Graymills Super Sonic OMI - Manual (Page 8)

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TROUBLESHOOTING
(Figure 8)
(Figure 9)
TROUBLESHOOTING ERROR SCREENS:
Three conditions cause the machine to display an error
screen like that shown in Figures 8 and 9. The error
screens describe what failed and give suggestions for
correcting the cause of the failure. Pressing the
RESET button clears the error screen.
Failures covered by the self-diagnostics are as follows:
1. LID LIFT FAILED – The lid did not open as
required by a cycle, MANUAL screen
command or RESET command.
2. LIFT PLATFORM FAILED TO RAISE – The
lift platform did not raise to its fully up position
as required by a cycle, MANUAL screen
command or RESET command.
3. LIFT PLATFORM FAILED TO DESCEND
COMPLETELY – The lift platform did not
descend to its fully down position as required
by a cycle or MANUAL screen command.
SELF DIAGNOSIS AND REPAIR:
The machine does not go on when the power
switch is turned to the ON position
• Verify that the branch circuit that supplies
electrical power to the machine is ON.
• Open the electrical control box and verify that
the circuit breaker is turned ON. The window
by the switch on the breaker should show the
color RED if the breaker is ON.
DANGER
230 Volt power connections are exposed
whenever the electrical control box is open.
The skimmer does not operate
• Verify that the skimmer is plugged into the 115
VAC outlet on the back of the machine.
The ultrasonic generators do not operate
• Verify that each of the three generators is
plugged into a 230 VAC single-phase outlet on
the back of the machine. The outlets are on
the right side of the machine as seen from the
front, under the bottom edge of the rear cover.
It does not matter which generator is plugged
into which outlet.
Erratic cycle behavior
• Check position of proximity switch to indicate a
lid up position on the lid cylinder. When lid is
up, the red light at x4 on the PLC inside the
control should be illuminated. Adjust switch
position until light turns on. If light never
illuminates, replace sensor.