Preventive Maintenance; Rotating Part; Labtech Water Chiller - Labtech EV400 Series User Manual

EV400 SERIES – User Manual

Preventive Maintenance

ROTATING PART

Use tepid diluted HCI to clean the glass vessel if necessary.
To guarantee the longevity of this unit, please disconnect the unit from the power socket after switching off the
unit.
In normal working conditions, the sealing ring should be replaced every two years.
If it is difficult to lift up/down but an internal mechanical driving sound could be heard, please adjust the tension
steel wire according to following instructions (see the below picture):
First, lay down the unit. There is a yellow tension block under the base. Rotate clockwise the two M6 tension
screws on it with a hexagonal wrench to tighten the steel wire. Too tight steel wire may cause tension failure or
noise.

LABTECH WATER CHILLER

Reservoir Cleaning
Periodically inspect the fluid inside the reservoir. If cleaning is necessary, flush the reservoir with a cleaning fluid
compatible with the circulating system and the cooling fluid.
The cooling fluid should be replaced periodically. Replacement frequency depends on the operating environment
and run time.
Before replacing the cooling fluid ensure that it is at a safe handling temperature.
Condenser Cleaning
For proper operation, the unit needs to pull a substantial amount of air through the condenser. Dust and/or
debris accumulated on the fins of the condenser will lead to a loss of cooling capacity. Optional air filters are
available, if needed please contact the Labtech Service Team
Periodic vacuuming of the condenser fins is necessary. The cleaning frequency depends on the operating
environment. After the initial installation we recommend a monthly visual inspection of the condenser. After
several months, the cleaning frequency will be established.
Use care when cleaning the condenser fins, they can easily bend.
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