Operating and Maintenance Instructions - Chiller - Series EB 210 - EB 440
© Pfannenberg GmbH
Page 31 / 50
EN
5.3. Set up the chiller
Chillers are designed for indoor installation only (not outdoor).
For proper operation of the unit the following points must be observed.
• Place the chiller in an area shielded from any possible manufacturing residuals (shavings, dust, etc.) and well-
ventilated, away from heat sources and direct influence of sun light.
• Chillers should be placed in an area without chemical and corrosive substances, flammable gas, hot air and
liquid coming from nearby processes.
• Position the unit as close as possible to the user system, to avoid pressure losses along the hydraulic
connection pipes.
• Use the adjustable feet (where installed) to level off the unit.
• Provide enough space for access and air circulation, see chapter
Technical data
.
• The chiller can optionally be equipped with a polypropylene air filter which is designed for dry dust. In case of an
oil mist environment a special washable aluminum filter is required.
CAUTION
Malfunction due to unspecified environmental conditions
Standard units are designed for indoor use only. They are not able to handle any conditions such like low
temperatures, high humidity or sun light which are covered under the term “outdoor”. For a standard unit the
outdoor installation is absolutely forbidden, even if under a roof.
Only special designed outdoor units can be used in outdoor installation.
For regular maintenance or adjustment, the chiller shall be located between 0.3 m and 1.0 m above the
servicing level.
5.4. Connect the chiller to the hydraulic pipes
For proper operation of the unit the following minimum requirements for the hydraulic circuit must be observed.
• The chiller has been cleaned by means of specific cleaning products. Make sure that the pipes used do not
contain dirt or processing residues; if in doubt, perform one or more cleaning cycles.
▪
Install a filter on the chiller inlet return pipe, with metal mesh of 100 μm.
▪
Flush the system with FUCHS “Maintain professional washer LI” (Pfannenberg part number:
46783000135
– 25 kg Tank) at least for 10 minutes.
Dilution percentage:
2 % Professional Washer
98 % Water
(it is recommended to use demineralized water)
▪
Clean the filer if necessary and remove it after finishing the cleaning procedure.
• Use pipes with same diameter of the circuit connections (connection size see chapter
Technical data
).
NOTICE
Malfunction due to incorrect hydraulic connection
• For the hydraulic connection please refer to the chapter
Technical data
or the enclosed
hydraulic diagram
.
• The flow rate and the fluid circulation direction must be respected during connection in accordance with
INLET-OUTLET identification plates.
Recommendation for a proper function
• It is recommended to install one shut-off valve at each connection inlet and outlet to isolate the chiller from
the system.
• It is recommended to install a filter on the chiller inlet return pipe, with metal mesh of 100 μm.
• It is recommended to insulate the pipes to prevent condensation.
• If user’s circuit is at least 500 mm over the hydraulic connection of the chiller, the fluid in the piping may drain
back and overflow the chiller reservoir if the chiller is shut down. This can be prevented by using a check
valve in the supply line, and either a solenoid valve on the return line.
