mycom SCV Series - User Manual

mycom SCV Series

161 pages

To Next Page

To Next Page

Loading...

2205Q2JE-HO-S6-N_2020.01.

SCV-series

Screw Compressor

Instruction Manual

160VLD／160VMD／160VSD

200VLD／200VMD／200VSD

250VLLD／250VLD／250VMD／250VSD

320VLD／320VMD／320VSD

160VLG／160VMG／160VSG

200VLG／200VMG／200VSG

250VLLG／250VLG／250VLG／250VSG

CAUTION

Read this manual carefully and thoroughly before operating, maintaining or inspecting this

product. It is important to fully comprehend the contents of this manual. Keep the operation

manual in a safe, designated place for future reference whenever the need arises.

Specifications of this product are subject to change without prior notice.

Table of Contents

Questions and Answers:

E
espinozamaxwellAug 6, 2025
What to do if my mycom SCV Air Compressor has abnormal high pressure?
- O
  Olivia JacksonAug 7, 2025
  If your Mycom Air Compressor is experiencing abnormally high pressure, it could be due to a few reasons. Check for heat exchange failure at the condenser (heat exchanger) and clean it, using a solvent if needed. Also, look for malfunctions in the fan motor, thermo-switch, water spray bars, or cooling water pumps, addressing any issues and replacing faulty components. If the heat exchanger capacity is insufficient, consider re-evaluating operating conditions or improving the installation environment. If these adjustments are difficult, adding more or larger heat exchangers might be necessary.
S
Sean AllenAug 11, 2025
What to do if my mycom SCV stops immediately after startup?
- A
  austin22Aug 11, 2025
  If your Mycom Air Compressor stops immediately after starting, it could be due to the low pressure protection circuit being activated. Check for insufficient refrigerant, identify and repair any leaks, and then recharge the refrigerant, being cautious of moisture contamination. Another possible cause is a malfunction in the pressure regulating valve operation, in which case you should replace the valve or address the underlying cause. It could also be due to a malfunction of the low pressure protection device, pressure sensor, or relays; identify and replace any malfunctioning devices.
C
Christopher PierceAug 15, 2025
Why does my mycom SCV Air Compressor have low oil-supply pressure?
- K
  Kendra JonesAug 15, 2025
  If your Mycom Air Compressor has low oil-supply pressure, there could be several reasons. Check for clogging in the oil filter element, indicated by a big difference in outlet/inlet pressures; remove any clogging and replace the lubricant if necessary. A defect inside the compressor could also be the cause; check the oil contamination level and overhaul the compressor if needed after vibration noise diagnosis. Insufficient oil in the oil separator can also lead to this issue; inspect the oil heater and related circuit relays, replacing parts as needed. Finally, check for extensive oil leaks in the machine room and around the compressor, and inspect for oil in the cooling water system, addressing any leaks found in the oil cooler heat exchanger tube.
J
jamesleonardAug 20, 2025
How to fix capacity control malfunction in my mycom SCV Air Compressor?
- C
  cody72Aug 20, 2025
  A capacity control malfunction in your Mycom Air Compressor can stem from a few causes. If the indicator isn't detecting 100% or 0%, replace the micro-switch. For malfunctions of unloader solenoid valves or related relays, replace parts affected by aging or address water leakage and replace the compromised components. Internal leakage of the unloader solenoid valves can also be a factor, particularly after prolonged low load operation; improve this by re-examining the operation method.
K
Kimberly AriasAug 25, 2025
Why is my Mycom Air Compressor leaking from mechanical seal?
- J
  james28Aug 25, 2025
  A leak from the mechanical seal on your Mycom Air Compressor can occur for several reasons. An initial leak after replacement is common until the seal and shaft surfaces mate; ensure the leak doesn't continuously increase. Deteriorated parts, such as O-rings, should be replaced due to aging degradation. Incompatibility between operating conditions (temperature, refrigerant) and lubricant can also cause leaks; re-examine operating conditions, and if necessary, re-select the lubricant, replacing all of the existing lubricant with the new type.
E
ericescobarAug 28, 2025
What causes faulty indication of capacity control position in my mycom SCV Air Compressor?
- N
  nelsonmeganAug 28, 2025
  A faulty indication of the capacity control position on your Mycom Air Compressor can be due to a few reasons. If the compressor indicator is imprecise, manually tighten the screws to the 0% indication position of the compressor capacity control. If the controller capacity control indicator is imprecise, replace the indicator cam. A malfunction in the potentiometer, often due to aging or prolonged partial load operation, requires replacing the potentiometer.

mycom SCV Series Specifications

General

Brand	mycom
Model	SCV Series
Category	Air Compressor
Language	English

Summary

Preface

Revision History

Details the changes and updates made to the instruction manual over different revisions.

Warranty and Disclaimer

Warranty Clauses

Outlines the terms and conditions of the product warranty provided by MAYEKAWA.

Disclaimer Clauses (Exclusion of Warranty Clauses)

Specifies conditions under which MAYEKAWA disclaims responsibility for malfunctions or damages.

Important Information

Intended Use of this Product

Defines the specific applications for which the screw compressor is designed.

Important Information for Safe Use of This Product

Provides critical safety guidelines and precautions for operating the compressor.

About this Manual

Information regarding manual updates, copyright, and usage.

Chapter 1 Safety

Observation;Prevention

Safety guidelines and preventative measures for operation and maintenance.

Warnings

Explains types of warnings and safety labels used in the manual.

Residual Risks

Identifies potential hazards and measures to mitigate them.

Safety Devices

Details essential safety devices and their functions.

Chapter 2 Compressor Specifications and Structure

Features of SCV-series Screw Compressors

Highlights key features like high efficiency, reliability, and low vibration.

Model Designation of the Compressor

Explains the meaning of the compressor model designation codes.

Compressor Specifications

Provides standard specifications like working fluid, capacity, swept volume, and port sizes.

Operation Limits

Details the maximum and minimum operating parameters for safe compressor use.

Compressor Structure and Mechanism

Explains the internal workings of the SCV-series screw compressor.

Chapter 3 Installation

General Precautions for Installation

Outlines general safety and procedural advice before installation.

Installation Works

Covers procedures for unpacking, storage, and transportation of the compressor.

Preparation for Installation

Details requirements for installation space, illumination, ventilation, and connecting ports.

Installation

Describes placement, shaft alignment, piping, and protective equipment installation.

Chapter 4 Compressor and Package Unit Operation

Adjustment of Vi

Explains how to adjust the internal volume ratio (Vi) for optimal performance.

Lubricating Oil (Refrigerant Oil)

Provides guidance on selecting, managing, and changing lubricating oil.

Chapter 5 Maintenance and Inspection

Precautions for Maintenance and Inspection

Lists crucial safety precautions before performing maintenance or inspection.

Maintenance and Inspection List

Details daily, periodic, and overhaul inspection items and their intervals.

Compressor Disassembly Preparation

Covers preparation steps, tools, and workplace requirements for disassembly.

Disassembly and Inspection

Provides step-by-step disassembly and inspection procedures for various components.

Reassembly

Details the procedures for reassembling the compressor after maintenance or overhaul.

Chapter 6 Troubleshooting

Compressor does not startup

Addresses issues when the compressor fails to start.

Compressor stops immediately after startup

Details reasons and solutions for immediate post-startup shutdowns.

Low oil-supply pressure

Addresses issues with insufficient oil supply pressure.

Abnormal vibration and;or noise of compressor

Addresses issues related to excessive vibration and noise.

Chapter 7 Related Documents

Exploded Views and Sectional Views

Provides visual diagrams of compressor parts and assemblies.

Parts Configuration Table

Lists part numbers, descriptions, and quantities for various compressor models.

Tightening Torques for Bolts and Nuts

Specifies torque values and methods for tightening fasteners.

Tools for Disassembly

Lists recommended tools for disassembling the compressor.

Related product manuals

Preview: mycom V-Series

Preview: mycom 2016 C Series

mycom 2016 C Series

mycom 1612LSC series