Maintenance And Cleaning; Preventive Maintenance - HYDAC International OK-EL Installations- Betriebs Und Wartungshandbuch

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11. MAINTENANCE AND CLEANING

HYDAC coolers generally require low maintenance if installed and used
properly. The following instructions are only a guideline, as individual
operating conditions will determine the appropriate interval for cleaning
and maintenance.

PREVENTIVE MAINTENANCE

The following preventive maintenance should be carried out at regular
intervals to ensure long lifetime:
z Check the cooler is not damaged. Replace damaged components
immediately (contact our After Sales Department).
z Check for abnormal noise or unusual vibrations.
z Ensure the cooler is securely mounted.
z Check the mounting bolts are securely tightened.
z Ensure that the cooler is free from leaks. Damaged cores
or damaged seals must be replaced or repaired immediately.
z Make sure that the warning labels are in good condition.
Replace any damaged / missing label immediately.
z Check the electrical installation. This must be done by a qualified
electrician only.
z Check the cleanliness of the cooling element. Dust, debris, etc. will
reduce the cooling capacity. Clean the cooler if necessary.
CLEANING
Air side
A dusty environment might necessitate periodic cleaning of the heat
exchanger. A contaminated / clogged cooling element leads to a reduction
of the cooling capacity. Its condition should be checked as part of daily /
weekly / monthly inspection.
ATTENTION
Risk of injury.
Prior to cleaning, disconnect all power supplies to the motor.
ATTENTION
The cooler might be hot! Please allow it cool down before cleaning.
The cooling element can be cleaned with a soft brush, compressed
air or water jet.
ATTENTION
Be careful not to damage the air-fins of the element.
This reduces the performance of the unit.
When cleaning the exterior of the cooler using water, disconnect from
power supply. Comply with the electric motor protection standard. Motor
and electronic devices must be protected during the cleaning process.
The air fins of the core can be cleaned by blowing through with
compressed air.
If necessary, a high-pressure washing system and degreasing agent can
be used.
A pressure washer must be set to moderate working pressure and the
water jet stream should be directed parallel to the cooling air fins (vertical
to the cooler face area) to prevent any damage.
Cleaning agents can increase the cleaning effect. Please note that any
detergent must be compatible with aluminum.