mycom i160M - User Manual

Questions and Answers

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William DavisAug 15, 2025
What to do if my mycom Air Compressor stops immediately after startup?
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  Shawn AndersonAug 15, 2025
  If your mycom Air Compressor stops immediately after starting, it could be due to the activation of the low pressure protection circuit. To resolve this, check for refrigerant leaks, stop any leaks found, and then add refrigerant. Also, be aware of potential moisture entering the system. Alternatively, the issue might stem from a malfunctioning low pressure protection switch, pressure sensor, or relay. Identify any defective devices, investigate the cause of the failure, take necessary actions, and replace the failed device.
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Michael MendozaAug 21, 2025
How to troubleshoot a mycom Compressor that does not start up?
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  Christy WoodsAug 21, 2025
  If your mycom Compressor isn't starting, several factors could be at play. First, ensure the power source is active; use a checklist to confirm post-inspection actions. A main motor failure could also be the cause, so consult the motor's instruction manual for detailed troubleshooting. Check that the cooling water is circulating correctly, and if not, identify and replace any defective devices. A clogged circulation route can also prevent startup, so clear any blockages. Additionally, a faulty magnet, relay, or other component in the startup circuit may be the culprit, requiring replacement. Finally, a poor installation environment can hinder performance; improve temperature, humidity, and ventilation, and replace any defective ventilation fans.
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Jennifer WangAug 25, 2025
What to do if my mycom Compressor stops immediately after starting?
- R
  Robert MurilloAug 25, 2025
  If the mycom Compressor stops immediately after starting, it could be due to the low pressure protection circuit activating. To fix this, check for refrigerant leaks, stop any leaks, and then add more refrigerant. Also, be mindful of moisture entering the system. Alternatively, the issue might stem from a failure in the low pressure protection switch, pressure sensor, or relay. In this case, identify the defective device, investigate the cause of failure, take necessary actions, and then replace the failed device.
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Maria RitterAug 30, 2025
Why does my mycom Compressor generate abnormal vibration and/or sound?
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  Jennifer LarsonAug 30, 2025
  If your mycom Compressor is generating abnormal vibration or sound, one potential cause is excessive vibration of the motor shaft. If other causes are ruled out, consider overhauling the compressor at a facility equipped for dynamic balance measurement and adjustment. Another cause could be liquid flow-back during startup, which often presents with a loud, abnormal noise; identify and address the root cause, then overhaul and inspect the compressor. Liquid flow-back during operation, indicated by notable frosting on the suction side, can also cause these issues. To prevent this, avoid rapid changes in heat load that exceed the set value of the heat exchanger and expansion valve.
J
James PalmerSep 2, 2025
What to do if there is a leak from the mechanical seal of my mycom Compressor?
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  cmurphySep 2, 2025
  If you notice a leak from the mechanical seal of your mycom Compressor, it could be due to an initial leak after replacement, which should decrease gradually as the sliding faces settle. Ensure the leak doesn't increase continuously. The duration of this initial leak is approximately 200 hours. Alternatively, the sliding surface may be roughened due to overheating. In this case, review the operating conditions to reduce the frequency of starting and stopping the equipment. Finally, deteriorated parts can also cause leaks; replace them as needed, referring to causes and actions for "Overheating of sliding surface."
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emilyhigginsSep 8, 2025
What causes capacity control malfunction in my mycom Compressor?
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  vadkinsSep 8, 2025
  If the capacity control is malfunctioning on your mycom Compressor, it could be due to a failure of the capacity control solenoid valve or related relays. If these parts are deteriorated, replace them. If water leakage is the cause, remove the source of the leak and replace any defective parts. Internal leakage of the capacity control solenoid valve can also cause issues, requiring replacement of the valve. Lastly, a defective capacity control oil supply line can lead to malfunction; remove the cause of the defect, and check the oil for contamination, replacing it if necessary.
K
Kelly SmithSep 12, 2025
What causes damaged thrust bearings in my mycom Compressor?
- M
  martinezlauraSep 12, 2025
  If your mycom Compressor has damaged thrust bearings, one potential cause is excessive thrust stress due to high suction pressure exceeding the level set by operating conditions. Re-examine the operating conditions and improve them if possible. If improvement is difficult, review the maintenance interval management. Another cause could be faulty assembly, such as lock nuts tightened insufficiently, lock washer tab not bended, rotation stopper not set to thrust bearing gland, or spring washer not assembled. Tighten lock nuts to the specified torque or torque angle and record data on the assembly check sheet to prevent omission of work steps.
Z
zsullivanNov 17, 2025
Why my mycom Air Compressor does not start up?
- N
  Nicole BarnesNov 17, 2025
  If your mycom Air Compressor doesn't start, it could be due to several reasons. First, ensure the power source is on, using a check sheet for post-inspection actions. It could also be due to main motor failure, in which case you should refer to the motor's instruction manual. Another potential cause is the cooling water circulation not being confirmed, which requires identifying defective devices, investigating the causes of failure, taking necessary actions, and replacing any failed devices. A clogged circulation route can also prevent startup; if this is the case, remove the clogging. Also, check for failure of the magnet, relay, etc. in the compressor startup circuit. Defective devices should be identified and replaced with a new one. Lastly, a poor installation environment can cause st...
S
Shannon SmithNov 26, 2025
Why is the pressure abnormally high in my mycom Compressor?
- W
  williamsjohnNov 26, 2025
  If you're experiencing abnormally high pressure (abnormal discharge pressure) in your mycom Compressor, several factors could be the cause. A heat exchange failure in the condenser might be the reason; try cleaning and washing it, using chemical cleaning if heavily contaminated. A failure in the fan motor, thermo switch, water spraying pipes, or cooling water pumps could also be responsible; identify and replace any defective devices. Check for faulty adjustment of cooling water or brine flow, readjusting the valve if it's manually controlled, or investigating the cause if it's an automatic valve. Other issues could include insufficient cooling water flow, so inspect filters for clogging, check for leaks, and examine water supply routes. If the heat exchanger performance is deficient, re-e...

Summary

Warranty and Disclaimer

Warranty Clauses

Disclaimer of Warranty

Important Information

Important Information for Safe Use of this Product

Highlights critical safety measures and precautions for operating the product.

Chapter 1 Safety

1.1 Strict Requirements and Prohibitions

Details essential rules and prohibitions for safe operation and maintenance.

1.3 Residual Risks

Identifies potential hazards and outlines countermeasures for safe operation.

1.4 Safety Devices

1.4.1 Emergency Stop Button

1.4.2 Circuit Breakers of Motor Main Power and Control Power (with Lockout;Tagout Mechanism)

Explains the use of circuit breakers with lockout/tagout for safety.

1.4.3 Compressor Protective Devices

Describes various protective devices for compressor safety and their settings.

Chapter 2 Compressor Specifications and Configuration

2.3 Compressor Specifications

Presents detailed technical specifications for the i-Series compressors.

2.3.1 Standard Specifications

Lists the standard technical data and parameters for the i-Series compressors.

2.3.2 Operation Limits

Defines the permissible operating ranges for speed, pressure, and temperature.

2.3.3 Alarm Set Values

Specifies alarm and stop set values for compressor protection.

2.4 Configuration of Compressor

2.4.3 Parts Configuration Table

2.5 Mechanisms

2.5.6 Capacity Control Mechanism

Chapter 3 Installation

3.1 General Precautions for Installation

Provides essential safety and procedural guidelines before starting installation.

3.2 Installation Works

Details the step-by-step procedures for installing the compressor package unit.

3.2.3 Transportation

Procedures and safety precautions for safely transporting the compressor.

3.2.5 Installation

3.2.5.1 Piping Connection

3.2.7 Lubricating Oil Charge

3.2.7.1 Initial Charge of Lubricating oil

3.2.8 Charge of Refrigerant

Chapter 4 Compressor and Package Unit Operation

4.1 Lubricating Oil (Refrigerant Oil)

Details on lubricating oil properties, selection, and management.

4.1.1 Precautions for Selecting the Lubricating Oil

Guidelines for choosing the correct lubricating oil based on system requirements.

4.1.2 Recommended Lubricating Oils

Lists specific oil brands and types recommended for different refrigerants.

4.1.5 Lubricating Oil Management Criteria

4.1.6 Lubricating Oil Replacement Timing

4.2 Precautions for Operation

Important considerations for safe and efficient compressor operation.

4.2.1 Prevention of Liquid Flow-back

How to prevent liquid refrigerant from returning to the compressor.

4.2.2 Purging of Non-Condensable Gases

4.3 When Stopping the Compressor for a Long Time

Chapter 5 Maintenance and Inspection

5.1 Precautions for Maintenance and Inspection

General safety and procedural guidelines before performing maintenance.

5.2 Maintenance and Inspection List

Lists items and intervals for regular maintenance and inspection tasks.

5.2.1 Daily Management

5.2.2 Periodic Inspection

Scheduled inspection tasks to be performed at regular intervals.

5.2.3 Guidelines for Compressor Overhaul Interval

5.3 Compressor Disassembly Preparation

Prepares for compressor disassembly, covering tools and parts.

5.3.2 Replacement Parts

Lists standard replacement parts for overhauled i-series compressors.

5.3.3 Refrigerant Gas Treatment

Procedures for handling refrigerant gas during disassembly.

5.3.3.2 Refrigerant Gas Recovery

Methods for recovering refrigerant gas safely before disassembly.

5.3.4 Removing Parts Connected to the Unit

5.3.5 Removing and Lifting the Compressor

Guidance on safely removing and lifting the compressor unit.

5.4 Disassembly and Inspection

Detailed steps for disassembling compressor parts and inspecting them.

5.4.1 Shaft Seal Block

Procedure for disassembling and inspecting the shaft seal assembly.

5.4.1.1 Disassembly

5.4.1.2 Inspection

5.4.2 Bearing Cover

5.4.3 Balance Piston

5.4.3.2 Inspection

5.4.5 Thrust Bearing Block

Disassembly and inspection of the thrust bearing assembly.

5.4.5.1 Disassembly

5.4.5.2 Inspection

5.4.6 Bearing Head

5.4.7 Rotors

Disassembly and inspection of the compressor rotors, critical components.

5.4.7.1 Disassembly

5.4.7.2 Inspection

Checks for rotor wear and damage, with replacement standards.

5.4.8 Radial Bearings

5.4.9 Suction Strainer and Check Valve

Disassembly and inspection of the suction strainer and check valve.

5.4.9.1 a Disassembly (i125*)

5.4.9.1 b Disassembly (i160*)

5.4.9.2 Inspection

5.4.10 Unloader

5.4.10.2 Inspection

5.5 Reassembly

General procedures and precautions for reassembling the compressor.

5.5.2 Rotor and Inner Race of Radial Bearing

Procedure for installing radial bearing inner races onto rotors and assembling rotors.

5.5.3 Bearing Head

5.5.5 Suction Strainer and Check Valve

Reassembly of the suction strainer and check valve components.

5.5.5.1 i 125*

5.5.5.2 i 160*

5.5.6 Adjustment of Thrust Bearing and End Clearance

Procedure for adjusting the thrust bearing and end clearance.

5.5.6.1 End Clearance Measurement

5.5.6.2 End Clearance Adjustment

Methods for adjusting end clearance if it falls outside specifications.

5.5.6.3 Tightening after End Clearance Adjustment

5.5.9 Shaft Seal Block

Detailed procedure for reassembling the shaft seal block.

Chapter 6 Troubleshooting

01: Compressor does not start up

Troubleshooting steps for when the compressor fails to start.

02: Compressor stops immediately after startup

Diagnosing why the compressor stops shortly after startup.

03: Abnormally low pressure (decrease of suction pressure)

Identifying causes and solutions for low suction pressure.

04: Low oil pressure (low oil supply pressure)

Troubleshooting low oil supply pressure issues.

05: Abnormally high pressure (abnormal discharge pressure)

Addressing abnormally high discharge pressure problems.

06: Discharge temperature is abnormally high

Resolving issues with abnormally high discharge temperatures.

07: Leak from mechanical seal part

Diagnosing and fixing leaks from the mechanical seal.

09: Capacity control malfunction

10: Compressor generates abnormal vibration and;or sound

Appendix 2: Basic Points of Design and Manufacturing for the Compressors Multi- package

mycom i160M Specifications

General

Brand	mycom
Model	i160M
Category	Air Compressor
Language	English

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