Operating Conditions; Before Start-Up - HYDAC International OK-EL Installations- Betriebs Und Wartungshandbuch

5. OPERATING CONDITIONS

The following operating conditions should never be exceeded:
z Min. / Max. process liquid temperature:
+20 to +130 °C
z Min. / Max. ambient temperature:
-20 to +40 °C for standard coolers
z Viscosity: See product catalogue in accordance with the configuration
z Max. dynamic working pressure for oil coolers:
please refer to the data label on the cooler.
z Cleanliness class ISO 4406-1999 – 23/21/18 (NAS 12).
To reduce the effect of pressure peaks and/or cold start problems on the
cooling element, optional devices [IBP/IBT] can be used together with
special cooling elements (see Accessories Catalogue).
ATTENTION
These devices cannot provide complete protection for the cooling
element. The customer must check that pressure peaks do not
exceed the values indicated above.
WARNING
The product must not be subject to vibration levels exceeding
4.5 mm/s on each axis.

6. BEFORE START-UP

Before starting the cooler:
z Check that the cooler is securely mounted and correctly connected.
z Check that all cooler parts are free from damage.
z Check that the fan rotates freely.
z Check that inside the housing there are no parts that could be thrown
around and cause injuries to persons or damage to property.
z Check that all electrical connections are made according to the motor
data sheet (inside the terminal box).
z Check that the cooler is fitted with an earthing system.
z Check that hoses are properly attached and tight (refer to Table 1
for the max. permitted torque rating on the threaded connections).
HYDAC recommends the following:
z Operate the cooler only with fluids listed under §10.
z Filter the fluid before it passes through the cooler.
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