Maintenance And Cleaning - Hach BOD System Mode D'emploi

7.2 Commissioning
WARNING! Observe the SAFETY INSTRUCTIONS at the beginning of the manual.
DANGER! Electric shock.
Only use the mains adapter with dry hands! Only use the mains adapter in dry rooms! Do not use the
mains adapter if it is damaged! Only use the mains adapter in undamaged sockets which are suitable
for this purpose! Only use the mains adapter with a primary voltage and frequency which match the
technical specifications of the mains adapter!
DANGER! Magnetism
The magnetic fields can influence parts which are sensitive to magnetic fields, magnetic parts, or
metal parts (e.g. data carrying media, pacemakers, watches, magnetic strips, etc.). Keep these parts
away from the stirrer drive and magnetic stir bars.
ATTENTION! The device may not be operated in explosion-prone rooms.
ATTENTION! Observe the permissible environmental conditions.
NOTE! The mains adapter and the stirrer drive do not have an ON/OFF switch. The system is ready for
operation as soon as it is plugged into the mains socket.
Connect the DC connection cable of the mains adapter with the supplied Y-cable. Insert on of the Y-ca-
ble 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.
7.3 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.
7.4

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!
8 Decommissioning
Disconnect the external power supply from the unit in order to decommission the system. Disconnect
the mains adapter plug from the mains supply. Remove batteries from the measurement system.
Remove seal caps from the test bottles and clean in the correct manner. Empty and clean test bottles
correctly. Clean sensor heads. Store the stirrer drive and magnetic stir bars in a manner such that no
hazards arise for parts which are sensitive to magnetic fields.
ATTENTION! Observe the SAFETY INSTRUCTIONS at the beginning of the manual. Observe the local
legal regulations for all emptying and cleaning.
BOD Direct plus_BMU_2 03/2016
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