p. 34 - Frequently asked questions
Do I have to replace the HY-3 pack (liquid supply) each
time the unit has performed a fog expulsion, including
false alarms?
No, BANDIT consumes ~28 ml. of HY-3 fluid each second
of fog expulsion. A fully charged reservoir contains
~1400 ml.of HY-3 fluid. The unit can perform ~ 50
seconds of fog expulsion. Depending on the adjusted fog
expulsion period each alarm cycle leaves, a minimum of
3 (big spaces, 200 M² with normal ceiling height of 2,80
metre) to a maximum of 25 expulsion cycles in reserve. If
the liquid level is beneath the adjusted minimum level,
the unit will request to replace the HY-3 pack. See page
22 for further explanation.
What does replacing of the HY-3 pack mean?.
The HY3-pack is an ingenious combination of different parts:
- A pressure vessel: 2 pressure resistant stainless steel tubes. These contain the HY-3
liquid and the propellant under pressure, equal to the vapour pressure of the liquid
pressure gas and the nitrogen after pressure filling. Both gasses are not inflammable,
are friendly and are not pois nous for humans or the environment.
- The electro valve: together with the liquid filter it forms an integral subpart of the HY-3
pack. If the valve is opened by the BANDIT-electronics, the HY-3 liquid goes through the
HY-3 pack ‘s liquid link in the hot heat exchanger for heating up and drying.
- The electronics: built-in to the HY-3 pack. This little PCB contains a voltage regulator,
temperature- and memory chip and a few components which take care of the
communication with BANDIT main PCB. The purpose of these electronics is to
“measure” how much fluid is present in the pressure vessel and to store all production
and filling data of the HY-3 pack.
If the pressure vessel is empty, you’ll have to replace it with a refilled one. The pressure
vessel has to be returned for refilling. There, the still present fluid and propellant will be
sucked out and recycled. The empty HY-3 pack will be automatically tested and refilled.
The built-in memory chip will be updated and the “renewed” HY-3 pack is carefully re-
packed to be sent to the customer.
This way, environment taxes and material costs are minimised. The high certainty of
returning the empty HY-3 packs for refilling is secured through the high purchase price
for a new HY-3 pack.
Does the HY-3 fluid in the HY-3 pack expire (decay) or does it loose its fog generating
capacity after a certain period?
Contrary to those fog generators which hold their supply of fog fluid in a synthetic
reservoir, the HY-3 fluid in the HY-3 pack is kept in an oxygen free, pressure
environment, Ph stabilised, de-ionised, clean filled and hermetically sealed off from the
outside world. Degeneration in the HY-3 pack is thereby eliminated.
ozone o
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BANDIT 240DB v.206
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