- 3) AUTO SHUTDOWN
Auto Shutdown mode allows the user to enable or disable shutting down the unit after a timed
program has run. When Auto Shutdown is Enabled the unit will automatically entered a timed
Self-Cleaning cycle after a time-entered program has completed. If Auto Shutdown has been
Disabled the unit will automatically go into vent mode and have to be manually turned off after a
time entered program has completed.
Note: The Self-Cleaning cycle is a key component of the Self-Cleaning pump and
cannot be disabled.
Use the Vacuum Control knob to select the Auto Shutdown option to Enable or Disable the Auto
Shutdown feature after a program has been completed. The Auto Shutdown screen will appear
and display the current setting with an asterisk. Use the Vacuum Control knob to select the
desired option and push the Vacuum Control knob to change. The screen will now display the
new setting.
Use the Vacuum Control knob to select Exit or Back to make additional changes from the
Setup screen.
- 4) ABOUT
Use the Vacuum Control knob to select the About option. The About option lists the product
model, version and contact information.
Section 4: MAINTENACE
4.10 General Maintenance
Welch dry vacuum units are 100% oil-free. The pump employs a diaphragm with uninterrupted Teflon® coating.
No maintenance is necessary for the bearings. All bearings are sealed and permanently lubricated. Lubrication
should not be attempted.
Welch’s Recommendation:
To extend the service life of the diaphragm membrane, turn off the Self-Cleaning Dry Vacuum System
when not in use. Running the system when not being used only creates wear on the flexing membrane in
the pump. When running the pump for several hours at a time in an application, Welch recommends air,
vapor or gas pass through the pump rather than run in a blank-off condition. The air, vapor or gas aid in
cooling of the pump mechanism extending the membrane’s service life.
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