2201Q4JE-MY-C9-N_2018.01.
Chapter 5 Maintenance and Inspection
Compound 2-stage Screw Compressor 4032**C
5.1 Precautions for Maintenance and Inspection
5-2
When checking the operation data of units and executing other daily maintenance
services, pay particular attention to avoid touching the area heated to a high
temperature causing skin burns or inadvertently moving the handle of a valve
leading to an erroneous operation.
In the disassembly/inspection workplace, secure a sufficient space for temporary
storage of the removed parts and tools, replacement parts, and for the
disassembling work as well as safety passages, and then put up necessary off-limit
signs.
In the workplace, secure a sufficient space and refrain from putting tools directly on
the floor or from haphazardly laying wires.
Keep the floor clean all the time. Leaving the floor smeared with oil and the like
causes it to be slippery and may result in the fall and injury of personnel. Thus, do
not leave it but wipe it off right away.
Make sure that the temperature of the high temperature sections such as
bearinghead and discharge lines has been cooled down to normal ambient
temperature, before working on them.
When disassembling and reassembling the compressor, use the specified tools
properly. Before starting to use those tools, gain the full understanding of their
characteristics and the method for use.
During the maintenance service, keep the tools clean all the time. Using those tools
smeared with oil increases the risk of slip and fall, leading to an injury. Also during
the service, there is a risk of foreign matters intruding inside the compressor to
cause its damage.
Parts are slippery with oil. Fully watch out for the risk of any object falling down.
Pay attention to any parts falling down, which could lead to personal injury.
Before disassembly, inspections, and handling of the compressor, sufficiently
understand the disassembly and assembly procedures.
This manual is not intended to provide complete disassembly and assembly
procedures for the compressor. Instead, it describes only the important points in
relation to the maintenance service of the compressor.
If complete disassembly and assembly of the compressor are required, please
contact your nearest sales office or service center of MAYEKAWA.
When removing a part, be careful not to damage it.
Place the removed parts on a clean workbench in an orderly manner.
For cleaning parts, use kerosene and/or machine parts cleaner.
Washed parts shall be dried by compressed air or wiped up using clean cloth. Do
not use synthetic textiles or woolen textiles to prevent fibers from attaching the
parts.
When separating the assembled compressor casings, sometimes it is difficult to
separate them due to the gasket stuck. In such a case, never hammer in a screw
driver or flat chisel into the gap. Screw jack bolts using the screw holes to separate
the casing each other. When some gap is observed between them, use a scraper
to remove one side of the gasket from the surface.
Removed bolts from each part should be classified into each used section to
prevent confusion.
