GENERAL INFORMATION
CB5A-021 page 4/24
An 11 character "I.D. No." identifies the construction of the compressor.
B
A
B
A
C
1
T
A
4
C
0
VALVES
Code Fields
Steel, w/ Liquid Relief
BA
1 & 2
O-RINGS
Field 3
Buna-N
B
GASKETS
Field 4
Aluminum
A
PISTON RINGS
Field 5
Carbon Filled PTFE
C
SEAL (PACKING) ORIENTATION
Field 6
All Lips up
1
SEAL MATERIAL
Field 7
PTFE
T
CYLINDER & HEAD
Field 8
Ductile Iron
A
GGG40.3 Ductile Iron
D
PISTON RODS
Field 9
Black Surface Steel
4
CRANKSHAFT & OIL FILTER
Field 10
No Oil Filter
A
Extended Crankshaft / No Oil Filter
B
Spin-on Oil Filter (std)
C
Ext. Crank / Oil Filter
D
FLYWHEEL *
Field 11
Standard Flywheel
0
No Flywheel
N
* Models Configured prior to 11/01/2017 used an “A” in this position to indicate standard selections.
Note: A 'Z' in any field indicates a non-standard option. No model is available with all shown options.
Table 2 - ID Number Key
Table 3 - Year of Manufacture *
Serial Number: 6 digits and a suffix letter indicating the year of manufacture.
Suffix
P
Q
R
S
T
U
V
W
X
Y
Z
Year
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
* Starting in 2005, the suffix letter is no longer used; the year & month of construction is indicated on the nameplate
MAXIMIZING COMPRESSOR LIFE
Life of critical compressor components such as piston
rings, valves and packing will vary considerably with
each application, installation, and operating procedures.
Premature failure of wear parts can often be attributed to
one of the following causes:
Excessive Temperatures
Primary causes are:
Operating at pressures other than those originally
specified.
Handling a different gas than originally specified.
Clogged strainer or filter elements.
Line sizes too small, or other flow restrictions.
Excessive ambient temperature or suction gas
temperature.
Valve problems. (See Foreign Material.)
Badly worn piston rings. (See Foreign Material.)
Lower operating temperatures will increase valve and
piston ring life significantly.
Extreme temperatures caused by
abnormally high discharge pressure or
valve problems can be a source of
ignition in explosive atmospheres
causing severe personal injury or death.
Hazardous gases
can cause property
damage, personal
injury or death
Foreign Material
Solid particles in the gas stream will:
Rapidly wear the piston rings and score the cylinder
wall.
Destroy the rod packing causing excessive leakage
and score the piston rods.
Lodge in the valves causing loss of capacity and
broken valve plates and springs.
Liquid in the gas stream will:
Cause broken valve plates and springs.
Destroy the compressor if present in sufficient
