External Exhaust Air Route; Operation - Renfert SILENT compact Mode D'emploi

4.6

External Exhaust Air Route

An external exhaust air route (see accessories) allows the extracted air to leave the laboratory�
The installation details are supplied with the external exhaust air route�
When the extraction unit is used in conjunction with an external ventilation system, a significant
quantity of air is extracted from the room per hour.
This can create negative pressure within the room which, when using an air dependent naked
flame fed by gas, liquid or solid fuel, can cause poisonous gasses (e.g. carbon monoxide) to be
drawn into the working area.
It is therefore essential to ensure that the fresh air supply is sufficient and that the environmental
air pressure is maintained, this should then be monitored by an authorized specialist (e.g. a certi-
fied Gas Service Engineer).
5

Operation

The extractor unit is operated via the buttons on the key-pad (Fig� 2)�
5.1 Switching the Unit On
The extractor is switched ON and OFF at the On / Off switch (9)�
When the unit is switched on:
♦ All 4 displays light up (the display carries out a functional
control),
♦ The suction unit performs an automatic filter cleaning se-
quence (for approx� 8 seconds, loud vibrating noise)�
Then the unit returns to the last set operating mode�
5.2 Select Mode: automatic / continuous operating
The extraction unit has two operating modes�
The set operating mode is shown in the display (20) / (22)�
• Automatic (20):
In order to function, the extraction unit is dependent on an electronic device
connected to the power socket (12)�
• Continuous operating (22):
The extraction unit runs continuously�
⇒ Press the operating mode key (21)�
♦ To change the operating mode�
In order to start and stop the suction during continual operation, use the
key operating mode (21). The on-off switch should not be used for this.
5.3 Suction Level
The suction level key (23) allows selection between two suction levels�
The selected suction level is not shown�
The extraction unit always starts with the last set suction level�
9
- 9 -
Fig. 6
20 21 22
Fig. 7
23
Fig. 8
en