Storch Airless ST 550 Mode D'emploi page 220

Step 1:
Plug power cord in and turn switch ON. Connect probes to
L and N on control board. Turn meter to AC volts.
230 V
Control,
board
Cord, power
Step 2:
Plug power cord in and turn switch ON. Connect probes to
on/off switch. Turn meter to AC volts.
Black
Black
White
Original instruction
White
Black L
230 V
Control,
board
Step 3:
Check motor thermal switch. Unplug yellow wires. Meter
should read continuity.
NOTE: Motor should be cool during reading.
Yellow Thermistor Wires
to motor
Step 4:
Disconnect potentiometer. Plug power cord in and turn
switch ON.
Control, board
220