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I-MPC Rev1 - Operating Instructions
6.4.1. Pipes
Provide a diameter assuring a liquid flow not greater
than 1.5 m/s for suction and 3 m/s for delivery.
The pipe diameters must never be smaller than the
pump connection ports.
ATTENTION: ensure the inside of pipes are clean and
unobstructed before connection.
A concentrated sand content with particles larger
than the radial clearance between the impeller and
the stainless steel wear-ring (about 1 mm) can cause
early wear damage and a reduction of the pump
performance of about 10%.
For a hydrostatic pressure test of the piping with a
pressure higher than 2.5 bar isolate the pump from the
rest of the system (close inlet and outlet valves before
and after the pump).
6.4.2. Connecting the pipes
Use pipes or fittings in plastic material.
For connection to the threaded ports of the pump
casing use a plastic pipe thread sealant (for instance:
Loctite 5331).
Teflon tape not recommended. Do not use hemp.
ATTENTION: avoid excessive tightening of pipes
or fittings in threaded ports.
Tighten the pipes or fittings only to the degree required
to ensure a tight seal.
Excessive torque may cause damage to the pump.
To join metal piping, first connect a transition union
with a plastic tailpiece to the threaded port of the pump
casing. Coupling dissimilar materials may cause
corrosion and cracks due to non-uniform expansion
and contraction in thermal cycling applications.
Secure all pipes to supports and connect them so that
they do not transmit stress, strain or vibration to the
pump. The pump must not be subject to the weight or
thermal expansion of the piping.
Strain from the piping may damage or warp the
pump casing and cause leakage.
6.4.3. Suction pipe
The suction pipe must be perfectly airtight.
With a pump located below water level (inflow under
positive suction head) (section 15., fig. 7), install inlet
and outlet valves to isolate the pump.
With a pump located permanently above the water
level (suction lift operation), with various suction pipes
(for skimmers, main drain, fitting for vacuum cleaner),
connect all the pipes with their own gate valve to a
manifold. As far as possible, locate the pipes and
the manifold below water level with the pump being
reached by a single vertical pipe (see section 15.,
figure 8b and section 7.2.3.).
With a pump located permanently above the water
level of a swimming pool, avoid suction lifts higher
than 3 m with respect to the main drain. With a suction
lift above 1,5 m fit a check valve (accessible) in the
suction line from the main drain.
In operating with flexible hoses, use a reinforced spiral
suction hose in order to avoid hose narrowing due to
suction vacuum.
6.4.4. Delivery pipe
Fit a gate valve in the delivery pipe to adjust delivery
and head.
Install a pressure gauge.
6.5. Electrical connection
OFF
The electrical connection must be carried out
only by a qualified electrician in accordance
with local regulations.
Follow all safety standards.
Make sure that the frequency and mains voltage
correspond to the values indicated on the plate.
For use in swimming pools (only when there are no
people in the pool), garden ponds and similar places,
an F-type residual current device with IΔN not
exceeding 30 mA must be installed in the supply circuit.
Install a device for disconnection from the mains
(switch) with a contact separation of at least 3 mm in
all poles.
The pumps are supplied with with a built-in thermal
protector and with a plug.
Connect the plug to a socket with an earth lead.
The motor will stop if overheating is detected.
When the windings cool down, the thermal protector
enables re-starting.
The pumps are supplied with power supply type
H07RN-F with plug and cable section equal to or
greater than the value defined in table 1 in paragraph
18.
When extension cables are used, make sure the cable
wires are of adequate size to avoid voltage drops.
In Austria pumps to be used in swimming pools
and garden ponds should be equipped with a fixed
connection line according to ÖVE B/ EN 60555 Part 1
to 3; power supply should be via a ÖVEtested isolating
transformer whereby the secondary nominal voltage
should not exceed 230V.
6.5.1. Operation with frequency converter
ATTENTION: never power the pump with a
frequency converter.
7. PROGRAMMING GUIDE
7.1. Parameters
The following information is displayed:
- Pump status parameters
- Programming parameters
- Alarms
7.2. Pump status parameters
They allow you to view:
- Initial screen (rUn, OFF, StB, Err)
- Motor operating frequency
- Supply current input
- Supply electrical power input
- Supply voltage
Starting from the main screen, press the arrows (plus)
or (minus) to view the other parameters
7.3. Programming parameters
To view the programming parameters, select
(menu).
The following are displayed in succession:
UP - Operating settings: these are the settings to
determine the operating mode.
PP - Priming settings: these are the settings for priming
mode and timing.
