Technical Details / Operating Limits; Installation; Assembly; Requirements On The Borehole - EBARA 4WN Series Original Instruction Manual

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
Operating limits
Temperature of the liquid
Immersion depth, technical
Immersion depth according to
EN 60335-2-41/A2
Switching frequency
Flow speed
pH-value
Permitted solids
Protection type
Chloride
Iron (Fe)
Carbon dioxide CO
2
Oxygen (O )
2
Sand content
Table 2
Pump H/max. Q/max.
[m]
4WN 2-7 46
4WN 2-10 67
4WN 2-14 92
4WN 3-8 54
4WN 3-11 72
4WN 3-16 106
4WN 4-7 46
4WN 4-9 59
4WN 4-14 93
Warning
i
The respective standards CEI 61-69 (EN 60335-2-
41) must be observed if using the pump set in
swimming pools or garden ponds.
35°C max.
150m max.
See Table 2
30 starts/stops per h max..
0,08m/s min.
5,8 bis 8,6
1,000 mg/l (PPM) max.
IP 68
500mg/l (PPM) max.
2mg/l (PPM) max.
50mg/l (PPM) max.
2mg/l (PPM) min.
3
50g/m max.
Immersion depth
Cable according to EN
length 60335-2-41/A2
max.
3
[m /h] [m] [m]
3,0 20
3,0 30
3,0 40
4,2 20
4,2 30
4,2 40
6,0 20
6,0 30
6,0 40

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.
CAUTION
i
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).
17
27
37

6.2 Requirements on the borehole

Check the quality of the water to be pumped before you use the
17
4WN borehole pump set. Dirty, contaminated, abrasive or aggres-
27
sive water can destroy the pump. If the quality of the water is
unknown, we recommend having a water analysis carried out and
37
then contacting our Technology Dept. to determine whether the
17
pump is suitable for pumping the water involved
27
(see section 5 / Tab. 1).
37
CAUTION
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
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.
Damage to the pump caused by abrasive or aggres-
sive water is not covered by the warranty/guarantee.
Fig. 2
12