Nortec Industries MES-U manual Capacity Pot, Cylinder Replacement, Figure #3 Adjustable Pot

out and the fill solenoid will again open until the cylinder is again full.

This cycling of the red light and fill valve will continue until the unit’s full output capacity is reached after which the water level will automatically lower itself in the cylinder. (The increased concentration allows for lower electrode coverage while maintaining the same output.) When a stabilized condition is reached the water will be boiling close to the cylinder seam level. The solid state circuitry will maintain the proper concentration in the cylinder by introducing short drains only when necessary.

If the cylinder is manually drained the above process will repeat itself.

Low Water Conductivity

Should normalization of the unit be required immediately after start-up, the installer may speed up the process by artificially increasing water conductivity. During a fillcycle, the installer should dissolve half a teaspoon of table salt (no more) in a cup of water and add it to the cylinder by means of the fill cup attached to the plumbing section.

Open the plumbing compartment and add salt solution through cylinder outlet. Excessive amounts of salt will result in erratic operation of the unit; however, normalization of the unit will occur automatically through the solid-state control sequence.

CAPACITY ADJUSTMENT

Figure #3

Adjustable Pot

Adjustable

Capacity Pot

The MES-U series of humidifiers come with

adjustable capacity (AC) PC boards. These boards have a pot labeled 20 to 100%. See Figure # 3.

CYLINDER REPLACEMENT

After an extended period of operation, in accordance with life expectancy information, the

- 3 -

cylinder is completely used as indicated by the red high water sensor light illuminated on the cabinet. When this condition is reached, a new replacement cylinder is to be installed.

NOTE: Red light may come on during initial start-up but does not mean cylinder replacement. See Start Up and Operation section of this manual.

Consult factory or agent for replacement. Quote the cylinder model from the white 3-digit label on the cylinder or quote model, voltage, and serial number from unit specification label.

WHEN TO REPLACE THE STEAM CYLINDER

The steam cylinder is disposable and must be replaced at the end of cylinder life. Cylinder life is dependent on water supply conditions and humidifier usage. Failure to replace the cylinder at the end of cylinder life may result in unit damage. NORTEC is not responsible for any damages resulting from, or attributable to, the failure to replace a used cylinder (see Manufacturer’s Warranty).

Figure #4

Cylinder Removal

REMOVING THE OLD CYLINDER

￿See Figure # 4.

1. Turn off the water supply to unit.