User manual CONTAX PCB-120

[. . . ] These preset voltage settings will work with the majority of the standard solar modules on the market. If you need to change the voltage set point, the "panel voltage adjusting pot" will allow you to do so. (Refer to the controller adjusting procedures. CAUTION: If you change the voltage setting using the adjusting pot, it will change the set points on all 4-selector switches. [. . . ] THIS PROCEDURE IS NOT NECESSARY IF STANDARD 16. 5 TO 17 VOLT SOLAR MODULES ARE BEING USED. This procedure will not work on a centrifugal type pump such as an SCS submersible. It is only for positive displacement type pumps. The purpose of this procedure is to adjust the voltage of the PV array to its peak power point and thus obtain the maximum water delivery from the pump. This procedure should be performed with the panels at their normal operating temperature at mid-day. (Option 1) For Panel voltage adjustment at the maximum power point. With the system installed and pumping water, turn the panels away from the sun until the pump flow rate is reduced by approximately 50%. If this is not possible then shade the panels slightly until you obtain the same results. This puts the controller in a current boosting mode so this adjustment can be made. Connect a DC volt meter to the pump side of the controller. (LD+ and LD-) Turn the small brass adjusting screw on the "Panel Voltage Adjusting Pot", located on the front of the controller, until the highest possible voltage is obtained. (If this controller is used on a Jack Pump system using a flywheel there will be a slight delay from the time you make an adjustment to when a change in voltage will be noticed. ) Return the panels to their normal position. The pump will then operate at its maximum output. 4. (Option 2) For estimated panel voltage adjustment. 1) With the system installed and pumping water, turn the panels away from the sun until the pump flow rate is reduced by approximately 50%. if this is not possible then shade the panels slightly until you obtain the same results. 2) Connect a DC volt meter to the panel side of the controller. (PV+ and PV-) 3) Estimate the proper voltage by multiplying the voltage rating of the panel's times the number of panels connected in series and deduct 20%. Example: 8-60 Watt panels @ 17. 1 Volts ea. = 137 Volts - 20% = 110 Volts 12/06/99 5 4) Turn the small brass adjusting screw on the "Panel Voltage Adjusting Pot", located on the front of the controller, until the estimated voltage is obtained. 5) Return the panels to their normal position. The pump will then operate at its maximum output. TROUBLESHOOTING PUMP DOES NOT RUN If the pump does not run, first make sure the on/off switch is in the up position. Then look at the row of lights to check the status of the system. The red light (indicating power in) and the green light (indicating power out) are the only ones that should be on. [. . . ] Any warranties are limited to the warranty period described above. SOLARJACK'S maximum liability under any warranty, expressed, or implied, or statutory, is limited to the purchase price of the product. The purchaser's exclusive remedy shall be only as stated herein. This warranty is in lieu of all other warranties expressed or implied. [. . . ]