Pump; Motor; Accessories; Assembly / Installation - Wilo NR 4 Series Installation And Operating Instructions Manual

NR series 4-6-8 Stainless Submersibles

4.2. Pump


Multistage submersible pump with radial or semi-axial impellers, depending on size of
pump, for use in 4", 6" and 8" bore-holes.

with built-in check valve.

4.3. Motor


Consult motor manufacturer's documentation for more information.

4.4. Accessories

Accessories must be ordered separately.
 Switching/controlling equipment (motor protection + pump control)  pressure switch
assembly  sensor assembly  pressure reducer  float-/diaphragm valve  check valve
 shut-off valves  manometer  safety valve  dry-run protection device  immerson
electrodes  float switch  motor cable as assembly (incl. plug) or piece goods (without
plug)  heat-shrink cable connections  steel cable (stainless steel)  diaphragm
pressure vessel  cooling-shroud (stainless steel/PVC)  plug sets for cable connection
 etc.

5 Assembly / Installation

The pump can be operated either vertically or horizontally (for horizontal position only
with a cooling-shroud). However, in the case of horizontal installation the number of
stages is limited, depending on size of pump:
Type of pump
NR 6-12..
NR 6-18..
NR 6-24..
NR 6-35..
NR 6-45..
NR 8-42..
NR 8-80..
NR 8-100..
NR 10-170..
NR 10-250..
WILO – USA, LLC & WILO Canada Inc. • 2915 10th Ave • Calgary, Alberta CAN • Tel. (403) 276-9456 • Fax (403) 277-9456
Max. ... stages
22
18
15
12
8
14
12
8
6
4