Why does my Hach Measuring Instruments show a red LED and measure hard water?
If the red LED is continuously on and the Hach Measuring Instruments measures hard water, make sure to set the flow rate to 200 mL/minute. The issue could be caused by a flow that is too low, preventing the sample cell from completely flushing out the color, or a flow that is too high, causing the water to bypass the pinch block and dilute the color.
What to do if display lights and the pump motor does not operate on Hach Monitor?
If the display lights up but the pump motor doesn't operate on your Hach Monitor, here are a few things to check: 1. Low operating power: Verify the line voltage is within specifications. 2. Incorrect line voltage selector switch setting: Check the line voltage selector switch position. 3. Motor cable not connected: Check the motor cable connection to the circuit board. 4. Defective motor: Replace the motor.
How to troubleshoot a Hach Monitor when the display doesn't light and the pump motor isn't operating?
If the display does not light and the pump motor is not operating on your Hach Monitor, check the power switch position, fuse, and power cord connections to ensure they are properly connected.
What to do if display doesn't light but the pump motor operates on Hach Monitor?
If the display doesn't light, but the pump motor operates on the Hach Monitor, the problem may be with the power supply. Replace the circuit board.
What to do if Hach Measuring Instruments doesn't dispense reagent and shows hard water?
If the red LED is on continuously and the Hach Measuring Instruments measures hard water, remove the two reagent lines from the Y connector. Only one drop of reagent should come out per cycle. If no reagent comes out, examine the pressure plate to ensure the pinch block is not overtightened and the reagent lines are not pinched. Also, check the back of the pinch block for grooves. Replace the pinch block if necessary.
What to do if the chemistry doesn't operate correctly in Hach Measuring Instruments?
If the red LED is continuously on and the Hach Measuring Instruments measures hard water, mix 1-mL of each reagent with 80-mL of sample. A color change must be visible. If no color change occurs, replace the reagents. The issue may be that the chemistry does not operate correctly.
Why is the SOFT LED flashing continuously on Hach SP-510?
If the SOFT LED is flashing continuously for more than 5 minutes after powering on your Hach Measuring Instruments, let the instrument complete the cycle. Ensure the motor is operating. Power off and then on, waiting 5 minutes. If the issue persists, contact technical support, as it could indicate a blockage in the optical path or a faulty optical switch.
Why is the reading continually high on Hach SP-510 Measuring Instruments?
If the reading is continually high and the HARD LED is on for your Hach Measuring Instruments, refer to Troubleshooting for a hard reading on page 22. If the problem continues, cycle power, examine all power connections and fuses, replace the circuit board, or contact technical support.
How to fix a pinched sample line in the pinch block of Hach SP-510?
If the sample line is pinched off in the pinch block of your Hach Measuring Instruments, follow these steps: * Pull the sample line from the colorimeter, being aware that water in the line may leak out. Examine and adjust the flow rate to 200 mL/minute while the line is pinched, ensuring a steady water stream. * Make sure the pressure plate of the pinch block isn't overtightened. * Inspect the back of the pinch blocks for grooves.
How to set the flow rate for accurate readings on Hach Measuring Instruments?
To ensure the sample cell in your Hach Measuring Instruments flushes completely, set the flow rate to 200 mL/minute. This prevents a zero reading caused by insufficient flushing or dilution from bypassing the pinch block.
Details about the physical and operational characteristics of the instrument.
Instructions for mounting the instrument on an indoor wall away from direct sunlight.
Guidelines for making electrical connections using conduit, emphasizing safety and enclosure rating.
Detailed steps for performing a two-point calibration of the instrument.
Recommended schedule for routine maintenance tasks for the SP-510 instrument.
Procedure for replacing fuses, emphasizing using correct type and rating.
Steps to diagnose and resolve issues when the instrument consistently measures high hardness.
General| Parameter | pH, ORP, Conductivity, TDS, Salinity, Temperature |
|---|---|
| pH Resolution | 0.01 pH |
| Battery Life | Approximately 200 hours |
| Display | LCD with backlight |
| IP Rating | IP67 |
| pH Range | 0 to 14 pH |
| Temperature Range | -5 to 105°C |
| Temperature Resolution | 0.1 °C |
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