Anton Paar TTK 600, Reference Manual

Page: 37 / 85

5 Putting TTK 600 into Operation
D52IB001EN-G 37
When you are using the liquid nitrogen cooling
equipment:
• Make sure the exhaust hose of the Safety Box is
connected to an exhaust gas system or ends in
a sufficiently ventilated area.
• Check the filling level of the Dewar.
If you are using the compressed-air cooling equip-
ment:
• Make sure that the air cooling unit is fixed on the
TTK 600 cooling device connector and that the
compressed-air hoses are attached firmly to the
air cooling unit and CCU 100.
5.5 Turning on the Instrument
If possible, switch on CCU 100 with the cooling wa-
ter turned OFF in order to test the water flow monitor
when starting operation.
Proceed as follows:
1. Press the mains switch on the front panel of
CCU 100.
The micro controller of CCU 100 will initialize:
• All display elements and all LEDs on the front
panel will light up for a few seconds.
• After a few seconds, the micro controller
switches to the normal mode of operation.
CCU 100 is in the following status:
- the temperature set point (SP) is set to the
default value of 25 °C
- the HEATER is off
- the Error LED is flashing
- the display shows E03 to indicate that there
is no water flow
2. Turn on the cooling water supply.
- The alarm message disappears and the
flashing of the Error LED stops.
3. Check whether the correct Cooling Type param-
eter is set, as described in chapter 6.3:
LN2…for liquid nitrogen cooling
CAir… for compressed-air cooling
4. Press the HEATER button to start control of the
sample holder temperature.
If the instrument condition is OK, the green HEAT-
ER LED lights up and all error messages disappear.
The sample holder is now heated to 25 °C with the
default heating rate SPR.
If the status of the system is not OK, an error code
appears on the display, the controller remains in
Standby mode (flashing HEATER LED) and the Er-
ror LED is flashing.
WARNING
Cold surface
Liquefied nitrogen can cause freezing of tissue,
or cryogenic burns, similar to frostbite to eyes or
skin upon contact. Always wear protective cloth-
ing (eye and face protection, thermally insulating
gloves) when handling the Low Temperature
Equipment or the liquid nitrogen container.
Follow all instructions given in appendix E and in
the instruction manual for the liquid nitrogen con-
tainer.
WARNING
Risk of injury.
Release of large amounts of nitrogen can lower
the oxygen concentration in the room and lead to
asphyxiation.