Product And Accessory Description - Wilo Sub TWU 3 Notice De Montage Et De Mise En Service

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4 Product and accessory description

4.1. Pump
Multistage submersible pump with radial impellers in noryl.
diffusers in polyacetal.
Discharge head and suction bracket in stainless steel (AISI 304) or brass depending
on version.
External sleeve in stainless steel (AISI 304).
Shaft and cable guard in stainless steel (AISI 430F).
Non-return valve integrated inside the pump (max. Pressure: 20 bars).
Rust proof materials.
4.2. Motor
Flansch NEMA 3".
rewindable stator.
self lubricated bearings.
oil cooling motor.
immovable cable 4 x 1,5 mm² , lenght 1,8m.
It is necessary to ensure the cooling of the motor, to succed the fluid has to reach a
velocity from min. 8cm/s. In the contrary case it is strongly advised of using a cooling
pipe.
Motor speed
[min
50 Hz 2800
60 Hz 3400
Protection class: IP 58
controlbox with thermal protection for one-phase version.
Max. number of start-ups: 20
4.3 accessories (optional)
Check valve at bore-hole outlet.
Dry running protection : flowswitch or electrode.
Switchbox WILO-ER1 or ESK1 (motor protection and level monitoring).
Motor cable by metre
Heat-shrink junction.
Bladder vessel.
WILO-Fluidcontrol or WILO-pressure switch ER.
14 (40
Characteristics
Insulation
-1 class
]
F
F
DM EM
Tri-phase One-phase
380-400 V 220-230 V
380-400 V 220-230 V
Capacitor
permanent
permanent