7
Claw Medical Vacuum Systems
Troubleshooting Guide
ProBlem
CaUSe
CorreCTiVe aCTion
Lag Alarm
Overload Tripped
1. Reset overload; if problem continues, check motor amp draw
2. Verify overload is set to the correct service factor
3. Verify wire gauge is correct for amp draw
PLC Failure
1. Check PLC for red error light; replace PLC
2. Check PLC for flashing green light; if 24V DC is present on the last
input, then reprogram PLC with E-Prom chip
Pump / Motor Failure
1. Check drive coupling; replace if needed
2. Verify that pump shaft turns freely; repair or replace as necessary
3. Check vacuum discharge piping to verify air is being exhausted; repair
or replace as necessary
4. Verify voltage to the motor; repair wiring or replace motor as
necessary
Vacuum Consumption
1. Repair leaks
2. Inspect purge valves are closing; repair or replace as necessary
3. If scroll pump is running backwards, replace check valve
Switch Failure
Check continuity on lead vacuum switch
High Temperature Alarm
High Temperature
Verify ambient temperature is below 104 ° F
Lost Connection
Inspect high temperature probe and connections; replace if necessary
notes
