Commissioning
Chapter 2
OPERATION MANUAL
V2.2.0en/09.08.21//17.12
Unichiller® eo Desktop
29
To minimize cooling water consumption, Huber temperature control units with water cooling are
equipped with a cooling water regulator. It limits the flow of cooling water to the amount required
by the current load situation. If only a low cooling capacity is requested, only a small amount of
cooling water is consumed. It cannot be ruled out that cooling water flows when the machine is
switched off. Shut off the cooling water supply to the temperature control unit even for shorter
downtimes (e.g. overnight).
Preparing the temperature control unit with water cooling:
In the event of outdoor installation, the responsible body must ensure that the cooling water
supply and return lines are laid frost-protected. The cooling water temperature must not fall below
3
°C. At ambient temperatures below 3
°C, the cooling water supply must be heated.
The minimum pressure differential in the cooling water circuit and the recommended cooling
water inlet temperature can be found on the data sheet.
→
Observe the wiring diagram.
→
PROCEDURE
Close (if fitted) the
>Cooling water drain<
[15].
Connect the
>Cooling water outlet<
[14] to the water return flow. A seal must be used.
Insert the suction strainer (dirt trap) into the
>Cooling water return<
[13].
Connect the
>Cooling water inlet<
[13] to the water supply. A seal must be used.
Leaking cooling water connections
DAMAGE BY ROOM FLOODING
Slowly open the building-side shut-off valves of the cooling water supply and return line.
If water leaks from the cooling water connections: shut off the cooling water supply and return
line immediately.
Provide leakproof cooling water connections.
Open the shut-off valves in the water line on the temperature control unit (if present) and on the
building side.
Check the connections for leaks.
Connection diagram
Installing a suction
strainer (table-top
models only)
