Operating and Maintenance Instructions
EN
LB.5WR – LC.25WR – LB.40WR – LB.60WR – LC.105WR
8702037 – 01/01/2011 – R.0
www.dvp.it
13
5.1.5
STOP
The pump must be stopped by cutting off the power supply.
WARNING
If the pump is to be powered off, let it run with closed intake, isolated from the user system, for about
30 minutes first. This will eliminate any moisture inside the intake chamber and avoid rotor oxidation.
In the case of long machine downtime, completely empty the pump to avoid hazards of frost during cold weather or
corrosion due to possible chemical alteration of the stagnant liquid in the pump.
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.r.l 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.r.l will be released from any liability relating to the safety of persons and malfunction of the pump.
6.2
MAINTENANCE TABLE
The following table shows all required periodic operations to maintain pump efficiency.
OPERATION TYPE
FREQUENCY
OPERATOR
QUALIFICATION
Check the oil level and the absence of water vapour condensed in the tank
24 h
Check the status of the intake filter (only LB.5WR)
100 h
Change oil
500 h
Intake filter cartridge replacement (only LB.5WR)
1000 h
Clean motor fan guard and clean the pump
1000 h
Change the air exhaust filter
2000 h
Change vanes
10000 h
Shorter maintenance intervals may be required according to operating conditions (high temperature of intake gases,
intake gases containing condensable vapours, etc.).
