Ambient Temperature; Start Up Of The Chiller - Pfannenberg Rack Serie Bedienungsanleitung

PFANNENBERG chillers (in the std oil version) are designed to work with the following oil viscosity:
•
Fluids and oil's with viscosity ranging between ISO VG10 and ISO VG32 (*)
NOTE: Please contact Pfannenberg Group if your oil is outside to the standard range
CAUTION:
do not utilize oils with sulphur-base additives; the copper-made exchanger could be damaged
(*)
CAUTION:
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
-

9 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.
10

Start up of the chiller

CAUTION:
QUALIFIED PERSONEL.!!!!!!!
70040-071_01-F_(Op._Manual_EN-DE-ES-FR-IT-RU)
English
a suitable filtering system, for the oil to be cooled, has to be adopted, with filtration degree
WORK ON THE ELECTRICAL AND REFRIGERANT CIRCUITS MAY ONLY BE PERFORMED BY
13