-
ference.
8
Technical description
Body:
Nylon
Valve housing:
Polypropylene
Valves:
Nitrile
Diaphragm:
Santoprene
Connection:
3/8" BSP, /" hose
(ø 3 mm) or
US: /" NPT, 3/4" hose
(ø 3 mm)
US: 3/4" Garden hose
thread (GHT)
Max. liquid
temperature:
Max +50°C/+0°F
Fasteners:
Stainless steel
Max. suction lift: WD 3.4 – .5 m/8. ft
WD 5.0 – 3 m/9.8 ft
Cut in pressure:
3.7 Bar/54 psi
Cut-off pressure:
5 Bar/70 psi
Duty cycle:
Intermittent,
max 0 min
Motor:
WD 3.4 – 30 W
WD 5.0 – 85 W
/4 V DC
with built in thermal
protection
The motor is ignition protected according to
ISO 8846 (Small craft
– Electrical devices – Protection against igni-
tion of surrounding flammable gases).
Type designation
See page 39
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