Use Of Argon In The Infire Htc Speed With Gas; Management Module - Dentsply Sirona inFire HTC speed Operating Instructions Manual

Dentsply Sirona
Operating Instructions inFire HTC speed
61 30 459 D 3497
D 3497.201.01.19.02 09.2017
6.5.1.2 Use of argon in the inFire HTC speed with gas management
module
With a factory-installed NPM function, the inFire HTC speed has an
internal gas management module which requires an inlet pressure of 7-8
bar in order to provide the required volume flow of 1.1 l / min for NPM
sintering.
The technical components are designed for a maximum inlet pressure of
8 bar.
The supply of argon is controlled via an electrically switchable valve.
When the program is started the furnace control activates the supply of
argon and switches it off again when the program is terminated. The
switching valve closes automatically in the event of a power outage.
DANGER
Observe the following when connecting argon at the furnace gas

management module:

– The valve on the gas cylinder should be limited to a maximum outlet
pressure of 8 bar in order to prevent excessive stress being placed on
the installed components in the furnace.
- The outlet pressure of the cylinders must be set to a minimum of 7 bar
and a maximum of 8 bar.
– Following installation, a check is required to ensure that the gas lines
and connected sockets are secure and that there are no leaks so that
no argon escapes uncontrollably.
– In the event of malfunction the volume of one argon cylinder is enough
to flood an entire room. Therefore, adequate ventilation and air
extraction is to be provided at the place of installation, otherwise the
user is at risk of suffocation.
As the gas is heavier than air, appropriate ventilation in the floor area is
recommended. Shafts and ducts must also be protected from gas
infiltration.
– Do not store gas cylinders in the working area.
– Always check valves for tightness on full and empty cylinders when
changing a cylinder.
– Secure cylinders from falling over.
– Maintenance: a regular tightness test is required.
6.5 Non-precious metal (NPM) sintering (optional)
6 Operation
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