Chapter 2
Compressor Specifications and Structure
UD-series Screw Compressors
2.2 Model designation of the Compressor
2-3
3) Systems that use Economizer and Sideload have an extremely high risk of reduced capacity.
4) When used with Liquid injection, the capacity may be reduced.
5) The notation for no symbol is left-justified.
[6] Discharge port
Symbol
Supplement
H
Vi = 5.80
M
Vi = 3.65
L
Vi = 2.63
KL
Vi = 2.20
JL
Vi = 2.00
FK
Vi = 1.80
1) KL, JL and FK are special ports.
2) For two-letter symbols,
First letter: Slide valve, second letter : Bearing head port.
[7]
Booster specifications
Symbol
Specification
No symbol
Standard
B
Booster specifications
1) The notation for no symbol is left-justified.
[8] Economizer port, Liquid injection port
Symbol
Economizer port
Liquid injection port
No symbol
no port
no port
E
with port
no port
I
no port
with port
X
with port
with port
1) X includes I2 ports. However, No setting for rotor diameter 400.
2) The notation for no symbol is left-justified.
Refrigerant Auxiliary Symbols
In the past, in this series, "2" was added to the model name (left side of "-") for R22 application, but
currently not added.
Example: Conventional F200LUD2, Currently F200LUD
