Earth bonding
An M 6 stud is provided for an additional local earth bonding (e.g. 6 mm
2
lead) next to the mains
cable entry on the rear panel of the unit. We advise you to use this connection facility.
Noise insulation
The unit ventilation system develops a sound pressure of approx. 57 dB(A).
The unit may develop higher noise levels in unfavorable installation conditions. Supplementary
measures may have to be implemented to improve the sound insulation in the room.
Protective gas connection
An adequate supply of compressed air or inert gas (e.g. 10 000 liter nitrogen bottle or central
supply) must be connected up to unit (rear panel) for emergency ventilation in the event of a fault
during the heat treatment process (additional safety measures may be necessary depending on
to the chosen inert gas).
Connection: use a gas fitting ( outer Ø 5 mm) and hose to connect up to the gas supply and
secure.
The connection must be made via a pressure reducer with
1 bar input pressure setting
.
Check the input pressure setting:
-
Before connecting up to the unit, allow the gas to flow freely and set the input pressure to 1
bar on the pressure reducer.
-
Connect up to the unit before starting, with the power switch set to " O ", set the
release switch to "
" open the gas supply and allow the gas to flow, set the
pressure reducer to 1 bar input pressure.
Close the release switch.
It may not be necessary / possible to change the setting of the pressure reducer. Only
inert gases or compressed air may be used. Do not connect up to burnable gases.
On-site ventilation system, General information
The total
length
of the connected
ventilation and exhaust air lines
should not exceed
6 m
(pipe Ø : 100 mm) with a maximum of 3 elbows each 90 °. A directly connected exhaust air line
(without draft breaker) must not be longer than 1 m.
Following installation of the required lines, the unit can be adapted to the local ventilation
conditions within certain limits by adjusting the fresh-air flap. This work may only be performed
by suitably qualified authorized personnel.
Longer lines or greater flow resistance (e.g. caused by fine fresh-air filters) may necessitate a
modification to the fresh-air supply, e.g. with a blower.
Refer to the chapter on
TECHNICAL DATA
for further
information on the ventilation system
.
2.
SETUP AND INSTALLATION
10/25
50 043 136
When connecting protective gases, the national valid environmental regulations and
accident prevention regulations must be observed.
