Sun Pumps MTR BLM-SB-073S-60 User Manual
Page 11
1. Switch the controller to the OFF position.
2. Connect ground rod conductor to the controller chassis ground block (See Figure 2).
3. Connect solar module frame ground conductor and the pump ground conductor to
controller chassis ground block (See Figure 2).
4. Connect pump motor leads to the lower terminal block. Red leg to “R”, yellow leg to
“Y” and black leg to “B” (See Figure 2).
5. Connect the DC source supply negative (-), black conductor to the controller terminal
labeled “PV-“. (NOTE: If a fused disconnect is used, the power should be connected to
it first and then to the controller see Figure 2).
6. Connect the DC source supply positive (+), red conductor to the controller terminal
labeled “PV+“. (NOTE: If a fused disconnect is used, the power should be connected to
it first and then to the controller see Figure 2).
7. Connect the remote switch and the low water cutoff sensor to the upper terminal block
(See Figure 3). Refer to the next section for “Remote Switch” and “Sensor Low Water
Cutoff” connections and configuration (if applicable) and then return to this point.
8. At this point, all system components are installed and wired, double check conductor
polarities, wire termination tightness and controller configuration. If you have a volt
meter check the open circuit voltage and the module polarity before connecting power to
the controller.
9. Switch the disconnect on. If the polarity is correct the red light will be on.
10. Turn the “ON/OFF” switch to the ON position. The system should be operational. If
the system is not working refer to the “Troubleshooting” section.