Operating and Maintenance Instructions
EN
LC.2 – LC.4 – LB.5 – LB.6 – LB.8 – LC.12 – LC.20
12
8702036 – 12/04/2016 – R.7
www.dvp.it
4.5
ENVIRONMENTAL CONDITIONS
The pump must be installed and used in a covered and adequately lit location.
The installation area must meet all
requirements of height, air circulation and meet the requirements imposed by existing legislation.
Temperature, Humidity and altitude
The corresponding limit values are shown in the table of the technical specifications (chapter 3.3). Please contact
the Manufacturer if environmental conditions are different from those prescribed.
Lighting
All areas must be illuminated evenly and sufficiently to ensure all operations included in this manual and must be
without shadows, reflections, glare or eyestrain.
4.6
PUMP INSTALLATION
To ensure perfect pump operation, house and place it according to the following conditions:
•
Allow sufficient space on the perimeter sides of the pump and make sure to keep the motor ventilation side free.
•
Make sure the free space adjacent to the pump allows easy access to components for inspection or
maintenance and also allows access for suitable lifting equipment.
•
The pump is equipped with mounting points. It is necessary to ensure it locks onto a perfectly horizontal plane in
order to avoid tilting in case of transportation by the system user.
•
Some models are already equipped with rubber vibration dampers installed at pump attachment points.
Whenever the model has not been equipped, ensure installation of such equipment so as not to transmit
vibration to the pump.
•
Ensure there is ventilation in the room, or inside the machine housing the pump and prevent air coming in from
the outlet or cooling fans, which could cause discomfort to personnel.
WARNING
Do not install the pump in any area with dust or other materials that could clog or rapidly cover
cooling surfaces.
4.7
USER SYSTEM
Make sure that no harmful substances contaminate the user system during installation.
If you wish the system to maintain vacuum even when pump is stopped, install a cutoff valve between
pump and system.
Make sure that no vibrations or stresses are transmitted to the pump connection.
4.8
CONNECTION
HAZARD
Pump connections should be performed by skilled and trained personnel only.
4.8.1
INTAKE AND OUTLET CONNECTIONS
User system connections (both intake and outlet) must be performed with pipes with a diameter equal to or greater
than the pump suction inlet. The weight of pipes or any expansions must not burden the pump.
It is advisable to make the final connection to the pump using flexible pipe or fittings. It is important to tighten all
pipes and couplings. Very long pipes or pipes with a diameter that is too small diminish pump performance.
HAZARD
Make sure that discharged gases are let out of the workplace.
WARNING
Always install an intake filter, especially if the pump is to work with air that might contain foreign
matters.
Pump outlet gases must be treated in such a way that they do not contaminate the working environment and the
surrounding atmosphere. If condensable vapours are pumped in, the discharge hose should be routed downwards
and have no bends to prevent the condensate produced in the discharge line from building up or flowing back into
the pump.
Never use friction hoses with hose diameters smaller than the intake diameter. Avoid exceeding hose lengths, tight
bends or bends spaced too closely together.
WARNING
Do not insert outlet fitting pipes or devices that block or impede the disposal of outlet gases (max
overpressure exhaust 0.3 bar).