Accu EQ Series - User Manual

Questions and Answers

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Brian KnightAug 22, 2025
What to do if Accu Chiller pump will not start?
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  Colleen SteeleAug 22, 2025
  If your Accu Chiller pump isn't starting, the issue could be due to a pump overload. Check the supply voltage, wiring, and the overload set point (if there's an external overload). Another potential cause is a faulty pump contactor, which would need replacement. Similarly, a malfunctioning microprocessor control board could be the culprit and would also require replacement. Lastly, the pump motor itself might have failed; check the motor windings and replace the motor if it's faulty.
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Christopher WhiteAug 26, 2025
Why is the refrigerant pressure low in my Accu Chiller?
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  Charles HarveyAug 26, 2025
  Low refrigerant pressure in your Accu Chiller may be caused by a low refrigerant charge or a refrigerant leak, in which case you should contact a refrigeration service technician. It could also be due to a faulty low refrigeration pressure sensor, so check for proper range and replace if necessary. In some instances, a malfunctioning microprocessor control board might be the cause, requiring replacement.
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Anthony OlsonAug 28, 2025
How to fix erratic temperature control on Accu Chiller?
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  barbaraharringtonAug 29, 2025
  If you're experiencing erratic temperature control with your Accu Chiller, it could be due to several reasons. One possibility is low coolant flow through the evaporator, which can be resolved by adjusting the flow to the proper level. Another cause might be intermittent overloading of the chiller's capacity; ensure that the chiller is appropriately sized for the process load. A faulty hot gas bypass valve could also be the issue, requiring assistance from a refrigeration service technician. Additionally, the microprocessor control board or the thermocouple could be malfunctioning, and replacing them might solve the problem.
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Spencer RuizSep 1, 2025
What causes freezestat activation in Accu Chiller?
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  rhonda17Sep 1, 2025
  A freezestat issue in your Accu Chiller can arise from several causes. It could be due to low flow through the evaporator, which can be resolved by adjusting the flow to the proper level. Another potential cause is a problem with the freezestat control module; check for the proper setting and replace it if faulty. Additionally, the microprocessor control board or the freezestat sensor itself could be malfunctioning, requiring replacement.
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Patrick GordonSep 4, 2025
Why is my Accu Chiller not cooling enough?
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  Tony LynchSep 4, 2025
  If your Accu Chiller has insufficient cooling, and the temperature continues to rise above the set point, several factors could be responsible. The process load might be too high, so verify that the chiller is properly sized for the load. The coolant flow through the evaporator could also be too high or too low, requiring adjustment to the correct level. Insufficient condenser cooling, a hot gas bypass valve stuck open, or a refrigeration circuit problem could also be the cause, in such cases it is recommended to contact a refrigeration service technician. In some cases, the microprocessor control board or the thermocouple could be faulty, requiring replacement.
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larrybrownSep 7, 2025
What causes high pump discharge pressure in Accu Chiller?
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  Karen ClarkSep 7, 2025
  High pump discharge pressure in your Accu Chiller can be attributed to a few reasons. Closed valves in the process piping could be the cause, simply open them. An obstruction in the piping or process could also lead to this issue, so remove any obstructions. A clogged Y-strainer is another possibility, requiring you to clean the strainer. Lastly, a faulty pressure gauge could be giving incorrect readings, so consider replacing it.
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Sarah PattonSep 12, 2025
Why is the pump discharge pressure low on my Accu Chiller?
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  Lauren WelchSep 12, 2025
  Low pump discharge pressure in your Accu Chiller can occur for a few reasons. If you're using three-phase pumps, the pump might be running backwards; switch two legs of the incoming power to correct this. A faulty pump pressure gauge could also be the cause, so replace it if necessary. Additionally, the pump itself might have failed and need replacement. Finally, excessive flow can lead to low discharge pressure, so reduce the flow.
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Kathleen HamiltonNov 14, 2025
How to troubleshoot Accu Chiller compressor that will not start?
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  Randy NguyenNov 14, 2025
  If your Accu Chiller's compressor isn't starting, several factors could be at play. It might be due to a compressor overload, in which case you should check the supply voltage, start components (if it's a single-phase unit), and wiring. For single-phase units, the run capacitor or start capacitor could be faulty, requiring a capacitance measurement and replacement if needed. Another potential issue is the start relay; check for continuity between points 2, 5, 1, and 2, and replace it if there's no continuity. Also, inspect the compressor contactor and replace it if it's defective. In some cases, the problem could stem from the microprocessor control board, which would also need replacement if faulty. If none of these steps resolve the issue, it might indicate a compressor failure, and you ...
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johnny97Nov 17, 2025
Why does my Accu Chiller have high refrigerant pressure?
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  Robert RochaNov 18, 2025
  High refrigerant pressure in your Accu Chiller can stem from several causes. For air-cooled units, check for dirty air filters and clean them. Ensure there's no airflow obstruction around the unit, adhering to the manual's installation recommendations. High ambient air temperature exceeding 105°F (40.5°C) can also cause this issue, so reduce the ambient temperature. Inspect the condenser fan motor for failure in its start components and motor windings, replacing if faulty. Confirm proper operation of the condenser fan cycling control, replacing if needed. For water-cooled units, a plugged condenser requires cleaning of the tubes. Insufficient condenser water flow also needs to be addressed by ensuring the chiller is installed per the manual's recommendations. High condenser water temperatu...