Service/maintenance
Chapter 7
OPERATION MANUAL
V2.3.0en/07.06.19//17.12
Unichiller®
75
Cooling*
Description
Maintenance
interval
Comment
Person re-
sponsible
L/W
Check air filter mats
Determine accord-
ing to ambient
conditions.
Check all air filter mats of the
temperature control unit. Clean
the air filter mats as needed or
replace.
Responsible
body and/or
operators
*L = Air cooling; W = Water cooling; U = Applicable only for Unistats
7.3.2
Replacing temperature control or coolant hoses
Replace defective temperature control and/or coolant hoses
before
turning on the temperature
control unit.
7.3.2.1
Replacing temperature control hoses
PROCEDURE
Drain the temperature control unit as described on page 63 in section
.
Replace defective temperature control hoses. When disposing of them, observe page 15, section
»Proper disposal of resources and consumables«
.
Reconnect your external application as described on page 31 in section
.
Fill the temperature control unit with thermofluid as described on page 61 in section
venting externally closed application«
.
Vent the temperature control unit as described on page 61 in section
.
Restart the temperature control unit in normal mode.
7.3.2.2
Replacing coolant hoses
PROCEDURE
Drain the cooling water as described on page 82 in section
.
Replace the defective coolant hoses. When disposing of them, observe page 15, section
disposal of resources and consumables«
.
Reconnect the temperature control unit to the building’s cooling water supply. Proceed as de-
scribed on page 28 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 20, section
illustrations of the cooling variants«
and page 25, section
).
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.
