DVP LC 25 - Pumping Water Vapour; 6 Maintenance; General Warnings

Operating and Maintenance Instructions
EN
LC 25 – LC 40 – LC 60 – LC 106 – LC 106 Kzero – LC 151 – LC 151 Kzero – LC 205 – LC 305 – LC 205HV – LC 305HV – RC 50M
17
8702035 – 01/04/2018 – R.10 www.dvp.it
5.1.4 PUMPING WATER VAPOUR
While operating in the presence of water vapour, the pump takes in a mixture of air and water which enters the
pump and therefore also the oil tank.
The aspirated water vapour is expelled by the heat generated by the pump during operation together with the
presence of the gas ballast device.
This latter lets air enter the chamber, facilitating the elimination of the aspirated water vapour and thus avoiding
condensation in the oil.
The gas ballast device is equipped with a cut-off valve (“open”), this latter is not present in models
LC 25, LC 106 Kzero, LC 151 Kzero, LC 205 and LC 305 where the gas ballast is always active.
Therefore, if water vapour is present, it is essential that before the work cycle is started the pump must
reach its operating temperature – this is achieved by running it for about 30 minutes with the suction inlet
closed, isolating it from the user system and setting the cut-off valve open.
GAS BALLAST ON GAS BALLAST OFF
6 MAINTENANCE
6.1 GENERAL WARNINGS
For good maintenance:
• Immediately verify the causes of any malfunctions (excessive noise, overheating, etc.);
• Pay particular attention to safety devices;
• Make use of all documentation provided by the manufacturer (instruction manuals, wiring diagrams, etc.);
• Use only appropriate tools and original spare parts.
In the event of a failure to understand the information or procedures contained in this chapter, contact D.V.P.
Vacuum Technology s.p.a. for clarification before proceeding.
HAZARD
Do not perform any type of operation, modification and/or repair of any kind, except for those
listed in this manual.
Only trained or authorised personnel have the necessary expertise to perform tasks with the
technique appropriate for intervention.
HAZARD
All maintenance operations must be carried out with the pump disconnected from any power
sources. Do not operate the pump until it has reached a temperature that is not dangerous for
the operator.
HAZARD
If pump maintenance has been performed in a manner inconsistent with instructions, with
non-original spare parts or otherwise so as to impair its integrity or modify its characteristics,
D.V.P. Vacuum Technology s.p.a. will be released from any liability relating to the safety of
persons and malfunction of the pump.