GeneralAire DS20 Elite Steam - Manual (Page 18)

18
10. Maintenance And Spare Parts
Replacing The Cylinder
WARNING: the cylinder may be hot. Allow it to cool before touching it or use protective
gloves.
To access the cylinder:
Completely drain the water contained in the cylinder (see Shut-down);
Turn the humidifier off and open the external disconnect;
Open and remove the cover (see Removal and reassembly of the front cover);
Remove the steam hose from the cylinder outlet;
Disconnect the electrical connections from the power and high level electrodes;
Unlock the cylinder from its holding arm and lift it up to remove it;
Insert the new cylinder in the humidifier by performing the previous operations in reverse.
(Make sure electric connection is tight, failure to do so may cause equipment damage, fire, or
bodily injury.)
Maintenance Of The Other Hydraulic Components
WARNINGS:
• When cleaning the plastic components do not use detergents or solvents;
• Scale can be removed using a solution of 5% phosphoric acid and then rinsing with
water (Lime-A-Way or CLR may also be used).
The steam humidifier has just one part that requires periodical replacement: the steam
production cylinder. This operation is necessary when mineral deposits that form inside the
cylinder prevent the sufficient passage of current. This situation is displayed by the control with an
alarm signal. The frequency of this operation depends on the supply water: the higher the content
of mineral, the more frequently the cylinder will need
replacing.
Cleaning The Fill valve
After shutdown and removal of the steam cylinder, shut off
the water supply to the humidifier, disconnect the water
supply and remove the fill valve from the humidifier.
Remove the inlet strainer by reaching up into the fill valve
inlet with a pair of needle nose pliers and pulling out the
strainer by its tab. Clean the fill valve and inlet strainer using
the same solution as used to clean the steam humidifier, but DO NOT soak the solenoid coil in
fluid. Reinstall the fill valve.
WARNING: When cleaning the fill valve, do NOT poke or probe flow regulator with any
object which may enlarge the orifice. The flow regulator must meter water flow precisely or
shortened cylinder life may result.