Chapter 3 Installation
UD-series Screw Compressor 3.2 Installation Works
3-9
3.2.6 Airtightness Test
Perform an airtightness test on the package unit before starting commissioning. To prevent water entry
in the package unit, use nitrogen gas or dry air for the airtightness test.
3.2.7 Vacuuming
Do not turn the compressor rotor shaft during vacuuming.
Vacuuming involves discharging the air in the unit before the refrigerant and oil are charged in the unit.
Always use a vacuum pump when vacuuming.
3.2.8 Lubricating Oil Charge
TO select the lubricating oil to be used, refer to Section 4. "Lubricating Oil
(Refrigerant Oil)" in this manual.
When refilling lubricating oil, ensure that it is clean and does not contain foreign
matters.
Be careful that air and water are not mixed in when refilling.
To ensure that the lubricating oil does not absorb air moisture, keep it indoors in an
airtight container until use.
Initial Charge of Lubricating Oil
Depending on the package unit configuration and operating condition, specify the procedure, method
and amount of the initial charge of lubricating oil, and make sure to provide users of this product with
such information.
In determining the procedure and work procedure, please care oil is to be filled in the oil filter and oil
cooler always.
Additional Charge of Lubricating Oil
Specify the procedure of the additional filling of lubricating oil based on the configuration of the package
unit, and make sure to provide users of this product with the information.
3.2.9 Charge of Refrigerant
Depending on the use working fluid and equipment configuration of your package unit, specify the work
procedure that considered safety enough, and conduct the refrigerant initial filling work accordingly.
In addition, specify the procedure of the additional filling of refrigerant, make sure to provide users of
this product with the information.
3.2.10 Checkout after Installation
Depending on the package unit to which this product is installed, formulate the necessary confirmation
items and methods for package unit after installation and conduct them accordingly before the
commissioning. In addition, make sure to record and keep the results of your confirmation.
To Next Page
Loading...
Need help?
General
