5
Pump versions
Standard version = MVP 035-2, MVP 055-3.
C- version = Pump in corrosive gas version:
Pump in corrosive gas version are distinguished from the afo-
rementioned standard versions by the use of corrosive gas
resistant materials in the working chamber which comes into
contact with the media (see Section 8.2 for such materials).
Gas ballast version:
To avoid condensation in the pump, the MVP 035-2, the
MVP 055-3C are fitted with a gas ballast valve as standard.
Motor versions:
All pumps described in that manual are equipped with an
single phase broad range voltage motor.
2.2. Differences Between The Pump Types
Typ
Number Max.
volume
Final
pressure,
Gas
of
flow rate
total
ballast-
cylinders (m3/h)
without / with
valve
50/60 Hz
gas ballast
MVP 035-2
2
2,1/2,4
4 mbar / 5 mbar
yes
MVP 055-3
4
3,3/3,8
2 mbar
no
MVP 055-3C 4
3,0/3,5
2 mbar / 4 mbar
yes
Proper use
– The Diaphragm Pump MVP pump series may only be used
for the purpose of generating vacuum.
– Do not pump corrosive or explosive gases.
– Do not pump liquids.
– Do not operate the pump in locations where there is an
explosion hazard.
– Accessories other than those named in this manual may
not be used without the agreement of PFEIFFER.
– Do not use the connecting line between the heads of the
pump as a handle.
– The Diaphragm Pumps may not be used for the purpose of
generating pressure.
– Equipment must be connected only to a suitable fused and
protected electrical supply and a suitable earth point.
– Ensure that installation is in compliance with limitations
from the degree of protection, see section “Technical
Data“.
Improper Use
The following are regarded as improper:
– Uses not covered above, and, in particular:
– Connection to pumps and units which is not permitted
according to their operating instructions.
– Connection to units which contain touchable and voltage
carrying parts.
Improper use will cause any rights regarding liability and gua-
rantees to be forfeited.
Features
– Switchable single phase broad range voltage motor.
– Mains connection via cold unit socket with safety strap
(mains cable not included in the standard delivery).
– ON/OFF mains switch.
