Carel compactSteam CH002V1000, User Manual

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compactSteam
Cod. +030221905 – rel 1.0 - 18 Jannuary 2006 7
1. How The compactSteam Works
compactSteam is an electrode humidifier. It produces steam for humidification by passing electric current through the water in the steam plastic generator cylinder
between metal electrodes. There are no heating elements. Steam output is directly proportional to the conductivity of the water, and the amount of electrode
immersed in the water.
On a call for humidity, the
compactSteam controller will open the water fill valve (1) and allow water
to enter the cylinder. A flow restrictor (2) prevents the unit from filling too quickly or with too much
pressure. The water flows up the fill tube (3) and into the fill cup (7)
. Water then flows over the dam
in the fill cup (7), which creates a 1” air gap to prevent backflow of contaminated water into the feed
lines, and through the fill tube (4) and into the bottom of the steam cylinder (11). Any backflow or
overflow of water travels through the overflow hose (5) to the drain.
As the water fills the cylinder, it will reach the electrodes (10) and current will begin to flow. As the
water continues to fill the cylinder, the current will increase, and this is monitored by an amperage
transformer connected to one of the power wires (9) and located on the electronic controller. When
the desired current is reached, the fill valve will close (1) and the water will then begin to warm and
produce steam. If the water reaches the cylinder full probes (8) prior to reaching the desired current
level, the fill valve (1) will be closed to prevent overflow and the drain valve (13) will be opened to
drain away some water so as to move the water apart from the cylinder’s top. If the current rises too
much as the water fills the cylinder, the drain valve (13) will be activated to drain away some water
and reduce the current flow to acceptable levels. Note that, any time the drain valve is activated, the
2
nd
fill valve will be opened for tempering the hot drained water down to 140 °F / 60 °C in accordance
to local and national standards.
F
ig. 1.a
Periodically, based on the incoming water conductivity, the unit will open the drain valve (13) and drain some water to reduce the mineral concentration.
A strainer (12) in the cylinder helps to prevent mineral debris from jamming the drain valve (13).
In case compactSteam remains powered but idel, i.e. without producing steam, for more than 72 hours (3 days), the cylinder will be emptied not to have stagnant
water inside.
If there is no water in the cylinder, there will be no current flow and no steam production. The electrodes do not burn out, but they will eventually become completely
coated with mineral and the cylinder will then need to be replaced or cleaned.
2
1
3
4
5
6
7
Fig. 1.b
No. Description
1 Steam generator cylinder
2 Room blower/manifold (optional)
3 User interface/display
4 On/Off, SET buttons
5 Fill & tempering valves
6 Fill & drain connections
7 Drain valve
9
8
7
6
5
4
3
2
1
10
11
12
13
14
15
Tab. 1.a