P 2.1L user manual V6840, version 3.6
8
Installation
Bruising danger
Damage to the device by carrying or lifting it on protruding housing parts.
The device may fall and thus cause injuries.
Lift the device only centrally on the side of the housing.
Procedure
1. Check for damage caused during transportation. In case you notice any
damage, contact the technical support and the forwarder company.
2. Setup the delivery so you are able to read the label. Using the utility
knife, cut the adhesive tape. Open the packaging.
3. Remove the foam insert. Take out the accessories kit and the manual.
4. Open the accessories kit and take out all accessories. Check the scope
of delivery. In case any parts are missing, contact the technical support.
5. Clasp the device at its side panels and lift it out of the packaging. Do
not hold onto front cover or leak tray.
6. Remove the foam inserts from the device.
7. Check for damage caused during transportation. In case you notice any
damage, contact the technical support.
8. Set-up the device in its location.
9. Remove the protective foil.
Connecting the Piston Backflushing
The piston backflushing removes salts and other substances from the area
behind the seals. To do this, connect a bottle with flushing solution to the
flush pump and to the pump head. The connection between pump head
and flush pump is preinstalled at the factory.
Functional principle
The piston backflushing function automatically flushes the rear piston area
of the pump head upon switch-on and in continuous mode.
Upon switch-on: The rear piston area of the pump head is automatically
flushed for 30 seconds.
In continuous mode: The rear piston area of the pump head is flushed
automatically every 60 minutes, for 30 seconds.
Designation
Inlet and outlet of the flush pump are located on the front of the device.
Flushing solution:
These are suitable flushing solutions:
Water
Mixture of 80 % water and 20 % ethanol
Isopropanol
Note:
KNAUER recommends the use of pure isopropanol as flushing solu-
tion for piston backflushing.
Device defect
Damage to the pump head caused by overtightened capillary fittings.
Note the torque of the fittings.
Note:
PEEK fittings can withstand pressures up to 400 bar for 1/16" and
200 bar for 1/8".
Fig. 5
Inlet symbol
Fig. 6
Outlet symbol
