Wet packs caused by machine malfunction are generally the easiest to identify and correct.
Operation
- Ensure that the correct cycle was selected
- Verify that cycle parameters have not been changed
- Verify correct load size and load configuration as outlined in “Did You Know”
- Follow the ANSI/AAMI ST79 Standard
Maintenance
- Verify that jacket temperature is controlling at the chamber set point
- Is the floor of the chamber hot? If not, you could have a malfunctioning solenoid valve or jacket trap
- Check the door gasket for wear. Replace if necessary.
- Insure the steam to chamber valve is not leaking
During maintenance, verify that the vacuum system is operational at 25″ -28″ HG
If the Vacuum is not in this range, then check the following:
Ejector Vacuum System
- Verify water pressure is 50 PSI or greater
- Check for foreign material in the ejector
- Inspect the chamber drain check valve
- Inspect the chamber drain control valve
Vacuum Pump System
- Verify proper flow of seal water
- Verify correct rotation of pump
- Inspect the chamber drain check valve
- Inspect the chamber drain control valve
- Verify the seal water temperature is less than 70°F
- Verify proper water flow through the heat exchanger
Generally, these steps will reveal the source of the machine malfunction.
Having problems with wet packs? We are here to help.
