maxium® smart C Electrosurgery Unit with maxium® smart Beam
Revision 1
39
7.1.3
Gas supply
For the operation of the maxium® smart Beam, the noble gas argon is needed. Argon is
available in cylinders of various sizes with a nominal filling pressure of 200 bar. For
installation on the maxium® smart Cart, Gebrüder Martin recommends to use 5-liter
cylinders with argon of quality 4.8 (purity higher than 99.998%, see section 7.1.4 “Argon”,
page 40). Expanded to atmospheric pressure, these cylinders contain 1,000 liters of argon
each, enough for approximately 3–6 hours of activation time (depending on the selected
flow value). The connection is made at the inlet (8, Fig. 7-1) on the rear of the unit.
Fig. 7-1:
MABS pressure reducer
When connected to a gas cylinder, the corresponding pressure
reducer reduces the high pressure to 2.5–4.0 bar. Before connecting
the pressure reducer to the cylinder, the latter must be set up safely.
To this end, the workplace safety guidelines and procedures for
handling pressure vessels must be complied with. When the
maxium® smart Beam is installed on the cart, the cylinder can be
placed there and secured with a strap. Once the cylinder has been
set up safely, remove the protective cap from the angle valve and
screw on the pressure reducer.
Tighten the knurled screw only as far as manually possible without
effort!
Only then open the angle valve of the cylinder (at least half a
rotation in counter-clockwise direction). The pressure indicated on
the gauge of the pressure reducer shows the filling level of the
cylinder.
When the maxium® smart Beam is connected to a central gas supply, compliance with the inlet pressure of
2.5–4.5 bar must be ensured.
The hose installed on the pressure reducer has at its end a quick coupler which is snapped onto the gas
connector pin of the maxium® smart Beam. This quick coupler comprises a locking device which closes the
outlet in case of separation from the gas connector pin so that no gas can escape. If the hose is already
under pressure, then more force will be needed for snapping it on than under zero-pressure conditions,
and during the snapping on a small amount of gas will escape. This is harmless.
Close the angle valve to replace the cylinder. For bleeding the pressure reductor,
•
disconnect the quick coupler from the gas connector pin of the beamer and place it
briefly on the decompression pin (6, Fig. 7-1),
•
alternatively leave the gas hose on the beamer and produce a gas stream by
–
activating the maxium® smart Beam on the electrosurgery unit or
–
pressing the
PURGE
key on the maxium® smart Beam.
Then unscrew the pressure reducer from the cylinder.
