PAGE 16 of 84 HU-SOUTHWEST-1480 GAS-FIRED HUMIDAIRE UNIT
© SAMUEL JACKSON, INCORPORATED 2005 ALL RIGHTS RESERVED
POWDERED ACID DESCALER
Powdered Acid Descaler (Part No. 14000) is a special formulation designed for removing mineral
scale from the piping and spray chamber of the Humidaire Unit. It is supplied in a 50 pound (22.7
kg) pail. Use the Powdered Acid Descaler periodically during the season if excessive scale
buildup is noticed and also near the end of the season. It does not prevent the build up of scale.
Maintaining a properly adjusted and working Water Purge System is the best insurance against
excessive scale buildup and maximum Humidaire Unit performance. If excessive scale build up
continues to be a problem, call the factory for assistance.
Perform treatment sparingly since
excessive Powdered Acid Descaler use will shorten life of water pump shaft seals and water
train components.
TIPS
Humidaire Unit users find that using a treatment of Powdered Acid Descaler during the last day
or so of the ginning season results in a clean machine for the beginning of the next season.
HOW TO USE THE DESCALER
1.
Drain water and sludge from water tank of Humidaire Unit using 2 inch drain outlet.
2.
Clean Water Pump Inlet Screen in tank.
3.
Place 10 pounds (4.5 kg) (about 1 gallon or 3.8 liters) of descaler in the water tank.
4.
Close drain outlet and refill water tank.
5.
Set Purge Valve Control to DISABLE. See
ADDITIONAL SETTINGS
section of
manual and subtopic for
Time Settings
on how to do this.
6.
Resume normal operation for 24 hours.
7.
Drain dissolved minerals and acid from tank using 2 inch drain outlet.
8.
Clean Water Pump Inlet Screen and refill tank with water.
9.
Set Purge Valve Control back to ENABLE.
TIPS
A good way to reduce the formation of scale buildup is to periodically drain the water
tank, flush and refill with fresh water. Small lint fly, dirt, and sediment captured by the
Water Pump Inlet Screen can then be removed. The water purge system cannot remove
these items since they are not circulated through the water pump.
Many Humidaire Unit users find it handy to attach a garden hose with a spray nozzle for
spray chamber cleaning to the hose faucet provided just before the fresh water inlet on
the water tank.
