Check electrode plugs to ensure they are pressed firmly onto the electrode pins. Important: Loose
connections will cause overheating of the cylinder plugs, possibly melting the plugs and/or cylinder.
1. Open the isolating valve in the feed water line to the unit.
2. Make sure the Liebert iCOM is set high enough to call for humidification.
3. Turn on the main disconnect in the primary service feeding the unit and check that unit has
power at the primary terminal block.
4. Push the auto On/Off/Drain Switch to “On.”
Water will start to enter the cylinder through its bottom port and rise in the cylinder to a point determined
by the solid state control circuitry. It is not unusual upon initial start up for the water to fill the cylinder
and cycle on the red high-water sensor light.
The red light simply acts as a safety to shut off the fill valve and prevent overfilling. With the red light on,
the water in the cylinder will continue to heat and, after a few minutes, start to boil. After the boiling of the
water has lowered the water level below the sensor at the top of the cylinder, the red light will go 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.
8.3.1 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 fill cycle, 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.
Vertiv | Liebert CRV Installer/User Guide | 83
To Next Page
Loading...
