4
5.5 Pumping unit
Representing the pump operating-member, it is screwed directly into pump housing
and driven by means of an eccentric cam. The suction system consists of a free-dual-
line, while discharge is provided with an adjustable delivery valve
Its components are made of high-quality alloy steel, specially treated to improve wear-
resistance characteristics. Furthermore, a special external coating guarantees excellent
resistance to corrosion, tested through salt fog tests.
5.6 Auxiliary pumping unit
989 pump series are supplied with a pumping unit but it is possible to install one or two auxiliary pumpings (with fixed
or adjustable delivery). Combining the three pump elements for higher output or manage up to three lubrication lines.
6. UNPACKING AND INSTALLING THE PUMP
6.1 Unpacking
Once a suitable location has been found to install the unit remove the pump from the packaging. Check the pump has
not been damaged during transportation or storage. No particular disposal procedures are necessary, however
packing should be disposed of in accordance with regulations that may be in force in your area or state.
6.2 Installing the pump
Damage to the power supply cable and housing could result in contact with high voltage (220/380 VAC) live parts and
hence be a danger to life:
•
Mount the pump in a way that the refill lubricator and timer are always easy to access;
•
Carefully check the integrity of the power supply cable and the unit before use;
•
In the event of there being damage to the power supply cable or the unit, DO NOT put the system into service!;
•
Replace the damaged power supply cable with a new one;
•
The unit can be opened and repaired ONLY by qualified personnel;
•
In order to prevent dangers of electric shock due to direct or indirect contact with live parts it is necessary that
the electrical power supply line is adequately protected by a suitable differential magneto-thermal circuit breaker
with an intervention threshold of 0.03 Ampere and a max. operating time of 1 millisecond.
•
The connection of the pressure switch mounted directly on the tank must be 240 VAC/DC.
•
The pump MUST NOT be submersed in fluids or utilized in environments which are particularly aggressive or
explosive/inflammable if not prepared for this purpose beforehand by the supplier.
•
For correct fixing verify the distance between centers.
•
Use gloves and safety glasses as required in the lubrication oil safety chart;
•
DO NOT use aggressive lubricants with NBR gaskets and seals; if in doubt consult the Engineering Department of
Dropsa SpA, who will provide a chart with the details of recommended oils;
•
DO NOT ignore dangers to health and observe all hygiene standards;
•
WARNING! All electrical components must be grounded. This refers to both electrical components and control
devices. In this regard ensure that the ground cable is correctly connected. For reasons of safety the ground cable
must be approx. 100 mm longer than the phase cables. In the event of accidental detachment of the cable, the
ground terminal must be the last to be removed.
The breaking capacity of the circuit breaker must be = 10 kV and the nominal current
In
=
4 A
