Huber MPC Minichiller 280, Manual

Page: 49 / 60

Service/maintenance
Chapter 7 OPERATION MANUAL
V2.4.0en/09.08.21//1.30
Minichiller®
49
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 . → Page 20, section »Exemplary
illustrations of the cooling variants«
and → Page 24, 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

Turn off the temperature control unit.

Disconnect the temperature control unit from the power 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 appliances.

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.

Turn on the temperature control unit.
PROCEDURE
Ventilation grille on the underside (table-top units)
Cleaning of liquefier fins at the underside when the temperature control unit is filled
DAMAGE CAUSED BY THERMAL FLUID PENETRATING THE TEMPERATURE CONTROL UNIT

Empty the temperature control unit before cleaning the liquefier fins at the underside of the
temperature control unit.

Switch off the temperature control unit.

Disconnect the temperature control unit from the power supply.

Drain the thermal fluid from the temperature control unit. → Page 42, section »Draining exter-
nally closed applications« .

Tilt the temperature control unit to remove the grille (if available) in front of the liquefier fins.

Clean the liquefier fins using suitable cleaning appliances. Observe the local regulations and
ambient conditions when selecting cleaning appliances.

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.

Refill the temperature control unit with thermal fluid. → Page 39, section »Filling and venting
externally closed application« .
7.2.4 Clean hat-type strainer (dirt trap) (water-cooled temperature control unit)
Building’s isolating valves are not closed
PROPERTY DAMAGE CAUSED BY FLOODING OF ROOMS

Close the building’s isolating valves in the cooling water supply and return lines.

For table-top models, place a collection container below the
>Cooling water drain<
[15]. Ob-
serve the wiring diagram: → From page 59, section
»Annex«
.
The strainer at the cooling water inlet must be inspected and cleaned on a regular basis, depend-
ing on water quality.