10.5 Control cabinet: Clean or renew the filter mat
A filter mat is placed behind every ventilation grille. Filter mats protect the control cabinet from in‐
gress of dirt. If the filter mats are clogged, adequate cooling of the components is no longer ensur‐
ed. In such a case, clean or replace the filter mats.
Material Warm water and household detergent
Spare parts (as required)
Precondition The power supply isolator is switched off (all poles),
the device is locked off,
the absence of voltage has been verified.
Fig. 22 Switching cabinet ventilation
1 Ventilation grille
2 Filter mat
Frequency-controlled machines (SFC) have ventilation grilles and filter mats in both the machine
and the frequency converter control cabinets. Maintain all filter mats at the same time.
1. Carefully remove the ventilation grille and take out the filter mat.
2. Beat the mat or use a vacuum cleaner to remove loose dirt. If necessary, wash with lukewarm
water and household detergent.
3. Replace the filter mat if cleaning is not possible or if the change interval has expired.
4. Insert the filter mat in the frame and latch in the ventilation grille.
10.6 Option K1
Cooler maintenance
Regularly clean the cooler. This ensures reliable cooling of the machine and the compressed gas.
The frequency is mainly dependent on local operating conditions.
A leaking cooler results in loss of cooling oil and compressed gas.
Clogged coolers are indicative of unfavourable ambient conditions. Such ambient conditions
clog the cooling air ducts in the machine's interior and the motors resulting in increased wear
and tear.
➤ Have the authorised KAESER Service clean the cooling air ducts.
10 Maintenance
10.5 Control cabinet: Clean or renew the filter mat
ESD_2C_10357405_10–LIN_00 E
Service Manual Screw Compressor
ESD 442/14 bar (abs) SFC SIGMA CONTROL 2
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