Manual Operation
In the event of a component failure resulting in a shut down due to a false alarm, the failed component can be overridden using the Programming Function on the display. High Pressure, Service Prefilter, System Stalled (airlock), and Salinity Probe Failed can be defeated. The other safety shutdown will still be activated. The pressure sensors and salinity probe can also be cali- brated from the display. Complete instructions are found in Part 2 of this manual under “Programming from the Display”. Be absolutely certain that the alarm is in error before defeat- ing the automatic controls.
In the event of complete MPC control failure, the system may be operated manually using the switch on the feed pump module.
•For manual start up, set the switch to “Manual”. Shut the unit down if the Clark Pump does not cycle. In manual operation, the salinity control is inoperative and the diversion valve will not operate. Instead, product water must be taken directly from the membrane product water outlet. The automatic safety controls are disabled in manual mode.
•Bypass the diversion valve as follows:
•Disconnect the 1/4 inch tube “A” that runs between the membrane product outlet and the RotoFlow meter at the membrane outlet fitting. Product water will run out of the fitting.
•Taste the product water before sending it to a tank. Always discard the product water for the first few minutes of operation. The initial product water from the system may not be potable.
•Disconnect the
•To shut down manually, set the switch “Auto” .
•If the system is to be left idle for more than a day it should be given a fresh water flush. To manually flush, collect 3 gallons of product water in a bucket. Connect the service hose to the service connection on the pump module. Place the service valve in “SERVICE” posi- tion and start the feed pump with the manual switch. Run the feed pump until the bucket is empty and turn the service valve back to “RUN”.
Tube “A” 
Tube to tank
Diversion valve manifold outlet
| Tube “A” |
|
| Tube to tank |
|
| Membrane |
|
| product outlet |
|
Manual | Automatic |
|
Operation | 24 | |
Operation |
| |
|
|
