4
ENGLISH
In case of failure and/or malfunctioning of the device, switch it off and do not tamper with it. For any repairs, please contact our
service centres and request use of original spare parts. Failure to comply with the above can jeopardise the safety of the pump.
If you decide to no longer to use a device, it is recommended to make it inoperable by unplugging it from the mains.
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Make sure it is switched off electrically (both polarities), disconnecting the conductors from the contact points of the mains by
opening the omnipolar switch with at least 3 mm between the contacts.
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Appropriately eliminate any pressure in the peristaltic pumps and supply pipes, paying the utmost attention.
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Eliminate all the liquid in the pinch tubes.
In case of any leaks in the hydraulic system of the pump (breakage of injection valve, filter, pipes), you must stop the pump,
depressurise the supply pipe and then proceed with maintenance operations using appropriate safety measures (gloves, goggles,
overalls, etc.).
D i s p e n s i n g h a r m f u l a n d / o r t o x i c l i q u i d s
The following rules, along with the instructions in this booklet, must be kept in mind to avoid personal harm or property damage
due to contact with harmful liquids or the intake of toxic fumes:
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Always work as recommended by the manufacturer of the liquid being used.
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Use appropriate personal protective equipment
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Check that the hydraulic part of the pumps has no damage or breakage. Only use the device if in perfect working order.
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Use tubes suited to the liquid and the operating conditions of the plant, inserting them, if necessary, into protective PVC pipes
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Before deactivating the device, you must neutralise the hydraulic part with an appropriate reagent.
A s s e m b l i n g t h e p u m p
All metering pumps manufactured by us are usually supplied fully assembled. For further explanations, please consult the
attachment at the end of this manual where exploded drawings of the pumps and all parts with relative nomenclature are displayed in
order to have a complete picture of the equipment. These drawings are anyhow required to recognise the malfunctioning or defective
parts.
D i s a s s e m b l i n g t h e p u m p
You must always pay the utmost attention when disassembling the pump or anyhow before performing maintenance on it. We
recommend consulting the attached drawings and referring to the previous chapter
“RISKS”
before beginning any operation.
ETWIN SERIES METERING PUMP
G e n e r a l f e a t u r e s o f E Tw i n p u m p s
ETwin is an easy to use device, consisting of a pair of metering pumps (electromagnetic or peristaltic) and electronics capable of
measuring the chemical values of water in a swimming pool, such as pH, redox potential (mV) and chlorine concentration (in ppm).
These parameters can be controlled by dosing appropriate additives with the pumps supplied with eTwin. The materials eTwin is made
of are suited for dosing the most common products used in the swimming pool industry.
See the instructions for use supplied by the manufacturer of the chemicals for the selection and correct use of the
additives used in swimming pools.
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Default settings
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eTwin pH – RX
Set-point = 7.2pH; intervention: ACID
,
Set-point= 700mV; intervention: OXIDANT
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eTwin Cl – pH
Set-point = 7.2pH; intervention: ACID, 1 ppm (scale 0 - 2 ppm); DIRECT intervention
•
eTwin 2 pH
Set-point = 7.2pH; intervention: ACID on both measurements