Bruker BVTE3900, Technical Manual

Page: 15 / 41

Technical Manual Version 003 BRUKER 15 (41)
Drain the tank
number 58477). This coolant gives a protection against corrosion of the cooling
system and production of algae in the water.
Inside the tank a mark shows the upper level of coolant.
The coolant must be changed every year.
Drain the tank 2.6
•
Turn off the power switch.
•
Turn the flow valve on position «DRAIN». Wait a few minutes until you hear a
bubbling in the tank, during that the time the purge of the probe head is carried
out.
•
Turn the flow valve now on position «FLOW»
•
Disconnect flexible hose «IN» from probe.
•
Put the hose’s end in a bucket and start the pump. Wait until the tank is empty.
When the cover of the tank is removed from tank, the safety level switch disa-
bles the pump. To enable pumping lay the top cover backwards.
•
When the tank is empty, switch off the BVTE3900. Turn the switch on position
«DRAIN» for a while, the rest of liquid in the hose will be drained.
High temperature operation 2.7
•
See first the technical manual of your high temperature probe.
•
The cooling liquid circuit must be connected on probe.
•
Turn the flow valve on position «FLOW».
•
Switch on the BVT3000 and BVTE3900.The pump starts and coolant circu-
lates through the probe.
•
The purpose of the vacuum pump is to extract the hot gas from the probe in or-
der to reduce temperature gradient along the sample tube. Adjust the vacuum
with the knob located on top. Set the flow rate to approximately 500 litres/hour
(flowmeter ball at 1/3 of full scale).
Low temperature operation 2.8
•
The BVT3900 is suitable for working at low temperature. Making water circu-
lating in the probe avoids freezing of the probe head.
•
The top of the LN2 evaporator tank is equipped with a cap. The cap must be
removed and the flexible hoset must be coupled to the LN vent nipple. In that
way the tank is always at atmospheric pressure whenever the BVTE3900 is
switched off to avoid freezing of probe when the BVTE3900 is off, while the
evaporator is on.
•
Connect the transfer line from LN tank to probe.
•
Connect the LN2 heater on BVT3000.