pedrollo Top Multi-Tech Submersible Multi-Impeller Pumps Instruction Manual
- June 4, 2024
- pedrollo
Table of Contents
OPERATION MANUAL
TOP MULTI-TECH
Electric submersible multi stage automatic water pumps
Correct disposal of WEEE
(DIRECTIVE 2012/19/EU)
MADE IN ITALY
**** This manual covers only the operational aspects of the TOP MULTI-TECH pump; for safety instructions and further information please refer to the full instruction manual supplied.
GENERAL INFORMATION
The TOP MULTI-TECH / TOP MULTI-EVOTECH is a submersible multi-stage electric water pump with automatic operation, suitable for use in clear water without any suspended particles and at a max liquid temp of 40 °C. The pump operates (stop/start) automatically on demand, controlled by an internal electronic circuit and a valve on the delivery outlet. The electronic system protects the pump from dry running and seizures due to long periods of inactivity.
OPERATION
On initial connection, the pump will run automatically for about 10 seconds to
evaluate the system even if the outlet taps are closed and will continue to
run if taps are open. When the taps are closed or the demand for water is less
than 3 liters/min, the pump will stop after a delay of approximately 10
seconds.
After the initial connection, the pump will start whenever the opening of a
tap allows the system pressure to drop below 1.5 bar. (2.5 bar for TOP MULTI-
TECH/EVOTECH 4 2.5).
Please note that the start and stop pressure is not adjustable.
The maximum vertical distance between the pump and the highest outlet point
(tap) is 10 m. (20 m for TOP MULTI-TECH/EVOTECH 4 2.5).
Exceeding this limit will prevent the system from operating correctly.
For optimum performance, it is recommended that an expansion vessel of 1-liter
minimum is installed between the pump and the first outlet and its pressure
set to 1.2 bar (2.2 bar for TOP MULTI-TECH/EVOTECH 42.5).
Exceeding this limit will prevent the system from operating correctly.
Do not install a non-return valve on the pipes.
Exceeding this limit will prevent the system from operating correctly.
The built-in valve in the pump can be easily removed for maintenance by
unscrewing the coupling from the outlet port.
When doing so, care should be taken not to lose the return spring or the
sealing ring from the coupling.
If necessary, it is possible to operate the pump in manual mode without the
valve in place after refitting the outlet coupling.
Before any cleaning or maintenance, the pump should be disconnected from
the electric supply.
PROTECTION FEATURES
Whenever the pump is running it will check for the presence of water. In the
event of dry running the will pump make 3 ON/OFF tests as confirmation before
stopping to prevent damage. The pump will restart after 3 minutes and, if
there is still no water, make further attempts at doubled time intervals up to
50 hours. After this the pump will stop completely and must be manually reset
by disconnecting the power and re-connecting.
To avoid the seizure of the pump during long periods of inactivity, the pump
will start and run for approximately 10 seconds every 48 hours.
INSTALLATION ADVICE
(1) 2.2 bar for TOP MULTI-TECH/EVOTECH 4 2.5
(2) 20 m for TOP MULTI-TECH/EVOTECH 4 2.5
PEDROLLO S.p.A.
Via E. Fermi, 7
37047 San Bonifacio – (Verona) – Italy
Tel. +39 045 6136311 – Fax +39 045 7614663
e-mail: sales@pedrollo.com –
www.pedrollo.com
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