Dilo SF6 - Page 11

Product description
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Vacuum pump:
The vacuum pump allows the evacuation of air from gas compartments.
To avoid any damage to the vacuum pump it must be protected from overpressure. The solenoid valve
upstream from the vacuum pump only opens if there is no overpressure on the suction side. Reduce the
SF
6
-overpressure with the compressor and vacuum compressor or suction pump as described under the
operating description “Gas recovery”.
Release air or nitrogen via the venting ball valve.
The vacuum pump only exhausts into the atmosphere.
(Technical data and description see chapter 11 of the operating manuals for vacuum pump).
Evaporator:
(only for devices with liquid storage)
The evaporator consists of a special steel housing with electric heating coils inside. It serves to ensure
vaporisation of liquid SF
6
.
The temperature is regulated via a control unit.
Storage tank:
The SF
6
-gas is stored in gaseous form or at higher pressure in liquid form. We distinguish between
storage in a pressure tank in gaseous form up to 25 bar and in liquid form up to 50 bar. (Attention! Do
not use these pressure tanks for transport of SF
6
-gas).
Check the pressure rating of the tank to confirm gaseous or liquid storage. If gas is stored in transport
bottles (in liquid form), please ensure the maximum fill weight stamped on the bottle is not exceeded.
Only use bottles registered for SF
6
-gas.
For transport of tanks with weight indication the weight must be taken off the
load cell prior to weighing it.
Pressure vessels must not be worked on mechanically, welded or heated.
The type plate must not be removed or made illegible.
Pressure vessels (e. g. SF
6
-tank, dry filter 64bar) should be approved by the
local technical control organisation.
The pressure vessels are produced and approved in accordance with the
corresponding regulations. (e.g. 97/23 EC).
The operator is responsible for approval and repeating checks.
Particle filter/ Dry filter:
The SF
6
-gas is purified and dried with the particle filter and dry filter installed in the system. During each
gas handling process the SF
6
-gas passes through these filters.
(see chapter 9 dry filter or particle filter)
Warning