Procenter / International (Whip) Delivery Units Troubleshooting
None of the handpieces or syringe(s) will function
| Symptom | Probable Cause | Check | Solution |
|---|---|---|---|
| There is no water or air present at any of the handpieces / syringe(s). | Master ON/OFF switch is turned OFF or malfunctioning. | Master ON/OFF switch must be ON. |
Replace Master ON/OFF switch if necessary. Refer to: Procenter Chair Mtd. Units, Procenter Casework Mtd. Units, or Whip Chair Mtd. Units |
| Manual shutoff valve in J-box for AIR is turned OFF. | Manual shutoff valves must be ON. | Contact licensed plumber to replace manual shutoff valve. | |
| Air pilot shutoff valve is malfunctioning. | Disconnect 1/8” purple tubing from air pilot shutoff valve and check for air pressure. |
If there no air pressure: |
Handpieces will not run
| Symptom | Probable Cause | Check | Solution |
|---|---|---|---|
| Handpieces do not run or have water. Syringe works properly. | Throttle valve in foot control is malfunctioning - stuck closed. | Disconnect 1/4” clear tubing from 1/4” grey foot control tubing. Check for air pressure. |
If there is no air pressure: |
| Handpieces do not run or have water. Syringe has water, but no air. | Tubing from air regulator damaged or disconnected. | Check 1/4” grey tubing w/ rib from foot control and 1/8” yellow tubing from umbilical to delivery unit for damage and proper connections. | Replace damaged tubing. Reconnect any disconnected tubing. |
| Air regulator is set too low or malfunctioning. | Air regulator output pressure should be 80 PSI. | ||
| Handpieces have water, but do not run. Syringe works properly. | Damaged or disconnected drive air tubing to delivery unit. | Check 1/4” grey tubing w/o rib from foot control and 1/4” clear tubing to handpiece supply drive air manifold for damage and proper connections. | Replace damaged tubing. Reconnect any disconnected tubing. |
One handpiece
does not run, All other handpieces work properly
| Symptom | Probable Cause | Check | Solution |
|---|---|---|---|
| One handpiece does not run or have water. All other handpieces work properly. | Handpiece holder valve is malfunctioning (stuck open) - keeping the kink valve “kinked”. | Replace suspect valve with known working valve. | Replace handpiece holder valve. |
| Kink valve is malfunctioning. | Watch kink valve when handpiece is removed from holder. It should “unkink”. |
If kink valve remains “kinked” Replace kink valve. |
|
| Damaged or disconnected tubing in delivery unit. | Check 1/8” red tubing, between pilot air manifold and handpiece ON/OFF valve, and 1/8” purple tubing, between handpiece ON/OFF valve and kink valve, for damage and proper connections. | Replace damaged tubing. Reconnect any disconnected tubing. | |
| One handpiece does not run, but has water and coolant air. All other handpieces work properly. | Drive air adjustment valve set too low or malfunctioning. | Check drive air adjustment valve for malfunctioning handpiece. | Adjust drive air valve. Replace valve if necessary. |
| Damaged or disconnected tubing in delivery unit. | Check 1/4” clear tubing, between drive air manifold and drive air adjustment valve, and 1/4” clear tubing, between drive air adjustment valve and kink valve, for damage and proper connections. | Replace damaged tubing. Reconnect any disconnected tubing. |
No water to
handpieces or syringe, Handpieces run properly
| Symptom | Probable Cause | Check | Solution |
|---|---|---|---|
| With water selector valve (City / Bottle toggle switch) in either position, there is no water to handpieces or syringe. | Damaged or disconnected tubing. | Check 1/8” blue tubing, between water selector valve and water supply manifold in delivery head, for damage and proper connections. | Replace damaged tubing. Reconnect any disconnected tubing. |
| Water selector valve malfunctioning | Disconnect “out-going” water line from water selector valve and check for water pressure. |
If there is no water pressure Clean or replace water selector valve. |
|
| Water supply manifold in delivery unit malfunctioning. | Disconnect instrument water supply tubing (1/8” blue) from water supply manifold. Check for water pressure. |
If there is water pressure, clean or replace water selector valve. Refer to: Console Mtd. Units, LR Units, or Casework Mtd. Units |
|
| With water selector valve (City / Bottle toggle switch) in City position, there is no water to handpieces or syringe. Bottle position functions properly. | Water selector valve malfunctioning. | Disconnect incoming City water line from water selector valve and check for water pressure. |
If there is water pressure, clean or replace water selector valve. Refer to: Console Mtd. Units, LR Units, or Casework Mtd. Units |
| Manual shutoff valve in J-box for WATER is turned OFF. | Manual shutoff valves must be ON. | Contact licensed plumber to replace manual shutoff valve. | |
| Water regulator valve in J-box is set too low or malfunctioning. | Water regulator output pressure should be set to 30 PSI. | ||
| Water pilot shutoff valve in J-box is malfunctioning. | Disconnect 1/8” blue tubing from water pilot shutoff valve and check for water pressure. |
If there is no water pressure Replace water pilot shutoff valve. |
|
| Damaged or disconnected tubing. | Check 1/8” blue tubing, between water regulator in J-box and water selector valve, for damage and proper connection. | Replace damaged tubing. Reconnect any disconnected tubing. | |
| With water selector valve (City / Bottle toggle switch) in Bottle position, there is no water to handpieces or syringe. City position functions properly. | Water bottle is empty. | - | Fill water bottle. |
| Water bottle gasket damaged or missing. | Check for air leaking from top of water bottle. | Replace water bottle gasket. | |
| Water bottle air regulator in J-box set too low or malfunctioning. | Water bottle air regulator output pressure should be set to 30 PSI. | ||
| Water bottle air regulator, in console or L/R arm, is malfunctioning. | Water bottle air regulator output pressure should be 30 PSI. | Replace regulator if necessary. | |
| Damaged or disconnected tubing. | Check 1/8” brown tubing, between water bottle air regulator in J-box and water bottle cap, for damage and proper connection. | Replace damaged tubing. Reconnect any disconnected tubing. | |
| Check 1/8” blue tubing, between water bottle cap and water selector valve, for damage and proper connection. | Replace damaged tubing. Reconnect any disconnected tubing. | ||
| Water selector valve malfunctioning. | Disconnect 1/8” blue tubing, from water bottle, from the water selector valve and check for water pressure. |
If there is no water pressure, clean or replace water selector valve. Refer to: Console Mtd. Units, LR Units, or Casework Mtd. Units |
No water to handpiece(s), Syringe works properly
| Symptom | Probable Cause | Check | Solution |
|---|---|---|---|
| All handpieces run and syringe works properly, but there is no water to any of the handpieces. | Toggle switch on foot control is turned OFF. | Check that toggle switch is turned ON. | Turn toggle switch ON. |
| Toggle switch on foot control is malfunctioning. | Check water pressure at output of coolant water toggle valve. | Replace foot control. Valves are not replaceable. | |
| Damaged or disconnected tubing. | Check 1/8” orange tubing from umbilical for damage and proper connection. | Replace damaged tubing. Reconnect any disconnected tubing. | |
| Handpiece runs, but there is no water to that handpiece. Other handpieces work properly. |
Procenter Units: Coolant water adjustment valve is set too low or is malfunctioning. |
Check coolant water adjustment valve for handpieces. |
Adjust coolant water valve. Replace valve if necessary. Refer to: Chair Mtd. Units or Casework Mtd. Units |
|
Whip Units: Coolant water control valve malfunctioning. |
Disconnect 1/8” blue outlet line and check for water during operation. |
Replace coolant water control valve. Refer to: Tubing diagrams. |
|
| Damaged or disconnected tubing. | Check 1/8” blue tubing, between water supply manifold and coolant water adjustment valve and between coolant water adjustment valve and kink valve of handpiece, for damage and proper connection. | Replace damaged tubing. Reconnect any disconnected tubing. | |
| Check 1/8” white tubing between coolant water adjustment valve and between kink valve and check valve | Replace damaged tubing. Reconnect any disconnected tubing. | ||
| Kink valve malfunctioning | - | Replace kink valve if necessary. |
Water leaks
from handpiece when removed from holder
| Symptom | Probable Cause | Check | Solution |
|---|---|---|---|
| When any handpiece is removed from holder, water comes out without pressing foot control pedal. | Coolant water toggle valve is malfunctioning. Bleed port is clogged, allowing pressure to remain in air line. |
Disconnect orange signal line and check for residual air pressure. Residual pressure indicates bleed port is not working. |
Replace foot control. |
| Coolant water flush valve is malfunctioning - stuck open. | - |
Replace coolant water flush valve. Replace valve if necessary. Refer to: Chair Mtd. Units or Casework Mtd. Units |
All
handpieces run, but do not function properly
| Symptom | Probable Cause | Check | Solution |
|---|---|---|---|
| Water sputters when handpiece is used. | Air in lines. | Check for air in coolant lines. | Press coolant water flush valve button and hold for 45 seconds. |
| Water leaking into oil jar. | Handpiece is not sealing at hose connection point, causing water to leak into exhaust hole. | Check for damaged / missing gasket in handpiece. | Replace gasket(s). |
| With water selector valve (City / Bottle toggle switch) in either position, water pressure is too low at all handpieces and syringe(s). | Twisted / damaged tubing. | Check 1/8” blue tubing, between water selector valve and water supply manifold in delivery unit, for damage, kinks, etc. | Replace damaged tubing. Reroute tubing if necessary. |
| Water supply manifold in delivery unit is partially clogged. | Disconnect all tubing from manifold and inspect for proper air flow. | Clean/replace water supply manifold. | |
| With water selector valve (City / Bottle toggle switch) in City position, water pressure is too low at all handpieces and syringe(s). In Bottle position, water pressure is normal. | Water regulator setting is too low. | Water regulator output pressure should be set to 30 PSI. | |
| Twisted / damaged tubing. | Check 1/8” blue tubing, between selector valve and water regulator in J-box, for damage, kinks, etc. | Replace damaged tubing. Reroute tubing if necessary. | |
| With water selector valve (City / Bottle toggle switch) in Bottle position, water pressure is too low at all handpieces and syringe(s). In City position, water pressure is normal. | Water bottle air regulator setting is too low. | Water bottle air regulator output pressure should be set to 30 PSI. | |
| Water bottle air regulator, in console or L/R arm, is malfunctioning. | Water bottle air regulator output pressure should be 30 PSI. | Replace regulator if necessary. | |
| Twisted / damaged tubing. | Check 1/8” brown tubing, between water bottle air regulator in J-box and water selector valve, for damage, kinks, etc. | Replace damaged tubing. Reroute tubing if necessary. | |
| Check 1/8” blue tubing, between water bottle cap and water selector valve, for damage, kinks, etc. | Replace damaged tubing. Reroute tubing if necessary. | ||
| Water bottle gasket leaking. | Check for air leaking from top of water bottle. | Replace water bottle gasket. | |
| While one handpiece is in use, one or more additional handpieces run while in holders. | Handpiece is not stowed properly in holder. | Check kink valve. If it is “unkinked”, make sure handpieces are fully stowed in holders. | - |
| Handpiece ON/OFF valve is out of adjustment. | Check to see if handpiece ON/OFF valve is activated when handpiece is inserted in holder. | Adjust handpiece ON/OFF valve lever so it properly activates when handpiece is stowed in holder. | |
| Handpiece holder valve is malfunctioning - stuck closed. | Check to see if kink valve of unused handpiece is “unkinked” even though handpiece is in holder. | Replace handpiece holder valve. | |
| Check valve of malfunctioning handpiece is defective - stuck open. | Inspect handpiece check valve connected to 1/8” clear tubing for handpiece to see if it is stuck open, or replace check valve with known working valve. | Replace handpiece check valve. | |
| Tube connector malfunctioning | Check for leaks at connection point between handpiece and tube connector. | Replace tube connector. | |
| Kink valve is malfunctioning. | Check to see if kink valve is working properly. | ||
| Handpiece runs momentarily after it is removed from the handpiece holder even though foot pedal is not pressed. | Drive air foot pedal valve is malfunctioning. Bleed port is clogged, allowing pressure to remain in drive air line. |
Disconnect 1/4” clear tubing from 1/4” grey foot control tubing in J-box. Check for residual air pressure. Residual air pressure indicates bleed port is not working. |
Replace foot control. |
| Master ON/OFF switch is turned OFF, but kink valves do not “unkink”. | Drive air foot pedal valve is malfunctioning. Bleed port is clogged allowing pressure to remain in drive air line. |
Disconnect 1/4” clear tubing from 1/4” grey foot control tubing in J-box. Check for residual air pressure. Residual air pressure indicates bleed port is not working. |
Replace foot control. |
| Master ON/OFF valve malfunctioning - stuck open. | Replace suspect master ON/OFF switch valve with known working valve. |
Replace master ON/OFF valve. Refer to: Procenter Chair Mtd. Units, Procenter Casework Mtd. Units, or Whip Chair Mtd. Units |
|
| Coolant air only is not working. | Coolant air adjustment valve on delivery unit adjusted too low or malfunctioning. | Check coolant air adjustment valve. | Adjust / replace coolant air adjustment valve. |
| Damaged or disconnected tubing. | Check 1/8” tubing, between coolant air adjustment valve in delivery unit, and 1/8” green tubing, between coolant air adjustment valve and all handpieces, for damage and proper connection. | Replace damaged tubing. Reconnect tubing if necessary. |
Handpieces work properly, Syringe has no air
| Symptom | Probable Cause | Check | Solution |
|---|---|---|---|
| Syringe has no air. | Syringe air adjustment valve on Procenter units or pinch valve on Whip units adjusted too low or malfunctioning. | Check setting of syringe air adjustment valve. | Adjust / replace syringe air adjustment valve. |
| Damaged or disconnected tubing. | Check 1/8” yellow tubing, between syringe air adjustment valve in delivery unit, and J-box and 1/8” yellow tubing, between syringe air adjustment valve and syringe, for damage and proper connection. | Replace damaged tubing. Reconnect tubing if necessary. |
