12
long-fibre components
operation without water (dry running) as this would cause
damage to the bearings and the running unit, resulting in total
loss
using the mains/power cable to pull the pump set out of the
borehole
applications that deviate from the specifications of section 4.1
“Intended use”.
5. Technical details / Operating limits
Operating limits are shown in the following tables.
Table 1
Table 2
Warning
The respective standards CEI 61-69 (EN 60335-2-
41) must be observed if using the pump set in
swimming pools or garden ponds.
6. Installation
6.1 Assembly
This is a pre-assembled, ready-to-install product which does
not require any connection work on the motor, pump or cable.
Please note that warranty can only be provided as
part of the 2-year “replacement guarantee” if the
pump set is returned in its original state. Any
interventions (e.g. modifications, alterations) of any
kind to the motor, pump or cable, shall result in the
warranty becoming void and exemption from any
liability for personal injuries and/or damage to
property or to the pump set itself.
Warning
Make sure without fail that you disconnect the power
supply before commencing any work on the pump
set. Ensure that no-one can switch the power supply
back on again inadvertently before completion of any
such work.
The following diagram shows assembly/dismantling of the pump
on the motor – in the event that this may become necessary after
the end of the warranty period (see fig. 2).
6.2 Requirements on the borehole
Check the quality of the water to be pumped before you use the
4WN borehole pump set. Dirty, contaminated, abrasive or aggres-
sive water can destroy the pump. If the quality of the water is
unknown, we recommend having a water analysis carried out and
then contacting our Technology Dept. to determine whether the
pump is suitable for pumping the water involved
(see section 5 / Tab. 1).
Damage to the pump caused by abrasive or aggres-
sive water is not covered by the warranty/guarantee.
Content substances listed here only represent guideline values
showing the maximum concentration of substances which may
be found in the water. In conjunction with other content substan-
ces, these may form a corrosive medium which could damage
Operating limits
Temperature of the liquid
35°C max.
Immersion depth, technical
150m max.
Immersion depth according to
EN 60335-2-41/A2
See Table 2
Switching frequency
30 starts/stops per h max..
Flow speed
0,08m/s min.
pH-value
5,8 bis 8,6
Permitted solids
1,000 mg/l (PPM) max.
Protection type
IP 68
Chloride
500mg/l (PPM) max.
Iron (Fe)
2mg/l (PPM) max.
Carbon dioxide CO
2
50mg/l (PPM) max.
Oxygen (O
2
)
2mg/l (PPM) min.
Sand content
50g/m
3
max.
Pump
H/max. Q/max.
Cable
length
Immersion depth
according to EN
60335-2-41/A2
max.
[m]
[m
3
/h]
[m]
[m]
4WN 2-7
46
3,0
20
17
4WN 2-10
67
3,0
30
27
4WN 2-14
92
3,0
40
37
4WN 3-8
54
4,2
20
17
4WN 3-11
72
4,2
30
27
4WN 3-16
106
4,2
40
37
4WN 4-7
46
6,0
20
17
4WN 4-9
59
6,0
30
27
4WN 4-14
93
6,0
40
37
i
CAUTION
CAUTION
i
Fig. 2