Introduction - Holex 98 1108_1 Manual Del Usuario

14
The observance of the following safety information before start-up
and during operation of the instrument is essential.
ɽ The instrument should only be started up by authorised persons. Persons
personal
injuries
intending to work with this instrument must first familiarise themselves
with the way that it functions by reading these Operating Instructions.
ɽ The operating personnel should only carry out the service work described
in these Operating Instructions. Only original spare parts in accordance with
the manufacturer's specifications should be used for this service work.
ɽ Repairs should only be carried out by persons who have been trained
and authorised by the manufacturer.
ɽ The instrument should only be connected to an earthed electrical mains sup-
ply. The mains voltage must correspond to the voltage given on the system.
ɽ If interference or faults occur on the instrument then it must immediately be
separated from the mains supply and the cause of the interference or fault
remedied. If necessary, inform the manufacturer's service department.
In order to ensure the safety of the user and the proper working of the
instrument the checks and service work mentioned in these Operating
damage
Instructions must be carried out at the given intervals.
to the
system
The manufacturer / supplier accepts no liability for damage caused by the improper
handling of the instrument, nor for damage to third parties.

2. INTRODUCTION

The recirculation air filter system for hazardous substances is a compact instrument that is
used for the forced ventilation of safety cabinets typ 90, No 981105_1200.
It is used in a recirculating air mode.
Its low noise level makes this filter attachment for hazardous substances ideal for direct use
at the workplace. 99.999 % of the hydrocarbon vapours is removed from the exhaust air
from the cabinet by the built-in active charcoal filter filled with special active charcoal; the
exhaust air can then be returned directly into the room.
The special feature of the filter is its tandem construction; this means that when a
breakthrough is detected the second built-in filter will continue to retain contami-
nants for a period of up to 14 days.
The flow of exhaust air containing hydrocarbons does not come into contact with any com-
ponents carrying an electric current. This means that an exhaust air outlet discharging into
the outside atmosphere is not required.
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