GE H301 Series Operating Manual page 127

Situation
Excessive packing leakage
Packing wear excessive
Ring, piston, liner and cylinder
Wear excessive
Wiper packing leaks
High discharge gas temperature
High discharge gas pressure
Potential common causes
• Worn packing rings
• Packing case bolts loose
• Packing rings incorrectly assembled/installed
• Improper lube oil selection and associated lube rate
• Contaminants (liquid or solid) affecting packing rings
• Packing not seated or properly run-in
• New packing installed on worn rod or damaged packing
case
• Improper packing ring side or end clearance
• Oil dilution from liquid carryover
• Improper oil supply – excessive or inadequate
• Inadequate lubrication – incorrect oil type, viscosity or
amount
• Solid abrasive debris entering cylinder with gas stream
• Piston Rings Worn, Stuck or Broken
• Piston Rings Worn, Stuck or Broken
• Cylinder or piston worn or scored
• Oil dilution from liquid carryover
• Worn packing rings
• Packing rings incorrectly assembled/installed
• Packing not seated or properly run-in
• Worn or scored piston rod
• Contaminants (liquid or solid) affecting packing rings
• Improper packing ring clearance; side or end
• Excessive compression ratio across cylinder – back
pressure from leaking suction valves or piston rings of next
higher stage cylinder
• High cylinder suction gas temperature
• Reduced cylinder suction pressure - flow restriction, inlet
strainer screen debris, suction pressure control valve or
inlet scrubber restriction
• Leaking discharge valves or piston rings
• Fouled intercooler piping
• Improper lube oil selection or rate
• Change in cylinder mode of operation, from single-acting
(SA) to double-acting (DA)
• Excessive compression ratio across cylinder – back
pressure from leaking suction valves or piston rings of next
higher stage cylinder
• Downstream line obstruction or isolation valve closed
H301/302 HSR Compressors | Rev. 2.2 | 117