AH9000 Mobile Delivery Unit Troubleshooting Chart

Probable Cause

Check

Correction

Empty water bottles.

Water level in bottles.

Fill water bottles.

Toggle not seated to right or left side.

Check toggle location.

Push toggle completely to left or right side.

Water Regulator

Check Water regulator.

Verify bottles are pressurized. Regulator could be faulty.

Tubing Crimped.

Check for crimped tubing.

Replace tubing.

Syringe.

Check Syringe tip and cartridge.

Change syringe tip. Check syringe cartridge for water, repair or replace.

Probable Cause

Check

Correction

Needle Valves closed.

Check needle valves.

Verify needle valves are open.

Handpieces.

Remove handpieces and verify you have water through tubing.

If you have water coming from syringe, remove handpieces and recheck water flow from tubing. If none, repair or replace handpieces.

Kinked Tubing.

Check for kinked tubing from foot control to water relay.

Replace tubing.

Water Relay

Remove air tubing from foot control going to water relay, depress foot control and check for air.

If air is present, replace water relay. Refer to:Water Relay.

Remove water tubing from tri-block or quadblock coming from water relay, depress foot control.

If water is present, repair or replace tri-block. If no water is present, repair or replace water relay. Refer to: Tri-Block, Quadblock or Water Relay.

Probable Cause

Check

Correction

Incorrect holder location.

Check location of handpiece.

Place handpiece in correct holder position.

Membrane (Diaphragm)

If foot control is not depressed while handpieces are hanging in holders, membrane in (tri or quad) block is leaking.

Change membrane (diaphragm) in block. Refer to: Tri-Block or Quadblock.

Probable Cause

Check

Correction

Check valve.

Check the check valve.

Toggle over to one side and fill water bottle. Observe other side for leaking. If it is leaking , replace check valve. Repeat for other side.

Probable Cause

Check

Correction

Handpiece in wrong holder.

Verify handpiece is in correct holder position.

Move handpiece to correct position.

Holder switch out of adjustment.

Check set screw adjustment.

Adjust set screw on holder. Refer to: Handpiece Holder Adjustment.

Tri-block or Quadblock.

Check air to tri-block or quadblock supply.

Pinch tubing off with pliers, handpiece should stop. If not, check pilot valve.

Probable Cause

Check

Correction

Power cord unplugged.

Verify power cord is plugged in cart and outlet.

Plug power cord into cart and/or outlet.

On/Off switch is off.

Check that the on/off switch is turned on.

Turn on/off switch on.

Circuit breaker tripped.

Check to see if circuit breaker needs reset.

Reset circuit breaker.

No power at outlet.

Check for voltage at outlet and/or move to another room.

Reset circuit breaker. Assure outlet is on dedicated circuit capable of handling delivery unit requirements.

Loose wire connection.

Check power compartment wire connections.

Reconnect wires in power compartment if loose. Check voltage on circuit breaker, power cord bracket and on/off switch. Refer to: Line Voltage

Capacitor.

Check Capacitor.

Test capacitor. Replace if needed. Refer to: Capacitor

Pressure Switch Frozen

Check Pressure Switch.

Replace Pressure Switch. Refer to: Pressure Switch.

Motor/Compressor Frozen

Unplug cart. Can you manually move compressor fans? (Remove fan gards to check.)

If you are unable to move compressor fans, replace compressor. Refer to: Compressor

Probable Cause

Check

Correction

Air leaks in system and/or foot control.

Check for air leaks.

Refer to: Checking for Air Leaks

Pressure Switch Frozen

Check Pressure Switch.

Replace Pressure Switch. Refer to: Pressure Switch.

Probable Cause

Check

Correction

Room temperature too high.

Ambient room temperature.

Move to another room. Try running unit.

Check Valve.

See if check valve is sticking.

Spray soapy water on solenoid muffler, if it bubbles while compressor is running, replace check valve. Refer to: Check Valve

Solenoid.

Check Solenoid.

Turn off unit and drain air tank. Turn on unit and see if solenoid bubbles for a few seconds, if not replace solenoid. Refer to: Solenoid

Probable Cause

Check

Correction

Too much back pressure.

See if check valve is sticking.

Spray soapy water on solenoid muffler, if it bubbles while compressor is running, replace check valve. Refer to: Check Valve

Probable Cause

Check

Correction

LED light not installed properly.

Check polarity.

Check polarity ( + and -) connection of LED bulb. Refer to: LED Scaler

Tubing connection bad.

Check tubing connection.

Check continuity between tubing connection and scaler plug. Refer to: LED Scaler

Poor contact with pins.

Clean pins.

Clean pins with alcohol and allow to dry before use.

Tips Power Setting 1 - 3.4 3.5 - 5.5 5.6 - 6 8.1 - 10
Voltage (VDC) 0 - 1.1 1.4 - 2.5 2.8 - 3.9 4.2 - 5

Probable Cause

Check

Correction

Poor power supply connection.

Check power supply.

Verify unit is plugged into wall and not loose. Verify main circuit board has power, that board harness is plugged in on both ends and that the fuse is not blown.

Air pressure not set correctly.

Check air pressure.

Check air pressure. Refer to: Air Regulator

No drive air.

Check drive air adjustment knob.

Verify Drive air adjustment knob is all the way open.

Tubing.

Check tubing continuity.

Check continuity in black and orange wires of the tubing. Refer to: Scaler Tubing

Check HI resistance.

Check HI resistance between the black and orange tubing wires. Refer to: Scaler Tubing

Tip not tight enough.

Check tip.

Verify tip is tightened. Tip must be tightened for scaler operation to work.

Tip is worn.

Check tip.

Tip must be within tolerance as per tip chart for scaler operation to work. Change tip.

Potentiometer Harness bad or misadjusted.

Check for proper setting. Service tip: if setting is correct move on to Ω check.

If you have 24 VAC or 31 V DC, Check potentiometer for proper resistance sweep of 4 to 4.7K Ω when turned from Min to Max on Ohmmeter measuring between the white and brown/blue wires on Molex.

If resistance is not ok, replace potentiometer harness. If resistance is ok, check all wiring and pins for continuity. Repair any wiring that does not pass continuity check.

If you do not have 24 VAC or 31 VDC, Check power supply and air/electric switch for failure.

Replace potentiometer harness if power supply or air-electric switch has failed.

Potentiometer Harness disconnected. Check that it is plugged into main circuit board. Push connectors into socket and check function.

Tubing is damaged.

Check tubing.

Check continuity in black and orange wires of the tubing. Refer to: Scaler Tubing

Handpiece is damaged.

Swap out handpieces.

If scaler operates properly with different handpiece, original one is damaged.

Transducer in scaler.

Check transducer in scaler.

Replace with a known working handpiece. If the replacement handpiece works, then the transducer is bad in the problem handpiece. Return handpiece to Acteon for service or replace with new handpiece.

Probable Cause

Check

Correction

Unit is unplugged.

Power Cord connection to unit and power outlet. Connect power cord to unit and wall outlet.
Display Harness is Unplugged.

Display harness is connected to main PCB and Display PCB.

Connect display harness to main PCB and display PCB. Refer to: Water Level System

Display PCB is damaged.

Unit is plugged in, display harness is connected to main PCB and Display PCB.

Replace display PCB. Refer to: Water Level System

Main PCB is damaged.

Unit is plugged in, display harness is connected to main PCB and Display PCB, Display PCB integrity.

Replace display PCB. Refer to: Water Level System

Probable Cause

Check

Correction

Water sensor bent

Water sensor is straight and runs from top of bottle to bottom.

Straight out water sensor. Refer to: Water Level System

Water sensor damage

Water sensor integrity.

Replace sensor.

Water sensor disconnected.

Water sensor connection to harness, harness connection to PCB.

Re-connect sensor and/or harnesses. Refer to: Water Level System

Water sensor PCB-to-sensor harness damaged.

Water sensor PCB-to-Sensor Harness integrity.

Replace water sensor PCB-to-Sensor Harness. Refer to: Water Level System

Probable Cause

Check

Correction

Water bottle(s) empty.

Water level in bottle(s).

Fill water bottle(s).

PCB lock-up.

Other PCB functionality (scaler enable or dimmer button).

Unplug unit for 30 seconds, plug unit back in.

Probable Cause

Check

Correction

Water bottle(s) empty.

Water level in bottle(s).

Fill water bottle(s)..

Water sensor disconnected.

Water sensor connection to harness, harness connection to PCB.

Re-connect sensor and/or harnesses. Refer to: Water Level System

PCB lock-up.

Other PCB functionality (scaler enable or dimmer button).

Unplug unit for 30 seconds, plug unit back in.