DAB FX Series, Instruction For Installation And Maintenance

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ENGLISH
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Marking for explosion-proof versions according to the IECEx scheme
Marking: Ex db IIB T4 Gb
Ex h IIB T4 Gb
IECEx EUT 20.0005X
Ex Area classification according to AS 2430.1.
db Flame protection in compliance with IEC 60079-1:2014.
IIB Suitable for use in explosive atmospheres (not in mines).
Gas classification, see IEC 60079-0:2004, Attachment A. Gas group B includes gas group A.
T4 The max. surface temperature is 135°C according to IEC 60079-0.
X The letter “X” on the certificate indicates that the appliance is subject to special conditions for safe use. The conditions are
mentioned in the certificate and in the installation and operating instructions.
Gb Appliance protection level.
5. INSTALLATION
The construction of tanks, reservoirs or sinkholes where the electropump is to be housed, as well as its positioning with respect
to the level of the sewage network, are subject to standards and legal regulations that must be respected.
Installation types
The FX RANGE pumps are designed for two installation types:
• free-standing submerged installation on ring stand. (Fig.3)
• submerged installation on automatic coupling. The automatic coupling system facilitates maintenance and service as the pump can
be easily removed from the tank. (Fig.4)
Before installation, check that the bottom of the tank is flat and uniform.
Check that pit, pool or tank are well dimensioned and that water level assures a correct running of electric pump with
limited number of starts per hour.
For mobile installations we recommend the use of a support disc kit (Fig 1) to prevent the pump from sinking into the
ground during operation due to suction. In any case, create a support surface that is as solid as possible.
5.1 Level switches
FX RANGE Automatic Pumps, version MA (Fig.5)
The pumps in the FX RANGE range in the MA single-phase automatic version are supplied complete with adjustable float switch.
This allows the pump to be switched on and off autonomously according to the level of the liquid inside the tank.
Make sure that the float switch can move freely in the tank without obstacles. Adjust the float switch so that it switches off
before the minimum pumping level.
The pump can work with the motor uncovered only for short periods (10min).
FX RANGE Non Automatic Pumps. version MNA and TNA (Fig.6)
The non-automatic version of the FX RANGE range of pumps (MNA and TNA) requires a control panel connected to float switches
or to another level monitoring system.
Stop Level: The stop level or float switch must be positioned so that the pump or pumps, for multiple installations, stop before the minimum
pumping level is reached.
Start level: In tanks with one pump, set the start level so that the pump is started once the requested level is reached, the pump must
always be started before the liquid level reaches the bottom inlet pipe to the tank.
2-pump start level: In tanks with two pumps, the start level switch for pump 2 must start the pump before the liquid level reaches the
bottom inlet pipe to the tank, and the start level switch for pump 1 must start this pump correspondingly earlier.
If installed, always install the high-level alarm switch about 10 cm above the start level switch; however, the alarm must always be given
before the liquid level reaches the bottom inlet pipe to the tank.
For further information on electric panels and the respective use of level switches, contact DAB Pumps.
Switches or sensors in potentially explosive environments must be certified for this application.
5.2 Installation with accessories
See figure 3a, 4, 4a
6. ELECTRICAL CONNECTION
The control panel and respective electrical equipment, when contemplated, must be of a type approved by the safety
regulations in force. Instruments and components of the panel must be of an adequate capacity and quality to maintain reliable
operation over time.