Spare Parts - VWR VP 820 Manuel D'instructions

English
Flow rate, pressure or vacuum too low
The pump does not achieve the output specified in the Technical data or the data sheet.
Cause
Leaks occur on connections, lines or pump
head.
Connections or lines completely or partially
jammed.
Head parts are soiled.
Diaphragm or valve plates are worn.
After diaphragm and valve plates have been
replaced
Tab. 8
Pump is switched on, but does not run, the on/off-switch on the pump is not lit
Cause
Pump is not connected with the power source.
No voltage in the power source
Fuse in the pump is defective.
Tab. 9
Pump is switched on, but does not run, the on/off-switch on the pump is lit
Cause
The thermal switch has opened due to
overheating
Tab. 10
Fault cannot be rectified
If you are unable to determine any of the specified causes, send the pump to VWR Customer Service.
1. Flush the pump to free the pump head of dangerous or aggressive gases (see chapter 8.2.1).
2. Clean the pump (see chapter 8.2.2).
3. Send the pump to VWR with a filled out decontamination declaration (see appendix) and specification of
the medium transferred.

10. Spare parts

A Service Set contains all spare parts needed for one complete service:
2 diaphragms and 4 valve plates/sealings.
Service Set for pump type:
VP 820
Tab. 11
12
Fault remedy
 Check that tubes sit correctly on hose nozzles.
 Replace leaky tubes.
 Eliminate leaks.
 Check connections and lines.
 Remove the jamming parts and particles.
 Clean head components.
 Replace diaphragm and valve plates (see chapter 8.3).
 Check that the spacers have been replaced onto the
diaphragm screw thread.
 Check head connection and hose connections for
leaks.
 Possibly carefully tighten the outer screws (fig. 7/4) of
the top plate crosswise.
Fault remedy
 Connect pump to mains power.
 Check room fuse and switch on if necessary.
 Remove pump's mains plug from the socket.
 Loosen marked lid on underside of the pump.
 Select and replace suitable fuse (see chapter 4).
Fault remedy
 Remove pump´s mains plug from the socket.
 Allow pump to cool.
 Trace cause of over-heating and eliminate it.
Order-No.:
057358