Conditions Of Use; Operation; Water Level; Operation Above 60°C - VWR 462-0493 Manuel D'instructions

2.4

Conditions of use

The water baths are for indoor laboratory use only. Check that the environmental conditions
of the laboratory are within the following limits:
Temperature
Maximum relative humidity
Altitude
3.

Operation

3.1

Water level

Ensure that the water level is at least 6cm above the bottom of the tank, and not higher than
2.5 cm from the top. This applies both without any vessels in the bath and with the maximum
contents.
Accidental water spillage can occur when shaking is started. Reduce the water level as
required.
Before emptying a bath, allow the water temperature to fall to a safe level. The 18 litre bath
should be emptied before moving.
3.2 Operation above 60
The supplied gabled lid must always be used above 60°C to optimize the temperature
control; for the bath to operate efficiently and to ensure the set temperature is reached and
maintained.
Without the lid, excessive evaporation will require the bath to be filled more often.
3.3

Use as a thermostatic bath without shaking

If the shaking trolley and drive magnet (see 3.4 below) are lifted out, a shaking bath
can be used as a simple thermostatic bath. When used in this way, if flat bottomed vessels
or objects are to be placed in the bath, always use a raised base tray (optional accessory) to
avoid damage to the under-tank heater.
3.4

Allowing the bath to run dry

Always take care to avoid allowing the water to evaporate to the point that the bath runs dry.
This can lead to the bath's internal safety cut-out operating requiring a suitable qualified
technician to reset it.
The bath has a built-in advanced detection mechanism to greatly reduce the chances of the
safety cut out occurring in most circumstances where the bath is left to accidentally run dry.
This feature is only enabled automatically when the following criteria are met:
The set temperature is >50°C
The bath has been operating for a least one hour
The water is not set to boiling point (≥99ºC)
If the bath detects signs that the bath water level may be becoming low, it will alert the user
by displaying and sounding an alarm
Once you have checked the water level and topped up the water level as necessary you will
need to switch the bath off and on in order to resume operation.
For users with specialist applications where this feature maybe unnecessarily triggered, it can
be disabled. Press the set key to enter the bath menu and use the arrow keys to select 
(Dry Protection Alarm). Press the set key and use the arrow keys to select . Use the set
key to confirm that the dry start and run dry protection are switched off.
32136 V3
Page 4
5 to 40 °C
80 % r.h. in room temperatures up to 31°C
decreasing linearly to 50 % r.h. at 40°C
Up to 5,000m above sea level
C
°
VWR shaking water bath Instruction Manual
European edition