27
GB
4. Installation and commencement of operation
Before starting any work on the pump/motor make sure that the electric supply has been switched off and that it can
not be accidentally switched on.
Before installing and starting please check the pump for possible damages (i.e. during transport) to prevent personal
injury by electrical shock.
The pump must be installed in a horizontal position.
For best performance the dimension of the inlet-pipe (suction-hose or –pipe) must be min. 1” (25mm) and outlet (pressure-hose or –pipe)
min. ¾” (20mm). To avoid friction loss we recommend use the same dimensions for inlet and outlet.
Before starting the pump- body must be filled up with water. To avoid any damages of the pump hydraulics and seals, the pump must not run
dry! For avoiding air-locks the suction- hose/-pipe should be installed with a gradient of 2% up to the pump.
CAUTION
Using a foot- valve (non-return valve) with strainer is recommended for the jet pumps and a matter of
urgent necessity
for booster kits
.
In addition the suction hose/ -pipe should be fitted with a strainer with 3mm maximum particles size and a pre- filter before the pump (are
not in the scope of delivery).
Remark: Increasing the suction pipe length will decreasing the pump performance.
When suction – and pressure hose or -pipe are fitted and are airtight, the pump can be filled with water. Therefore remove the plug and fill
the pump with water. Filling should be done carefully to the outlet (pressure) – connection or filling to the connection at the top of the pump-
body. Tighten the valve using fingers only. Also fill the sucking hose/ -pipe with water for best performance.
The connection on the suction side (inlet) must be absolutely air –tight. Otherwise the pump will not build up a vacuum which is necessary
for priming. A hose should be a vacuum type.
5. Service / Maintenance
Always disconnect from power before servicing!
Service and repair at electrical parts of the pump (cable, motor) has to be done by authorised service- companies
or producer.
The air pressure inside the diaphragm tank should be controlled regularly every 3 months
except in the case
of EPA-P 2years are checked.
Please also look at chapter 4, last subsection.
If the mechanical seal is damaged (dry- running and/or pumping abrasive parts) water will leak between pump- body and motor. To replace
this seal the 6 screws and the pump- body must be removed, impeller turned off/locking the shaft at the fan side). Replaced the seal and the
O-ring of the pump- body and assemble all parts in reverse order.
In case of very low temperatures and in any case before the first frost the pump must be removed from water. Empty the pump and store it in
a place where it is protected from frost.
For the purpose of a repair, service kits and service tools are available on request. You will find a typical overview about our service partners
at www.zehnder-pumpen.de.
We explicitly mention that spare parts and accessories which are not delivered and checked by Zehnder are not permitted. The built in and
use of such products may negatively affect the constructive set properties under these circumstances. For damages which arise by using of
non-original spare parts and accessories, Zehnder will refuse any liability and warranty. For faults which you cannot repair by yourself you
should contact our customer service or a qualified person.
6. Warranty
This pump carries a 24 month manufacturer warranty. On the vessel including the membrane from
HWX
-P, we assume the warranty of 4
years.The warranty period begins with the date of purchase by the end user. Proof of purchase should be retained. Within this period we will
remove all kind of shortcoming due to failures of material or assembling. It is up to us either to repair or to replace the pump.
This warranty does not cover damage cause by improper use or wear and tear (mechanical seal, diaphragm, at booster kits). Also, there will
be no warranty given in case of unauthorised repair of the pump. Consequential damages caused by failing of the pump are not covered by
the manufacturer.
7..
isposal
For EU-countries only. Do not dispose the pump into the domestic waste.
In accordance to the European guideline 2002/96/EG concerning electrical and electronic equipment and implanting into
national law used electrical tools have to be collected separately and supplied to an environmentally compatible recycling.
