DAB DTRON2-35-90 Submersible Electronic Multistage Pump Instruction Manual

DAB DTRON2-35-90 Submersible Electronic Multistage Pump

Product Information

DTRON2 Pump

• The DTRON2 pump is a mechanical device used for pumping clean water. It should not be used for pumping saltwater, sewage, flammable, corrosive, or explosive liquids, or oils and fats. The maximum size of solid particles dispersed in the liquid should not exceed 1 mm (0.04 in).
• The pump comes in three models: 35/90, 45/90, and 35/120. Each model has a different power output as listed in Table 1. The technical specifications for the pump are indicated on the technical label on the pump, including the voltage and frequency requirements.
• The pump should be hung using the provided cord through the designated hole. The power cable should not be used to transport or lift the pump, and the handle should always be used for this purpose. The power cable should not be disconnected by pulling on the cable, and the electrical connection should be made in a dry place, away from any potential flooding.
• Periodic checks should be done to ensure that no debris (leaves, sand, etc.) has accumulated in the collection pit to prevent blockage of the suction passages.
• Product Usage Instructions

1. Before using the DTRON2 pump, ensure that the voltage and frequency requirements on the technical label match those of the electrical system.
2. Verify that the power cable and pump are undamaged and that the electrical connection is made in a dry place with proper protection.
3. Hang the pump using the provided cord through the designated hole. Do not hang the pump from the handle.
4. Ensure that no debris has accumulated in the collection pit before starting the pump.
5. Do not use the pump for pumping saltwater, sewage, flammable, corrosive, or explosive liquids, or oils and fats.
6. Periodically check the collection pit for debris to prevent blockage of the suction passages.

KEY

• The following symbols have been used in the discussion:
• SITUATION OF GENERAL DANGER.
• Failure to respect the following instructions may cause damage to persons and property.
• SITUATION OF RISK OF ELECTRIC SHOCK.
• Failure to respect the following instructions may cause a situation of serious danger for personal safety.
• Notes and general information.

WARNINGS

• Read this documentation carefully before installation.
• Installation and operation must comply with the local safety regulations in force in the country in which the product is installed. Everything must be done in a workmanlike manner.
• Failure to respect the safety regulations not only causes risk to personal safety and damage to the equipment, but invalidates every right to assistance under guarantee.

Skilled Personnel

• It is advisable that installation be carried out by competent, skilled personnel in possession of the technical qualifications required by the specific legislation in force.
• The term skilled personnel means persons whose training, experience and instruction, as well as their knowledge of the respective standards and requirements for accident prevention and working conditions, have been approved by the person in charge of plant safety, authorizing them to perform all the necessary activities, during which they are able to recognize and avoid all dangers (Definition for technical personnel IEC 364).
• The appliance may be used by children over 8 years old and by persons with reduced physical, sensory or mental capacities, or who lack experience or knowledge, on condition that they are under supervision or after they have received instructions concerning the safe use of the appliance and the understanding of the dangers involved. Children must not play with the appliance. Cleaning and maintenance intended to be carried out by the user must not be performed by children without supervision.
• Overload protection. The pump is equipped with a thermal motor protector. If the motor overheats, the motor protector switches the pump off automatically. The cooling time is about 15-20 min. after which the pump automatically switches on again. After the motor protector has tripped, it is absolutely necessary to find the cause and eliminate it. See Troubleshooting.
• The power supply cable and the float switch must never be used to carry or lift the pump. Always use the pump handle.
• Use is allowed only if the electric system is in possession of safety precautions in accordance with the regulations in force in the country where the product is installed (for Italy CEI64/2).
• Never pull on the cable to detach the plug from the socket.
• If the power cable is damaged, it must be replaced by the manufacturer or by their authorised technical assistance service, so as to avoid any risk.
• Failure to observe the warnings may create situations of risk for persons or property and will void the product guarantee.

Particular warnings

• Always switch off the mains power supply before working on the electrical or mechanical part of the system. Only firmly cabled mains connections are admissible. The appliance must be earthed (IEC 536 class 1, NEC and other applicable standards).
• Mains terminals and motor terminals may still have dangerous voltage when the motor is stopped.
• The appliance may only be used for the functions for which it was designed.
• Under certain calibration conditions, the converter can start automatically after a power failure.

RESPONSIBILITY

• The Manufacturer does not vouch for the correct operation of the electro pumps or answer for any damage that they may cause if they have been tampered with, modified, and/or run outside the recommended work range or in contrast with other indications given in this manual.
• The Manufacturer declines all responsibility for possible errors in this instructions manual, if due to misprints or errors in copying. The Manufacturer reserves the right to make any modifications to the products that it may consider necessary or useful, without affecting their essential characteristics.

GENERAL

Applications

• Multistage submerged pump with integrated electronics, ideal for use in rainwater systems and irrigation networks, for pumping water from tanks, cisterns, wells, lakes, and for other domestic applications requiring high pressure.
• Thanks to their compact and handy shape, they are also used for particular applications as portable pumps for emergency situations such as for drawing water from tanks or rivers, and draining swimming pools and fountains. Also suitable for gardening and general hobby activity.
• The electronics automatically control starting and stopping (ON/OFF) of the application depending on the request for water by the user.
• The ideal working situation is with the pump completely submerged; however, the motor cooling system allows its use up to the minimum suction height (110 mm).
• These pumps cannot be used in swimming pools, ponds, or basins where people are present, or for pumping hydrocarbons
  (petrol, diesel fuel, combustible oils, solvents, etc.) in accordance with the accident-prevention regulations in force. They should be cleaned before putting them away (See chapter “Maintenance and Cleaning”).

Pumpable Liquids

• Only use the pump in clean water.
• The pump must not be used to pump salt water, sewage, inflammable, corrosive, or explosive liquids (e.g. petroleum, petrol, thinners), greases, or oils.
• The temperature of the liquid to be pumped must not exceed 50°C (122°F).
• If the pump is used for the domestic water supply, respect the local regulations of the authorities responsible for the management of water resources.
• Maximum size of solid particles dispersed in the liquid: Diameter 1 mm (0.04 in)

Technical Data

• DTRON2 pumps are equipped with a filter, which can be opened (see Figure 1, A) or closed (called X) (see Figure 1, B), depending on the application.

• The open filter prevents the passage of suspended particles with a diameter greater than 2.5 mm.

• Inside there is a splitter that prevents suction from the bottom, up to a level of 80mm. It is possible to cut or remove it to be able to suck water up to a minimum of 35mm from the bottom. (see figure 2).
  Products with filter X are characterized by the X next to the pump name.

• The filter X is characterized by a base, which is not watertight, with a 1” female connection. The filter X is designed to be used with the KIT X : suction kit with float (see Figure 3).

• Pump models DTRON2 are identified below (Table 1):

• All technical data are marked on the technical label on the pump.
• The various items are explained below (Fig. 4):

INSTALLATION

Before starting up the pump, check that:

• The voltage and frequency on the pump’s technical data plate correspond to the values of the power supply system.
• The pump’s power cable or the pump is not damaged.
• The electrical connection must be made in a dry place, far from any possible flooding.
• The electrical system is provided with a residual-current circuit breaker with I ∆n ≤ 30 mA and the earth system is efficient. Any extension cables comply with the regulations in force.

Mechanical Installation

• Install the pump in a location that is not exposed to freezing.

• When the pump remains inactive at a temperature lower than 0°C, it is necessary to ensure that there is no water residue that could freeze and damage it.

• Hang the pump by passing the rope through the hole provided (see Figure 5). Do not hang the pump by the handle.

• Do not install check valves near the pump delivery (distance less than 1 meter (3.28ft)). The pump already has a built-in check valve on delivery.

• The DTRON2 pumps already contain a small expansion tank, calibrated for water hammer and small leaks.

• In order to reduce the number of pump starts, an auxiliary tank (Figure 6, A) with a capacity of 2 liters can be installed.

• If you want to install an additional non-return valve (Figure 6, B), it is recommended to position it downstream from the auxiliary tank.

• Do not subject the motor to excessive starts per hour. It is strictly recommended not to exceed 60 starts per hour.

• It is advisable to use pipes having a minimum diameter of 1’’, to avoid the decrease of pump performance.

• The pump is suitable for vertical or horizontal installations.

• Connect a rigid or flexible pipe to the 1¼” delivery of the pump.

• The maximum submersibility of the pump depends on the length of the power cable: 12m (39.4 ft) in the case of a cable 15m (49.2 ft) long; 7m (23 ft) in the case of a cable 10m (32.8 ft) long.
  Check the details on the technical data plate, as shown in Figure 4.

• In order to always guarantee a good water flow, it is advisable not to exceed the following heights between the service taps and the pump (see Figure 7).

To facilitate installation in the tank, it is possible to remove the power cable and/or pass it through another passage hole. To remove it, follow the instructions on the product’s quick guide. The electrical cable has a quick connection.
Have this operation carried out by qualified personnel. Check the earth connection before commissioning the product.

The pump has:

• An air vent valve (see figure 8). This valve allows the pump to prime in a very short time. If the water level is lower than the valve level, some water may escape from the vent valve.
• A small spring and diaphragm expansion tank (in the case of DTRON2 pumps). This limits the number of pump restarts and compensates for small system losses. The tank protects the pump in case of water hammer. The tank does not require any refilling or maintenance.
• An overpressure valve, which prevents water hammer. In case of ice in the delivery pipe with a submerged pump, this valve protects the pump from breakage.

Installation in a well.

• Install the pump so that the pump suction is at least 1 m (3.28ft) above the bottom of the well to prevent the intake of sand and impurities. Use rigid metal pipes to hang the pump and secure the pipes with brackets at the top of the well.

Installation in a tank

• The minimum dimensions for the pump passage in the collecting tank are 180×185 mm (7.09×7.28 in).
• Hold the pump slightly up from the bottom so as to avoid possible noises/vibrations transmitted to the tank.
• The pump will make noise if it is placed on the bottom of the tank.
• To avoid obstruction of the suction passages, it is recommended to check periodically that no dirt has accumulated in the collection trap (leaves, sand, etc.).

Installation with FLOAT KIT (accessory)

• In the case of DTRON2 pumps, an NFC level float can be added.
• This accessory, once placed in the appropriate seat in the pump, communicates with the electronic board without the aid of electrical connections.
• The minimum overall dimensions of the pump with float inside a well or tank are as follows:
• The minimum recommended distance between the end of the pump float and the wall is 3cm (1.18 in) (see figure 10).
• The minimum recommended distance between the float of the suction pipe and the wall (in the case of version X) is 10cm (3.94 in) (see figure 10).

FIRST INSTALLATION

The pump and the control panel, if present, must be connected to the same power mains, avoiding their being galvanically separated, as for example due to the presence of open isolation transformers or switches, even single-phase ones.
In particular condominium or industrial contexts, where single-phase users can be connected to different phases of the three-phase distribution provided by the public operator, the control panel and the pump might not be able to communicate.

FUNCTION

• The electronics automatically control starting and stopping (ON/OFF) of the pump depending on the request for water.
• The electronics protect the pump from faults in the Non Return Valve (NRV) in the pump casing, which are generally caused by dirt or sand deposits. The deposits may prevent the NRV from closing, even in the absence of water. Adequate maintenance of the
• NRV is therefore recommended.
• The pump is automatically switched off every hour; if everything is normal, the user only notices a very slight drop in pressure lasting a few seconds. If the NRV is blocked, the pump will go into alarm and can be restarted after removing the causes of the obstruction, preferably by disconnecting and reconnecting it to the power supply. However, the alarm stops if the valve is released mechanically.
• The electronics protect the pump from dry running, that is without water (see anti-DRYRUN function).
• The electronics protect the pump from false starts in the event of water bubbling (see anti-burping function).

Pump start and stop conditions

• When water is consumed in the water supply network, the pump starts when the starting conditions are met.
• This is done, for example, by turning on a tap and lowering the pressure in the system.
• The pump stops again when the water consumption stops, that is when the tap is turned off.

Start conditions

• The pump starts when one of the following conditions is met:
• The flow rate is higher than the minimum flow rate of 2 l/min (0.53 rpm).
• The pressure is lower than the starting pressure (CUT-IN). The cut-in is factory set at 2.4 bar (34.8 psi).
• If the pump is equipped with a control panel, the cut-in is variable.

Stop conditions

• The pump stops with a delay of 10 seconds when:
• The flow rate is lower than the minimum flow rate with pressure above the CUT-IN.
• The pump stops even when there is no water, safeguarding the motor (see ANTI DRYRUN function).
• Various alarms.

Pump On – OFF

• The pump motor is powered by the electronic control board, located inside the pump body, with an alternating voltage equal to that of the electrical power mains.
• The pump power supply is supplied to the motor according to the evolution of the user’s requirements and the hydraulic conditions of the system, as described below.

CUT-IN / Flow – Normal operation

• Normally (in the absence of alarms and when the pump has been primed) the motor is switched on immediately if the pressure is lower than the cut-in (see paragraph 4.1) or if there is flow.
• The motor is switched off if the pressure is greater than the CUT-IN and the flow is absent
• (However, after 10 seconds of permanence in this condition).

Connection to the power mains – first priming of the pump

• After connecting the pump to the mains, the pump motor is switched off and the non-return valve is at rest: if this is not the case, the pump stops and the motor will never start (see ANTIFLOOD paragraph).
• In the normal case, however, the pump behaves as follows:
• If the hydraulic circuit upstream from the pump has a pressure higher than CUT-IN, the pump motor does not start, the priming is finished regularly.
• If the circuit is not under pressure (P<CUT-IN), the pump motor is started. In this case:
• If the hydraulic circuit goes under pressure (P>CUT-IN) and there is no flow, for example, because the delivery tap is closed, the motor is switched off 10 seconds after starting: and the pump is primed.
• If there is no flow or pressure for 20 seconds (P<CUT-IN), the pump goes into DRYRUN alarm and is switched off: the pump is not primed.
• Finally, if there is flow, the pump is primed and runs normally.

Anti-DRYRUN

• If no pressure and flow are detected during normal operation (or during pump start-up) for 20 seconds, the pump will go into DRYRUN alarm and the motor will be switched off.
• The pump control electronics will try to restart the pump until the dry running condition, i.e. the absence of flow and pressure is no longer detected.
• These restart attempts will be scheduled as follows:
• DAB PUMPS LTD.
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• C04 9WN – UK
• salesuk@dwtgroup.com
• Tel. +44 0333 777 5010
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• 02-188 Warszawa – Poland p olska@dabpumps.com.pl
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• DDAB PUMPS IBERICAB PUMPS IBERICAA S.L.S.L.
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• TTel.el. +34 91 6569545 +34 91 6569545
• FFax:ax: + 34 91 6569676 + 34 91 6569676
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• info.netherlands@dwtgroup.cominfo. netherlands@dwtgroup.com
• TTel.el. +31 416 387280 +31 416 387280
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• Tel. +27 12 361 3997
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• Tel. +49 2161 47 388 0
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• Tel. +61 1300 373 677
• DAB PUMPS S.p.A.
• Via M. Polo, 14 – 35035 Mestrino (PD) – Italy Tel. +39 049 5125000 – Fax +39 049 5125950 www.dabpumps.com

Documents / Resources

| DAB DTRON2-35-90 Submersible Electronic Multistage Pump [pdf] Instruction Manual
DTRON2-35-90 Submersible Electronic Multistage Pump, DTRON2-35-90, Submersible Electronic Multistage Pump, Electronic Multistage Pump, Multistage Pump, Pump
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References

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