How to resolve prewet solvent dripping from the Downtube in my Horizon Technology Laboratory Equipment?
If prewet solvent drips from the Downtube, the prewet valve might be stuck open. Increase the Solvent Bottle Pressure to 17 psi and run a method that fires only the affected valve. If the issue persists, replace the valve.
Why is the extractor continually draining after the first prewet in my Horizon Technology SPE-DEX 4790 Laboratory Equipment?
If the extractor continually drains after the first prewet, it might be due to an incorrectly set thermistor. Use the Thermistor Height Tool to ensure the recommended height. Also, verify that the higher of the two Thermistors is connected to J6 on the Control Circuit Board. A bad lower Thermistor can also cause this issue, so consider replacing it.
What to do if my Horizon Technology SPE-DEX 4790 sample overflows?
If the sample overflows, check for air leaks by ensuring all cap adapters contain an appropriate, undamaged gasket. Also, verify that the sample bottle being used does not have defects on the threads or the rim. You may also need to replace the Bottle Holder O-Ring or the Cap Adapter.
How to fix prewet solvent that is not drained in Horizon Technology SPE-DEX 4790?
If the prewet solvent is not draining, verify that the vacuum source and Solvent Waste vacuum are set correctly. Also, ensure that the Water-Waste Carboy Manifold is correctly seated and the Water-Waste Carboy Drain is closed. If the Solvent-Waste valve isn't opening, write a short method with only 1 prewet and run it. If no actuation is seen, replace the valve.
What to do if my Horizon Technology SPE-DEX 4790 has low or no elution volume?
If you're experiencing low or no elution volume, consider these factors: * Confirm the method steps and ensure the method has been loaded onto the extractor in use. * If the Check Valve is stuck (rinse solvent was dispensed, but not pulled into the Disk Holder), use the Check Valve Tool to free it. * Ensure the Collection Vessel is properly attached to the Collection Adapter with an upwards-twisting motion for a good seal. * Verify that the vacuum source and the Solvent Waste vacuum are set correctly. * Ensure that the Water-Waste Carboy Manifold is correctly seated and the Water-Waste Carboy Drain is closed.
Why is prewet solvent overflowing in my Horizon Technology SPE-DEX 4790 Laboratory Equipment?
Prewet solvent overflow can occur due to incorrectly set thermistors. Use the Thermistor Height Tool to ensure the recommended height is set. Also, verify the nitrogen source pressure and the Solvent Bottle Pressure are set correctly. A bad thermistor can also be the cause, replace the Top Thermistor.
What to do if my Horizon Technology Laboratory Equipment sample does not dispense?
If your sample isn't dispensing, check the following: * Verify that the nitrogen source and the Extractor Pressure are set correctly. * If the Water Inlet Valve Actuator is stuck closed, increase Extractor Pressure to 50-60 psi and run the Sample Drain Method. * Actuate the Water Inlet Valve manually. * Verify that the MAC valve is firing by disconnecting the nitrogen line on the top port of the Actuator and running the Sample Drain method. Replace the actuator if the line does not pulse nitrogen. * Treat the Water Inlet valve using Hydrophilic Solution.
General| Brand | Horizon Technology |
|---|---|
| Model | SPE-DEX 4790 |
| Category | Laboratory Equipment |
| Language | English |
Advises on ESD mat usage and personal protective equipment like glasses and gloves.
Details pre-inspection testing and system checks before maintenance.
Procedures for performing preventative maintenance on individual modules.
Details system-wide preventative maintenance tasks and tool replacements.
Procedures for inspecting the system after preventative maintenance.
Work instruction to replace the bottle holder on the SPE-DEX 4790 module.
Procedure for replacing the water inlet valve on the SPE-DEX 4790 module.
Steps to replace the downtube assembly on the SPE-DEX 4790 module.
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