GENERAL DESCRIPTION
Page 2-10
HUMIDITY CHAMBER COMPONENTS (OPTIONAL)
The chamber area contains the remaining components necessary to generate and maintain humidity levels
within the work space. The following is a description of these components (see Figures 4 and 5).
A. Solid State Humidity Sensor
DO NOT RELOCATE. It has been located at the factory for maximum performance.
This unit utilizes a solid state relative humidity sensor which takes the place of the traditional
wet bulb and dry bulb sensors. The solid state sensor is a highly accurate quick responding
direct RH measuring device. It feeds an electronic signal to the controller that in turn controls
and displays direct relative humidity.
B. Humidity Wet Coil
This coil is cooled by the R-404A (System 1) system and functions as a dehumidi! cation coil.
Dehumidi! cation of the chamber air is accomplished by condensing water from the chamber air
onto the refrigerated surface.
C. Wet Coil Pan
The wet coil pan is used to collect moisture from the wet coil and dispense it through the
chamber drain.
D. Recirculating Water
The Recirculating Water Reservoir Option is a fully integrated accessory that requires only
minor installation. Just ! ll the reservoir with water to the ! ll line, connect a drain line to the
plastic ball valve located at the bottom rear of the unit and the system is ready to operate.
Typical System Operation:
- A water pump (located under the reservoir) turns on when the humidity
function is turned on and pumps water from the reservoir to the boiler
- The water vapor condenses into a liquid and runs down the chamber drain, back to the
reservoir
- This cycle is repeated over and over
- The " oat switch (located on top of the reservoir) turns the pump off when the water level in
the reservoir is too low and needs to be replenished, preventing damage to the pump
Maintenance:
- Drain and clean the reservoir every 2 months or sooner as required by usage and water
conditions
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