Sterling 882.00249.00 manual General Troubleshooting

Chapter 6: Troubleshooting

6-1	General Troubleshooting
Problem		Possible cause	Solution
		The controller panel is not	Plug in the controller panel.
		plugged in.
		The external disconnect	Close the switch (on).
The controller panel doesn’t light		(recommended) in the dedicated
up at all.		circuit is open (off).
		Fuse/circuit breaker in the power	Replace/reset.
		drop is blown/tripped.
		Broken controller power switch.	Replace.
			Reset the overload and check
		The motor overload has tripped.	the motor for the proper amp
A pump package doesn’t run,			draw on tag.
even though it is on line and its		Main fuse in power drop or
indicator is lit.		optional fused disconnect has	Replace the fuse.
		blown.
		Motor contact is faulty.	Repair or replace as required.
		The bin below it is full if its	Normal operation. When the
			level drops, material conveys to
		amber indicator light is off.
			the hopper.
		The hopper is off line.	Using the controller, place the
			hopper on line.
A vacuum hopper is being
		The convey time for the hopper	Using the controller, enter a
bypassed in the loading cycle.		is set to zero.	reasonable convey time.
		The field-installed station bypass	Normal operation. Set the switch
		switch is simulating a Bin Full	so the hopper is back in the
		condition.	loading sequence.
		The field-installed station bypass	Repair, replace, or rewire.
		switch is bad or mis-wired.
		Conveying times are too long	Time the hopper(s) during
			loading, and set conveying times
		(Time Fill mode only).
			to a few seconds less.
Vacuum hoppers are over-filling.		Maximum conveying times are	Check proximity sensors for
			proper operation and proper
		too long and the PCB does not	wiring to the PCB. Repair as
		recognize the Hopper Full	needed. Reset the conveying
		proximity switch(es).	times to a reasonable value, and
			adjust as needed.

2–Pump 12-Station Controllers Chapter 6: Troubleshooting 46