CytoTherm CT-D4 Посібник - Сторінка 10
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SAFETY FEATURES
WATER LEVEL SENSOR
The unit will display LOW WATER and beep if there is not enough water to cover the level sensor inside the
bath, a screw located 3/4" above the temperature sensor. The heat will also turn off. The water must be
conductive in order for the level sensor to work. Use tap water or add a pinch (0.01 gr.) of salt if you are using
de-ionized or distilled water.
OVER TEMPERATURE
o
The unit will display TOO HOT and emit double-beeps if the temperature reaches 1.0
C above the thawing
temperature. The controls will turn the heaters off. In the unlikely situation that there is a component failure
o
and the unit continues heating, an independent safety thermostat will turn the heating off at 45
C.
SAFETY THERMOSTAT
o
An independent safety thermostat will turn heaters off if the temperature goes above 45
C. It has to be cooled
to 20 C to reset.
FUSING
The main fuses (Fuse-1 & Fuse-2) are located on the Printed Circuit Board and are 8A for 120Vac and 5A for
240Vac AG3 fuses. Correct the cause of the blown fuse.
The transformer has a ¾ Amp slow blow fuse (Fuse-3) on the wires of the 12 Vac winding used to supply the 5
Vdc supply.
ISOLATION
The circuitry is isolated from the power lines by a transformer and from the heaters by an opto-coupled solid
state relay.
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