Chapter 2 Names and Functions of Parts
18
Door packing
Seals the test area to prevent
outside air penetration and inside
air leaks.
Protective grille
Prevents direct contact with the
humidifying heater.
Boil-dry protector
*
Prevents the humidifying heater from
overheating when humidifying water is
low.
Wick pan
*
Supplies water to the wet-bulb wick.
Wet bulb wick
*
Used in detecting wet-bulb
temperature (test area humidity).
There are two holes for the wet-bulb
temperature sensor. Insert it into the
top hole.
Dry-bulb temperature sensor
Detects dry-bulb(test area)
temperature.
Humidifying heater
*
Evaporates water in the
humidifying tray.
Air circulator
Circulates air in the test area.
Support
Supports shelf brackets, shelf and
specimens.
Shelf bracket
Holds shelves. Move the shelf
bracket to adjust the clearance
from the ceiling or other shelves.
Shelf
Shelf for holding specimens.
Withstand load: 5 kg evenly
distributed
Installation pitch: 50mm
Humidifying tray
*
Holds humidifying water.
Drain port
Releases internal pressure buildup
and drains overflow from the
humidifying tray to the outside.
Test Area
Wet-bulb temperature sensor
*
Detects wet-bulb temperature (test
area humidity).
Cable port
: Not provided on LU cabinets
Fig. 2.2 Test area parts
Water Circuit (Heat Exhaust *) Compartment
Ventilation fan
Exhausts condenser and air
circulator heat from the rear of the
cabinet.
Water tank
*
Supplies water to the water circuit.
Wick pan water supplier
*
Supplies water to the wick pan.
Boil-dry protecter
*
Prevents the humidifying heater from
overheating when humidifying water
is low.
Solenoid valve
*
Regulates water flow rate to the
humidifying tray.
Electromagnetic pump
*
Supplies water to the wick pan
water
supplier and humidifying
tray.
Keeps water in the humidifying tray to
a constant level
Door switch
Trips the main power switch when
detecting the water circuit (heat
exhaust) compartment panel in the
open position. (115/220/230V AC
specification only)
Humidifying tray water level
regulator
*
: Not provided on LU cabinets
Fig. 2.3. Water Circuit (Heat Exhaust*) Compartment parts
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