Huber 705 - Replacing Coolant Hoses; Clean Liquefier Fins (Air-Cooled Temperature Control Unit)

Service/maintenance
Chapter 7 OPERATION MANUAL
V2.0.0en/09.06.16//15.09 Unistat®
85
 Fill the temperature control unit with thermal fluid, as described on page 64 in section »Filling
and venting externally closed application« or on page 69 in section »Filling and venting exter-
nally open application«.
 Vent the temperature control unit as described on page 64 in section »Filling and venting exter-
nally closed application«. An externally open application does not need to be vented.
 Start the “degassing” function as described on page 66 in section »Degassing externally closed
applications«. An externally open application does not need to be off-gassed.
 Restart the temperature control unit in normal mode.
7.3.2.2 Replacing coolant hoses
PROCEDURE
 Drain the cooling water as described on page 93 in section »Draining the cooling water«.
 Replace the defective coolant hoses. When disposing of them, observe page 16, section »Proper
disposal of resources and consumables«.
 Reconnect the temperature control unit to the building’s cooling water supply. Proceed as de-
scribed on page 31 in section »Temperature control units with water cooling«.
 Restart the temperature control unit in normal mode.
7.3.3 Clean liquefier fins (air-cooled temperature control unit)
Manual cleaning
RISK OF BEING CUT ON THE LIQUEFIER FINS
 Wear suitable cut-resistant gloves for cleaning work.
 Depending on the ambient conditions, use cleaning equipment such as vacuum cleaners and/or
a hand brush/brush. Follow the local regulations when cleaning. Do not clean the liquefier fins
in a clean room with items like a brush and do not use a vacuum cleaner without an extra-fine
particle filter.
Cleaning using pointed or sharp-edged tools
DAMAGE TO THE LIQUEFIER FINS
 Clean the liquefier fins using suitable cleaning appliances.
Make sure there is adequate ventilation (removal of waste heat, fresh air supply) for the tempera-
ture control unit, in case of air cooling, maintain wall clearance (see page 22, section »Exemplary
illustrations of the cooling variants« and page 27, section »Ambient conditions«).
The liquefier fins must be cleaned (dust) from time to time as only then will the temperature con-
trol unit perform at its maximum cooling capacity.
Identify the position of the ventilation grille, usually located on the front. With some temperature
control units, the ventilation grilles on the side wall, rear or on the underside (table units) of the
temperature control unit.
PROCEDURE
Ventilation grille on the front/rear or on a side wall
 Switch off the temperature control unit. Turn the >Mains isolator< [36] to the “0” position.
 Disconnect the temperature control unit from the current supply.
 Remove the ventilation grille to create unhindered access to the liquefier fins.
 Clean the liquefier fins using suitable cleaning appliances. Observe the local regulations and
ambient conditions when selecting cleaning devices.
 Make sure the liquefier fins are not damaged or deformed as this will impair the air flow.
 Re-mount the ventilation grille after cleaning work.
 Connect the temperature control unit to the power supply.
 Switch the temperature control unit on.