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10
Power-down sequence.
1. Press Power button to start power-down sequence.
2. The MAX VAC LED and third RAMP LED will go off and the blower will begin a ramp down
to a fi xed RPM matching the pumping speed of the diaphragm pumps. The POWER ON and
second RAMP LED’s will fl ash in unison indicating the shutdown mode is in progress.
3. Ten seconds after the start of power-down sequence the VENT valve will open to purge the
pump.
4. When the blower has fi nished its ramp down the second RAMP LED will go out and now the
last RAMP LED will fl ash in unison with POWER ON LED. The total time from this point to the
unit fully powering down will be 95 seconds.
5. After ten seconds the Vent valve will open.
6. Fifteen seconds before the unit powers down the blower is shut off along with the last RAMP
LED.
Power-down sequence continue.
7. Ten seconds later the diaphragm pumps are turned off
8. Five seconds later the VENT valve is closed and unit power is off .
3.17 Fault Modes. Call factory in case of fault condition. Phone 847-676-8800