Operation; Servicing - Sartorius Stedim Biotech 16694-2-50-06 Instrucciones De Manejo

4.

Operation

– The pumps can be switched on and
off using the power switch.
!
Specific safety instructions for the
media being handled must be
observed.
– Before pumping a medium, the
compatibility of materials of pump
head, diaphragm, and valves with
the medium must be checked (for
pump materials: see table 3).
– The pumps must not start against
pressure or vacuum. This also
applies when the pump restarts
after the power has been cut off
for a short period. If a pump starts
under pressure or vacuum, then
the thermal switch will be activated
and switch the pump off.
!
When the operation of the pump is
interrupted by the thermal switch,
the pump will re-start automatically
after cooling down. Take all care
necessary to prevent this leading to
a dangerous situation.
!
The maximum permissible operat-
ing pressure (see table 2) must not
be exceeded.
– To prevent the maximum permis-
sible operating pressure being
exceeded, restriction or control of
the air or gas flow should only be
carried out in the suction line.
– If restriction or control of the air
or gas flow is made on the pressure
side ensure that the maximum per-
missible operating pressure is not
exceeded. Excessive pressure (with
all of the related hazards) can be
prevented by placing a bypass line
with a pressure-relief valve between
the pressure and suction sides of
the pump. For further information,
contact our specialists (contact
address: see last page).
– When the pump is at a standstill
the inlet and exhaust must be at
normal atmospheric pressure.
– Change the filter (accessory) if it
is dirty.
– Pumps that may be employed as
vacuum pump and compressor
must not be used to produce vacu-
um and pressure at the same time.
– Diaphragm and valve plates are the
only parts subject to wear. Wear is
usually indicated by a drastic reduc-
tion in the pneumatic performance
(vacuum, pressure, delivery). When
replacing parts proceed as described
in section 5.
– Ambient conditions: see chapter
1.3.
5.

Servicing

!
Before working on the pump,
disconnect it from the electricity
supply by pulling the plug out.
• Diaphragm and valve plates are
the only parts subject to wear.
They are simple to change.
• Always change valve plates,
diaphragm, and sealing rings at the
same time. If the diaphragm and
the valve plates are not changed
at the same time the nominal
performance of the pump is not
guaranteed after the service.
• If aggressive, toxic or other types
of gases hazardous to health have
been pumped please observe:
1.) Clean the pump and its compo-
nents before servicing.
2.) Ensure that the service personnel
is not subject to a health hazard
during diaphragm and valve plate
changes. Apply the necessary safety
measures (example: the use of
protective gloves).
3.) Ensure that the discarded parts and
materials are safely and correctly
disposed of.
Parts|tools required
– Service Set (see section 8)
– Philips-head screwdriver No. 1
– Small screwdriver
– Pencil
Changing the structured diaphragm,
valve plates, and sealing rings in the
following sequence:
a) Remove pump head
b) Change structured diaphragm
c) Change valve plates and sealing
rings
d) Refit pump head
See figs. 4 and 5.
5