EKOM DK50 3x4VR/M, User Manual

Page: 39 / 64

OPERATION
06/2022 39 NP-DK50 3x4VR_M-AD-A-EN-3_06-2022

Fault - motor winding temperature fault
The message on the display (ERROR)
and blinking ALARM indicator indicate
which of the aggregate motors has
malfunctioned (open thermal overload
switch (B11 - B13) inside the motor
winding (M1 - M3). The malfunction in the
air pump may be mechanical or electrical.
Once the malfunction is remedied
(cooling, repair or replacement; the
thermostat must be on), the ALARM
indicator turns off and the display no
longer shows the alarm.
Medium priority alarm signals
have priority over maintenance
interval signals.
As such, the light will indicate
an alarm from any of the air
pumps.
17. SWITCHING OFF THE COMPRESSOR

Use the main switch, Q10, to switch off the
compressor for maintenance or other
reasons; the switch also functions as a
central stop button. The compressor is
disconnected from the mains with the
exception of the mains terminal block X0.
Attention:
- Power terminals X0 remain energised
even when main switch Q10 is in the
“0” (off) position.

Vent the air tank by disconnecting from the
central compressed air circuit and opening
the outlet valve (7) (Fig. 1) or the drain
valve.
Switching off the AD dryer

Turn off the compressor per the previous
chapter.

Open the venting plug (Fig. 21) to vent the
pressure in the dryer chambers.