Air Dryer
5 Troubleshooting
5-2How to reset the thermal relay and high pressure switch (Only IDFB55E, 75E)
5 - 3
IDX-OM-K021
IDFB Series
＋
＋
＋
＋
5-2 How to reset the thermal relay and high pressure switch (Only IDFB55E, 75E)
If light goes off during operation and refrigerating compressor stops, the thermal relay or high pressure switch
(for only the IDFB55E and IDFB75E) to protect the refrigerating compressor starts operating and needs to be
reset manually. For the position of the thermal relay and high pressure switch, refer to page 1-2.
Before resetting the thermal relay and high pressure switch identify and cure problem that caused the unit to trip
out, by referring to
“5-1 Cause and countermeasure for errors”.
Danger
Be sure to turn off the ON/OFF switch.
How to reset a thermal relay
①
Turn off the ON/OFF switch.
②
Take off the front panel. You can see the electric parts bracket.
The thermal relay can be found left side and upper side in the electric parts bracket.
③
Confirm that a green indication does not appear in the
indication window of thermal relay.
If the green indication appears, there are other possible causes
and contact an SMC Authorized Dealer keeping the power supply on.
④
Press the blue reset button and confirm that the green indication
comes to appear at the indication window.
⑤
Put back the front panel.
⑥
When the ON/OFF switch is turned on, the product will restart
operation.
How to reset a high pressure switch
①
Turn off the ON/OFF switch.
②
Take off the front panel. You can see the electric parts bracket.
The high pressure switch can be found at right side of electric parts bracket.
③
Press the red reset button.
④
Put back the front panel.
⑤
When the ON/OFF switch is turned on, the product will
restart operation.
Thermal relay
High pressure switch
High pressure
switch bracket
Reset button
(Red)
Indication
window
Reset
button (Blue)
Electric parts bracket
Thermal relay
High pressure switch
