C.B.S. Scientific DGGEK-2401 - Manual (Page 10)

10
Cipher DGGE Instructions 2/28/14
2 3 4 Controller Operation
2 3 4 a Reservoir Liquid Level
Fill the reservoir with the appropriate buffer. The DGGEK Systems are designed to be used
with reagent buffers such as 1xTAE or 1xTBE. On Circulating Baths, the liquid level should
be sufficient to cover the heating coils, pump, over-temperature sensor, and at least one inch
(25mm) of the temperature sensor. On Immersion Circulators, the liquid level should be suf-
ficient to fully immerse the heater coils, over-temperature sensor, and pump outlet nozzle.
2 3 4 b Power
An IEC power cord is provided with the Circulator. This power cord should be plugged into
the IEC receptacle on the rear of the Controller and then plugged into a properly grounded
outlet. Make sure that the power outlet is the same voltage and frequency indicated on the
identification label on the back of the Controller. The use of an extension cord is not recom-
mended. However, if one is necessary, it must be properly grounded and capable of handling
the total wattage of the unit. The extension cord must not cause more than a 10% drop
in voltage to the Circulator. Once the unit has been connected to an appropriate electrical
outlet, place the Circuit Breaker/Power Switch on the rear of the Controller in the ON position.
Four decimal points (….) will appear on the digital display. DO NOT place the Power Switch
on the front of the Controller ON until the Safety Set has been adjusted to the desired tem-
perature (see 3.6 below).
Indicated Voltage:
Volts/Phase/Frequency Operational Voltage Range Phase Frequency
100/ 1 / 60 90 to 110 Volts single 60 Hz
100/ 1 / 50 90 to 110 Volts single 50 Hz
120/ 1 / 60 110 to 130 Volts single 60 Hz
230/ 1 / 60 208 to 230 Volts single 60 Hz
240/ 1 / 50 220 to 240 Volts single 50 Hz
2 3 4 c Setting the Safety Set Set Point - NOTE: DGGEK is factory set to 80ºC
The Safety Set feature automatically disconnects Controller power to the heater and pump in
the event that the reservoir liquid level drops too low or the Controller fails. The Safety Set is
user-adjustable between approximately 40° and 210°C. It should be set at least 5°C higher
than the Software High Limit temperature. Use a flat blade screwdriver to rotate the Safety
Set Indicator Knob to the desired temperature. Do not force the knob beyond the stops at ei-
ther end of the temperature value range. Once the Safety Set temperature has been set, turn
power to the Controller ON by pressing the Power Switch on the front of the Controller. The
pump will begin operating, the display will flash the current temperature set point (tx.xx), the
°C LED will light, and the current bath temperature will appear on this display. Pump speed
selection is made using the Pump Speed Selection Switch on the rear of the Controller (see
Section 2.3 or 3.3). If power is disrupted because the Safety Set temperature was exceeded,
place the Circuit Breaker/Power Switch in the OFF position, press the Safety Set Reset But-
ton, correct the problem (low liquid level, incorrect Safety Set temperature, etc.), and then
restore power. Activation of the Safety Set during normal operation will display a fault (FLt 3)
on the readout.
2 3 4 d Selecting Temperature Units
The control set point and actual bath temperatures may be displayed in either °C or °F. The
factory-default is °C. To change from °C to °F, place the Circuit Breaker/Power Switch on the
rear of the Controller in the OFF position and then press and hold the P2 Button while turning
the power back ON.