Heavy Duty Balanced Opposed Compressors - Ariel Corporation

FOR MODELS: JGZ AND JGU SECTION 1 - DESIGN SPECIFICATIONS & DATA
SECTION 1 - DESIGN SPECIFICATIONS & DATA
General
Ariel compressors are designed for ease of operation and maintenance. Experience has
shown that an Ariel compressor will normally provide years of satisfactory performance with
minimal proper maintenance.
While Ariel compressors share many similarities, each model has aspects that are unique to
the particular type. If you, as an operator, are familiar with Ariel compressors, it is still important
to review this manual to determine the differences. If you are new to Ariel compressors,
it is critical that you become very familiar with this manual prior to operating the compressor.
This manual is designed to provide information on installation, start up, operation and maintenance
of a JGZ or JGU compressor. If you have any questions please contact your packager.
If they are unable to provide resolution, they will refer your concerns to Ariel
Corporation. If you prefer, you may always contact Ariel directly 1 .
This manual provides design specifications for standard current production equipment at
publication date. Do not exceed information plates ratings for a particular compressor.
The location of the throws and the data shown on the Information Plates is very important
when communicating questions concerning an Ariel compressor.
Opposed Throw - Reciprocating Weight Balancing
Ariel recommends that the reciprocating weight differential between opposing throws be 5.0
pounds (2.3 kg) or less for JGZ and JGU compressors.
If replacing any major reciprocating component, that is; a connecting rod assembly, piston,
piston & rod assembly, crosshead-balance nuts or crosshead, weigh component parts on a
calibrated scale to 0.1 pounds (0.05 kg), record values for future reference and compare to
the Compressor Balancing Record sheet that comes in the parts manual with each compressor.
If there are weight changes, recalculate opposing throw reciprocating weight
differentials 1 . If not within the recommended limit, new balance nuts and/or crossheads are
to be selected to provide the least possible differential.
If it is desirable to exchange opposing throw compressor cylinder locations 1 , all reciprocating
components must be exchanged to the opposite throw, except the connecting rod
assemblies. Check the Balancing Record sheet and recalculate reciprocating weight differential,
with the connecting rod weights included. If not within the recommended limit, new
balance nuts are to be selected to provide the least possible differential.
If opposing throws can not be balanced within the recommended reciprocating weight differential
limit, contact your packager and/or Ariel 1 . When applying or re-applying a different cylinder
to a throw 1 , the opposing throw reciprocating weight differential must be re-calculated
1. Contact your Packager or the Ariel Response Center for detailed information. Refer to the last page
of this manual for Ariel contact information.
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