Midmark® 1000 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 should be adjusted all the way to the right.

Quick disconnect.

Check water (blue) disconnect.

Depress quick disconnect with a screwdriver and hold for several seconds. Hold rag underneath screwdriver for any water flow. If no water flow, change syringe check valve.

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, repair water relay membrane or replace water relay. Refer to:Water Relay.

Remove water tubing from tri-block 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 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 dual) block is leaking.

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

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.

Check air to tri-block 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 cart requirements.

Loose wire connection.

Check back panel wire connections.

Reconnect wires to back panel 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?

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

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.

Air pressure not set correctly.

Check air pressure.

Check air pressure. Refer to: Air Regulator

Not 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.

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, old 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.