What is the function of the emergency stop switch next to the control panel of the screw compressor? As the name suggests, the emergency stop switch is mainly used to deal with some emergency events.
Key Takeaways
- Under what circumstances can an emergency stop be made?
- How to stop emergency?
- Emergency Power-down Record Check
When the compressor is in a dangerous state, or a sudden breakdown occurs during the production process, to avoid greater damage, it must be power down in time for inspection. We can cut off the power supply and stop the operation of the equipment by pressing the emergency stop switch to safeguard people and equipment safety.
Table of Contents
- Under what circumstances can an emergency stop be made?
- How to stop emergency?
- Emergency Power-down Record Check
- How to reset the compressor after emergency stop?
Under what circumstances can an emergency stop be made?
If the following situations occur, the compressor should press the emergency power-down button for emergency power-down, find out the cause, and then start the machine after fault diagnosis.
- The current and discharge pressure gauge suddenly exceed the specified value;
- The cooling water of the water-cooled compressor suddenly stops, and the supply of cooling is interrupted;
- When the water temperature and oil temperature of a certain part of the compressor exceed the allowable value, when the automatic control system fails, it should be power down urgently;
- The compressor makes abnormal sounds, such as metal collision sound and loose connections, cylinders, cylinder heads, screws and other parts are damaged;
- When the lubricant pressure drops, or the supply suddenly stops;
- There are serious leaks and leaks in the compressor gas delivery process;
- When the motor vibrates strongly or has a burning smell;
- When the weather is suddenly abnormal, the compressor station is flooded, or there is an emergency around.
How to stop emergency?
In case of emergency stop, users can directly press the “emergency stop” button without unloading first.
After shutting down, the residual air in the system should be discharged after the compressor is finished, and the pressure should be returned to zero: after a period of power-down, the condensed water in the oil and gas barrel, oil cooler, and aftercooler should be discharged. If it is cold in winter, it should be avoided Frost crack damage and rust in low temperature environment.
Emergency Power-down Record Check
After an emergency power-down, it is recommended that you record the reason for the power-down in writing for upkeep and inspection. The records include:
- Production downtime, production downtime type;
- Preliminary assessment of emergency power-down losses;
- Preliminary judgment of emergency power-down accident:
- Matters that require the assistance of relevant departments for rescue and emergency rescue;
- Restoration or emergency repair time;
How to reset the compressor after emergency stop?
- The emergency stop switch is pressed. Turn the emergency stop switch clockwise to see if it pops out. If not, replace the emergency stop switch.
- After the compressor has been idle for a long time, please reset it when it is turned on, but the reset does not work. In this case, it can be preliminarily judged that the emergency stop switch is disconnected or the emergency stop control circuit is in poor contact, and the emergency stop switch should be replaced or repaired.
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Frequently Asked Questions
What should I check first when a compressor will not start?
Confirm power supply, control settings, and emergency stop status, then check the pressure switch and any start protection devices.
Why does my compressor run hot?
Common causes are restricted airflow, low oil level, a blocked cooler, or high ambient temperature. Clean the cooler and verify lubrication first.
What does excessive oil consumption mean?
It usually indicates worn separator elements, overfilling, or a leak in the oil circuit. Inspect the separator and seals.
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