USF RO ManualOMRX_6.pdf
USF RO ManualOMRX_6.pdf
USF RO ManualOMRX_6.pdf
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RX Manual 04/04 Rev. 6 SYSTEM INSTALLATION<br />
2.8 ACCESSORY SENSORS (PRETREATMENT INTERLOCK AND TANK LEVEL(S)<br />
Provisions have been made for shutdown by accessory sensors, provided such sensors<br />
are equivalent to a single-pole, single-throw switch. When a shutdown condition exists,<br />
the <strong>RO</strong> system will resume normal operation automatically when the alarm condition has<br />
been corrected or no longer exists. Please refer to the steps that follow for installation<br />
instructions and locations (please refer to the <strong>RO</strong> Controller manual in the Appendix for<br />
further instruction).<br />
A. Open the controller enclosure door to expose the terminal connections.<br />
B. Dry contacts for the PRETREATMENT INTERLOCK should be connected<br />
between terminals 19 and 20 of the terminal strip. The HIGH TANK level switch<br />
input is connected between terminals 17 and 18. The MID TANK level switch<br />
input sensor is connected between terminals 15 and 16.<br />
NOTE: A normally closed switch or switches should be selected. The MC10 Controller<br />
may be used to connect one level switch to the controller (instructions are<br />
included with the MC10 manual located in the Appendix).<br />
C. To connect the accessory, remove the shorting wire where applicable and<br />
connect a single pole single throw normally closed sensor (TANK SWITCHES<br />
and PRETREATMENT INTERLOCK) between the respective terminals. It is<br />
recommended that shielded cable, properly grounded, be used to wire these<br />
sensors to avoid radio signal interference with these functions.<br />
2.9 SETTING THE FLUSH CYCLE TIME AND DURATION<br />
Refer to the MC10 <strong>RO</strong> Controller manual in the Appendix for detailed instructions.<br />
2.10 BEFORE POWER TURN ON<br />
CAUTION<br />
CAUTION<br />
CAUTION<br />
If an isolation valve is located downstream of the <strong>RO</strong> unit in the product,<br />
reject or autoflush piping, a pressure relief device must be installed to<br />
avoid an over pressurization condition that could irreversibly damage the<br />
<strong>RO</strong> unit and related components.<br />
Verify that all retaining “U” pins are in place on the <strong>RO</strong> pressure vessels<br />
before turning on the pump.<br />
Be sure the product water will not enter the user system during startup.<br />
The <strong>RO</strong> system must be operated for 24 hours to flush out the<br />
preservative solution before connecting to the user system.<br />
Once the feed water is plumbed to the system and the electrical power is connected, the<br />
electrician should verify correct motor rotation.<br />
<strong>USF</strong>ilter 2-3