TM
Non-INTAC
®
PLC Startup Procedure
Start-Up Procedure
_____ 1. With the power “off ”, set the switch on the control
board to the “Stand-by” position (the control board
is located within the humidifi er control panel door).
_____ 2. Make sure the manual drain valve lever (located
on the front of the drain valve) is in the “automatic”
position.
_____ 3. Turn the controlling humidistat to the lowest
setting (no call for humidity).
_____ 4. Turn the electric power “on” to the humidifi er.
The “Power” LED light on the controller should be
illuminated.
_____ 5. Set the switch on the control board to the
“Normal” position.
_____ 6. Open the water supply on/off control valve (by
others) and allow the humidifi er evaporating
chamber to fi ll to the proper level.
_____ 7. After the humidifi er is full of water, the “Water
Level Full” LED will illuminate. Turn the humidistat
up to call for humidifi er demand.
_____ 8. Make sure all the optional safety switches are
satisfi ed (airfl ow proving switch, high-limit
humidistat, etc).
_____ 9. The heater(s) should energize on a call from the
humidistat.
_____ 10. Verify the low water safety circuit by closing the
water supply and opening the manual drain
lever on the drain valve. As the humidifi er tank is
draining, the “Water Level Full” and “Heater
Energized” lights should go out and you should
hear the contactor drop out when the low water
level is reached; this indicates the low water
safety circuit is operational. This should only take a
couple of minutes maximum.
_____ 11. Close the drain valve and allow the humidifi er
to fi ll to the proper level.
_____ 12. Check operation of optional fi eld-installed
safety switches (airfl ow proving switch, high-limit
humidistat, etc.) to make sure that they turn the
power off to the control circuit power. The safety
switches should shut off the humidifi er heaters
whenever one or more of the optional safety
switches create an “open circuit”.
_____ 13. Check heater amperage draw by testing and
recording voltage and amperage in each phase.
Readings should match the factory heater
nameplate.
Amps A:_______ Amps B:______ Amps C:______
_____ 14. Inspect installation for leaks by operating
humidifi er at a full rolling boi. This may take up to
15 minutes from a cold start. Any leaks should
be sealed. Just tightening a pressure clamp
will not work if the gasket is not properly positioned
between the sealing surfaces. If necessary, remove
the cover, reseat gasket, and replace the cover.
A small amount of adhesive (super glue,
gorilla glue, spray adjesive, etc) to hold the gasket
in place while repositioning the cover will aid in this
process.
_____ 15. After the unit is producing steam, check and
retighten all hose clamp connections in the system
and make sure they are torqued to 35-40 in-lbs.
There are 6 clamps total inside the cabinet.
Signature:_______________________ Date:_________
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