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Control Training and Service Manual
If the off time is less than 15 hours (or user programmed value) the pre-fill program
is bypassed and the infrared lamps and water valve are activated at the same time
to fill the pan to the proper water level and initiate humidification.
During normal infrared humidification operation the water makeup valve is
periodically closed (no pan fill) and opened (pan fill) based on a timing sequence
to allow for the evaporation of water from the pan (see flow chart below).
With the humidifier water flush rate set at the factory default value of 150% the
water makeup valve will open for 7 minutes of fill time with an off time of 45
seconds between fill cycles for a small pan. For a large pan water makeup valve
will open for 10 minutes of fill time with an off time of 80 seconds between fill
cycles. The user can modify the percentage from 110% to a maximum of 500% in
1% increments.
Autoflush Control Flow Chart
Call for
Humidification
On in last
15 Hours?
HMV Pre-fill
30 sec – small pan
60 sec – large pan
HMV and Lamps on
4 min – small pan
7 min – large pan
Humidification
Lamps only
8 min – small pan
10 min
–
lar
g
e
p
an
NO
YES
Refill
110% to 500%
Notes:
1. IFL: Infra-red Large and IFS: Infra-red Small
2. Last 15 Hours is programmable from 1-120hours.
3. Pre-fill time is programmable from 1-120 seconds on Large or Small pans
4. Normal Fill is programmable from 1-120 seconds
5. Refill is programmable in 1% increments
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