Aqua-Hot AHE-200-02S-24 VDC Installation Guide download pdf (Page 51)

7. Service During Use

Preventive maintenance

To ensure a long and problem-free use of the frequency converter we recommend that you per-

form preventive maintenance.

Cleaning of filters IP 54 (NEMA 12)

Filters in the door must be serviced on a regular basis. The interval must be defined from instal-

lation to installation to ensure proper function based on the dust contents in the air.

Cleaning of the heat sink

During normal use it is not necessary to clean the heat sink. The forced airflow will keep the fins

free from dust and other substances. In case the environment is very dusty, the heat sink can be

cleaned by blowing compressed air over the heat sink from the top or the bottom of the frequency

converter.

Remember to switch off the frequency converter before cleaning.

Checking connections

Measuring the temperature on power connections with a thermal camera or infrared meter is

recommended as a preventive maintenance activity. Early detection of changes in the power con-

nections to the frequency converter allows relevant action to avoid overheating connections and

in worst case stops.

Checking temperatures and running conditions

We recommend that you note the typical data during operation like:

• Motor current at specified frequencies, i.e. 40 and 50 Hz

• Heat sink temperature at a defined ambient temperature

• Intermediate voltage

• ....

Based on these registrations it is possible to follow trends that indicate if maintenance is necessary

or other changes to the operating conditions.

VLT

5000/6000/8000

High Power Installation Guide

7. Service During Use

MI.90.J2.02 - VLT

is a registered Danfoss trademark

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Aqua-Hot AHE-200-02S-24 VDC Installation Guide Page 51