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Humidifier drying recommendations
It is the responsibility of the user to ensure that the humidifier is emptied and completely dried by fan overrunning
for few minutes before switching off the unit.
Drying formula guide
To estimate the cassette drying time, we recommend the following formula:
Δt = 60 x 0,068 x H x L x E /C
With:
(Δt): Drying time in min.
(H): total cassette height in decimeter.
(L): Total cassette length in decimeter.
(E): Pad thickness in decimeter.
(C): Evaporation capacity of the air flow. C= Δx*1,2*Q
(with Q = air flow in m
3
/h and Δx humidity ratio variation in kg/kg)
EvaPack™ humidifier panel control can be connected to temperature sensors which measure inlet and outlet
humidifier temperatures (optional). When both temperatures are equal, the EvaPack™
drying is completed.
To prevent salt deposits on EvaPack™ pad: bleed-off
Water usually has a high percentage of minerals. The evaporative mechanism leaves mineral deposits on the
pad, susceptible to clog the porous of the pad and damage it.
For recirculated water units (RW)
: the bleed-off is made through water draining valve setting.
For direct water units (DW):
the bleed-off is made through an excess of water flow.
It is the responsibility of the user to adjust regularly the bleed-off time.
Bleed-off time can be reduced if no white minerals deposit is visible on the pad surface or increased if lime
scale deposit is visible.
The bleed-off must be set according to the water quality. Water analysis data can be asked to the local water
company.
In case of very hard water and in order to minimize scale build up, we recommend to pretreate the water
supply.
Summary of Contents for EvaPack Series
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