Pfannenberg EB 130 WT, Operating And Maintenance Instructions Manual, Page: 13 / 212

English
13
CAUTION:
do not utilize oils with sulphur-base additives; the copper-made exchanger could be
damaged (*)
CAUTION:
a suitable filtering system, for the oil to be cooled, has to be adopted, with filtration degree
ranging from 60 to 90 µm (*).
NB (*) should any doubt arise, consult PFANNENBERG Technical Office.
OIL CHILLER w/o pump
Usually, the pumpless CHILLERS are inserted in a circuit already provided with pump. Refer to instructions provided by the
system manufacturer and check that the flow rate and pressure entering the REFRIGERATOR are compatible with the values
set down in the chapter of technical data
OIL CHILLER with pump
Usually, the CHILLERS with pump are utilized to cool an hydraulic system provided with reservoir; therefore, the filling is directly
carried out on the machine. Refer to the instructions provided by the system manufacturer
OIL Chiller Start-up
For Oil chiller is stricltly recommended:
- Contamination level of system fluid should not exceed class 18/15 ( ISO 4406 )
-
to follow stricktly the operating range of pressure and temperature recomended
10. Ambient temperature
When ambient temperatures are above +40 °C (+45°C / 50°C, depending on the model) or below +15 °C, PFANNENBERG
should be consulted. High ambient temperatures reduce Chiller capacity. Low ambient temperatures require special controls.
Special conditions apply when temperatures drop below 0 °C (32 °F). Fluid heaters may be required to prevent freezing and to
hold the fluid in the Chiller reservoir at a constant temperature in order to reduce start-up delays while the fluid warms up to
operating temperature.
11. Start up of the chiller
CAUTION:
WORK ON THE ELECTRICAL AND REFRIGERANT CIRCUITS MAY ONLY BE PERFORMED BY
QUALIFIED PERSONEL.!!!!!!!
NOTE: The following instruction will guide you through the start up procedure in detailed steps. For a
quick commissioning instruction please see appendix A1 or A2 .
NOTE: For PWW unit start up please follow the Appendix A2 and Appendix C (except verification for
phase check of 3-phase models, which is described in this paragraph).
Please consider that secondary circuit is a close loop system which has the pump installed inside to the
unit. Primary circuit is an open loop, and the pump has to be installed from customer outside to the unit.