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BD 600_GB_1 08/2015
Connect the DC connection cable of the mains adapter with the supplied Y-cable. Insert on of the
Y-cable plugs into the power supply socket of the stirrer drive. The second branch of the Y-cable is
intended for power supply of the measurement system. Plug the mains adapter into a suitable socket.
In order to ensure smooth stirring operation, it may be necessary to adjust the screws on the bottle
rack.
10.3 Magnetic stir bars
Use the PTFE covered magnetic stir bars included in the scope of delivery.
NOTE:
The length of the magnetic stir bars should not exceed 40 mm.
10.4 Stirring
ATTENTION!
Do not place hot containers on the stirrer drive; maximum temperature: 56 °C.
Fill the BOD bottles.
Place a magnetic stir bar in each bottle.
Place the BOD bottles in the rack.
10.5 Maintenance and cleaning
The stirrer drive is maintenance-free.
The magnetic drive is installed inside the housing to ensure that it is waterproof.
Clean the surface of the stirrer drive regularly. The stirrer drive can be cleaned with cleansers or di-
sinfecting solutions which are suitable for PVC. Wipe off the surface of the mains adapter with a dry
cloth.
ATTENTION!
The device may only be opened by an authorised service location in the case of a repair.
Disconnect the device from the mains before opening!
10.6 Errors
• The magnetic stir bars rotate increasingly unevenly.
It is possible that the magnetic stir bars age over the course of time. Their magnetisation decreases
as a result.
ATTENTION!
Do not leave a magnetic stir bar lying in a magnetically alternating field when it can-
not rotate. Do not subject it to a powerful opposing magnetic field. The bar can be demagnetised
as a result.
The magnetic stir bar moves in a rocking motion.
A rocking motion of the magnetic stir bar may also be due to an irregularly shaped interior bottom
of the stirring container. This can arise, for instance in BOD test bottles with a concave bottom, or if
the bottom is irregularly or asymmetrically shaped.
Sort out and replace such stirring containers.
We recommend the BOD bottles individually (order no. 418644) or in a set of six (order no. 418645).