Hach BOD Direct plus, Basic User Manual

Page: 21 / 290

21
BOD Direct plus_BMU_2 03/2016
1 Important information
ATTENTION!
The tolerances / measurement precision specified here only apply for use of the devices in EMC en-
vironments in compliance with the basic requirements in accordance with DIN EN 61326-1:2013.
Only use the supplied mains adapter!
Use of an incorrect mains adapter can result in damage to the measurement system and/or the stirrer
drive.
Unauthorised modifications of the system can result in measurement errors, danger, and electroma-
gnetic interference. The manufacturer bears no responsibility for the consequences of such modifica-
tions.
Do not place hot stirring containers on the stirrer drive. Maximum temperature: 56°C. The stirrer drive
can be damaged if this is disregarded.
The device may only be opened by an authorised service location in the case of a repair. Disconnect
from the mains before opening!
The test bottles are contained in the measurement system during transport. Make sure that they do
not fall to the floor during unpacking.
IMPORTANT INFORMATION!
Do not leave a magnetic stir bar in an alternating magnetic field when it cannot rotate. It can be
exposed to a powerful opposing magnetic field. It could be demagnetised as a result.
Observe the permissible environmental conditions as specified in the technical data.
Avoid extreme temperature changes.
Do not use the mains adapter in damp rooms and do not use it in areas subject to spray water.
If the mains adapter has become wet or damp, do not touch it or the system. De-energise the socket.
Only use the mains adapter for the power supply of a stirrer drive and a measuring unit. If more de-
vices are connected, the system can malfunction.
The length of the magnetic stir bars should not exceed 40 mm. Do not use elliptical stir bars with a
round cross-section.
Place the stirrer drive on a horizontal surface with sufficient bearing capacity to support the weight of
the stirrer drive and the measurement system with filled bottles. The measurement system can slide
off the stirrer platform if it is in an inclined position. Bottles and the system can fall to the floor.
To disconnect the mains adapter, only pull out the secondary cable (15V DC) from the measurement
system and and the stirrer drive at the plugs! Otherwise, the cable can be damaged.
Remove the depleted batteries from the device soon in order to avoid leakage.
For periods of extended non-use, remove the batteries from the device as a precautionary measure.
The battery status should be checked regularly, even if the device is normally supplied externally
(mains adapter plug), in order to prevent leaks from empty batteries.
The sample may not come into contact with KOH. Otherwise the measurements will be falsified.
The stirrer drive starts automatically as soon as the power supply is connected. Any magnetic stir bars
or other magnetic parts nearby can move unexpectedly as a result.
GB