TM
PURE Humidifi er Co. EC Maintenance Instructions
The EC Series Electric Humidifi er is designed to provide the best possible operation with minimum maintenance. However,
the humidifi er should be inspected and place on a dedicated maintenance schedule to ensure continued operation of the
humidifi er and its accessories. PURE Humidifi er Co. recommends that the following items be inspected, and/or,
cleaned on a minimum basis of twice a year. If excessive mineral build-up occurs, the maintenance schedule should be
increased.
Maintenance & Cleaning Instructions
Inspect/Maintenance Item
Water Fill Valve
Safety Interlocks
(air fl ow, high-limit)
Immersion Heaters
Humidifi er Cover/Tank
Tri-Probe Sensor
Drain Valve & Drain Piping
Flexible Hose
Procedure to Follow
Check to make sure the fi ll valve is operating properly. If the valve appears
to continually fi ll, check the valve seat and seal (see trouble shooting
instructions).
Check to make sure the safety interlocks (air fl ow, high-limit, etc) will shut
down the humidifi er.
Verify the correct amperage is being drawn by the heating element. Reference
the wiring diagram for correct amperage.
Inspect for any leaks. Repair as required. Remove the mineral deposits from
fl oor of the humidifi er reservoir. If excessive build-up is found, the cover may
need to be removed to facilitate complete cleaning of the humidifi er.
Remove Tri-Probe Sensor from humidifi er (set-screw and o-ring seal) and
inspect for excessive mineral build-up. Inspect plastic housing for cracks.
Probe ends should be cleaned and the probe assembly re-installed.
The drain valve seat and seal should be inspected and cleaned as required.
The drain line and water seal should be inspected and cleaned to ensure free
fl ow of the overfl ow and drain line.
Inspect for cracks or leaks. It is normal for the hose to become hard and
develop a “set”.
Cleaning Instructions
Hard Make-up Water
If utilizing hard make-up water, humidifi er tanks will likely need to be cleaned manually. This can be done from the side-
entry plate or cover. Remove all loose solids from tank and/or exchanger with a wet vacuum or putty knife and bucket. After
removal of solids, replace the side-entry plate/cover. At this point you may wish to add a descaling solution. Contact your
local representative for our easy to use, non-toxic PURE Clean descaling solution.
Softened Make-up Water
If utilizing softened make-up water, help eliminate build-up in the tank simply by adding a descaling solution. Contact your
local representative for our easy to use, non-toxic PURE Clean descaling solution.
DO NOT use Hydrochloric acid-based descalers; this will corrode stainless steel.
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