9
The pump is not suitable for pumping inflammable liquids or for operating in places with danger of explosion.
The pump cannot be used in swimming pools or garden Ponds.
6 Installation
The installation is safety relevant, therefore it must be carried out by an expert and authorized installer.
CAUTION: during installation apply all the safety regulations issued by the competent authorities and dictated
by experience and common sense.
Make sure that the well is free from sand and other dirt, and that its dimensions are sufficient to fit the pump.
Install a non-return valve on the delivery pipe to avoid the backflow of water.
Install an antidry rotation system, (or check an already installed one)
The pump may be installed with either a metallic pipe (which can be used for sustaining the pump) or with a flexible pipe. In the
latter case use a stainless steel cable to sustain the pump. The cable should be anchored in the hole on the discharge head of the
pump.
For no reason whatsoever lift or support the pump with the electric cable.
The pump should not touch the well bottom, keep it suspended (with the help of a support) at a height of at
least 150 mm.
Fasten the electric cable to the delivery pipe to prevent it from getting damaqed. Do not pull the cable too tight, so that the
possible heat expansion of the pipe is compensated for.
Make the eventual extension or the cable exclusively with a suitable cable and with a rating according to the necessary length as per
our table in paragraph 10.
Extension junctions should only be made with a safe and waterproof system.
The ground cable connection must be physically separated from the power cable junction.
The pump (both single phase or three phase) should be installed with an electric switchboard guaranteeing the following
functions: overload protection, short circuit protection, antidry rotation protection.
We strongly request the installation of a around fault interrupter / RCCD-protector, whose current differential operation must not exceed
30mA
For the connection of the single phase pump follow the wiring diagram shown in paragraph 9.
In case of a three phase pump check also the right sense of rotation. It should be clockwise for DIVER and counterclockwise
for DIVER HF looking the arrow on nameplate.
For no reason, even for only a few seconds, the pump can run dry (without water)
Be sure, before connecting the power, of the good insulation of the installation (min. 100 Mohm) and of a correct ground
connection.
The pumps DIVER and DIVER HF single phase versions equipped with a build in thermal overload protector. It disconnects the pump
when overheated and automatically starts it again once the temperature has gone down to normal.
7 Maintenance and hydraulic inspection.
Before proceeding with any kind of inspection or maintenance, make sure that the pump is disconnected from the power fine
without any chance of accidental reconnection.
Normally the pump doesn't need any maintenance. It may happen that impellers get blocked by small rocks, sea-weed or fibres.
To clean these or other components unscrew the screen counterclockwise clamping the shroud .
The mechanical seal is oil lubricated with 6 ccm of WHITE OIL 300 inside a chamber in the lower bearing
body . After disassembling the pump it must be carefully filled up again with the same volume.
We strongly suggest to replace all seals every time you disassemble the pump. The manufacturer will supply
these seals in one complete Kit.
If you disconnect the cable-connector, do clean the male connector pins (in the stator) and the female part (on
the cable) before riconnect, preferably using dry compressed air.
The liquid can be polluted from loss of mechanical seal lubricating liquid.
If the power supply cable is damaged, must be changed by the manufacturer or by any service.
For any requirements, please contact our Sales and Service Department.
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
en
