Davey 6 Submersible Borehole Pumps User Manual

6” Submersible Borehole Pumps

Installation and Operating

Instructions

Please pass these instructions on to the operator of this equipment.

Thank you for purchasing a quality Davey product.

These operating instructions contain fundamental
information and precautionary notes. Please read the
manual thoroughly prior to installation of unit, electrical
connection and commissioning.

Contents

Page

1. Delivery and Storage ...................................... 3

1.1 Delivery ............................................................ 3

1.2 Storage and Handling ....................................... 3

2. General Data ................................................... 3

2.1 General Description .......................................... 3

2.2 Applications ...................................................... 3

2.3 Pumped Liquids ................................................ 3

3. Installation at Site ........................................... 3

3.1 Positional Requirements .................................. 3

3.2 Diameter of Pump/Motor .................................. 4

4. Electrical Connection ..................................... 4

4.1 General ............................................................. 4

4.2 Checking of Direction of Rotation ..................... 4

5. Pump Installation ........................................... 4

5.1 Assembly of Motor & Pump .............................. 4

5.2 Riser Pipe ......................................................... 4

5.3 Cable Fitting ..................................................... 4

5.4 Lowering the Pump .......................................... 4

5.5 Installation Depth .............................................. 4

6. Start -Up .......................................................... 5

7. Minimum Flow Requirements ....................... 5

8. Water Temperature ......................................... 5

9. Maximum Start & Pressure

System Installation ......................................... 6

10. Maintenance and Service .............................. 6

11. Fault Finding Chart ........................................ 7

12. Disposal .......................................................... 7

General

This pump has been developed in accordance with
state-of-the-art technology; it is manufactured with
utmost care and subject to continuous quality control.
These operating instructions are intended to facilitate
familiarisation with the pump and its designated
use. The manual contains important information for

reliable, proper and efcient operation. Compliance

with the operating instructions is of vital importance
to ensure reliability and a long service life of the
pump and to avoid any risks. This pump must not

be operated beyond the limit values specied in the

technical documentation for the medium handled,
capacity, speed, density, pressure, temperature
and motor rating. Make sure that operation is in
accordance with the instructions laid down in this
manual or in the contract documentation.
The name plate indicates the type series, main
operating data and works/serial number; please quote
this information in all queries, repeat orders and
particularly when ordering spare parts.

Safety

These operating instructions contain fundamental
information which must be complied with during
installation, operation and maintenance. Therefore
this operating manual must be read and understood
both by the installing personnel and the responsible
trained personnel/operators prior to installation and
commissioning, and it must always be kept close to
the location of operation of the machine/unit for easy
access.

Marking of instructions in the
manual

The safety instructions contained in this
manual whose non-observance might
cause hazards to person are specially
marked with the general hazard sign,
namely:

(safety sign)

Non-compliance with safety instructions

Non-compliance with safety instructions can
jeopardise the safety of personnel, the environment
and the machine itself. Non-compliance with these
safety instructions will also lead to forfeiture of any
and all rights to claims for damages.
In particular, non-compliance can, for examples, result in:

- failure of important machine/unit functions,

- failure of prescribed maintenance and servicing
practices,

- hazard to persons by electrical, mechanical and
chemical affects.

Safety awareness

It is imperative to comply with the safety instructions
contained in this manual, the relevant national and
safety regulations and operators own internal work,
operation and safety regulations.

Safety instructions for maintenance, inspection
and installation work

The operator is responsible for ensuring that all
maintenance, inspection and installation work

be performed by authorised, qualied specialist

personnel who are thoroughly familiar with the
manual.
Work on the machine must be carried out only during
standstill. The shutdown procedure described in the
manual for taking the machine out of service must be
adhered to without fail.

Pumped liquids that may be hazardous to
health must be decontaminated prior to
maintenance.

Immediately following completion of the work, all
safety-relevant and protective devices must be re­installed and/or re-activated.

Unauthorised modication

and manufacture of spare parts

Modications or alterations of the machine are only

permitted after consultation with the manufacturer.
Original spare parts and accessories authorised by
the manufacturer ensure safety.

2

1. Delivery and Storage

1.1 Delivery

These submersible pumps are supplied from the
factory in proper packing in which they should remain
until they are to be installed.
During unpacking and prior to installation, care must
be taken when handling the pump to ensure that
misalignment does not occur due to bending.
The loose data plate supplied with the pump should

be xed close to the installation site.

The pump should not be exposed to unnecessary
impact and shocks.

1.2 Storage and Handling
Storage temperature: -20°C to +60°C

The pump should not be exposed to direct sunlight.
If the pump has been unpacked, it should be stored
horizontally, adequately supported, or vertically to
prevent misalignment of the pump. During storage,

the pump can be supported as shown in g. 1.

The pump must be installed so that the suction motor
adaptor is completely submerged in the liquid. The
pump can be installed either horizontally or vertically,
see also section 3.1 Positional Requirements.

2.3 Pumped Liquids

Pumped liquids must be: clean, thin, free of solid

particles or bres, compatible with pump components

and materials.
The maximum sand content of the water must not
exceed 50 g/m3. A larger sand content will reduce the
life of the pump and increase the risk of blocking.
When pumping liquids with a density higher than that
of water, motors with correspondingly higher outputs
must be used.

3. Installation at site

3.1 Positional Requirements

If the pump is to be installed in a position
where it is accessible, the coupling must be
suitably isolated from human touch. The
pump should be installed into a suitable
shroud.

g. 1

If the pump is not handled in a vertical position, it must
be lifted by the motor and the pump at the same time.
Note that the centre of gravity will vary, depending on
pump type & motor size.

2. General Data

2.1 General Description

All 6” & 8” submersible pumps are multistage pumps
working with counterclockwise direction of rotation
(observing from the delivery side) directly coupled
to special submersible motors (according to NEMA
rules).

PUMP IDENTIFICATION CODE

SS

2.2 Applications

These submersible pumps, are designed for a wide
range of water supply and liquid transfer applications,
such as the supply of fresh water to private homes or
waterworks, water supply to nursery gardens or farms,
drawdown of groundwater and pressure boosting, and
various industrial jobs.

The pump is suitable for both vertical and horizontal
installation, however, the pump should never be

installed below the horizontal, see g. 2.

NOTE: During operation, the suction
motor adaptor of the pump must always be
completely submerged in the liquid. In special
conditions, it may be necessary to submerge
the pump even deeper, depending on the
operation conditions of the actual pump and
the NPSH value.

OK!

NO!

3