GE H301 Series, Руководство по эксплуатации

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H301/302 HSR Compressors | Rev. 2.2 | 101
annual maintenance Checklist
Maintenance check list- 6 months
(plus daily/monthly/3 months/6 months checks)
Time interval
Check drive alignment, coupling (rim and face) including axial thrust. 8,000 hours
Check critical frame running gear clearance – main, connecting rod and
thrust, if readings outside tolerance limits, repair or replace affected
components as required.
8,000 hours
Check critical crosshead pin/bushing and guide clearances, and record
micrometer readings. If reading outside tolerance limit repair or replace
affected components as required. Replace pin roller bearing.
8,000 hours
Inspect cylinder valves for damaged damage or broken components, rebuild
or replace as required.
8,000 hours
Inspect cylinder bores for wear or damage, and record micrometer readings. 8,000 hours
Pull cylinder’s piston rod assembly – clean and inspect for wear, replace worn
or damaged components as required.
8,000 hours
Rebuild packing cases. 8,000 hours
Record clearances between crosshead and sleeve. 4,000 hours
Pressure (leak down) test cylinder lubrication distribution divider blocks for
proper operation.
8,000 hours
Inspect “no-flow” on cylinder lubrication distribution divider blocks for proper
operation.
8,000 hours
Calibrate and re-certify accuracy of gauges and transmitters, for all
significant pressure and temperature points.
8,000 hours
FoRm 13 Annual maintenance checklist
optional VVCP assembly Capacity Control
Always review the use of a VVCP to change load conditions
to verify acceptable compressor performance before
adjustment. Using a VVCP for capacity control has an impact
on the compressor performance characteristics as well as
horsepower and flow.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (9)
The VVCP, shown in “Figure 20” is an optional capacity control device used to
adjust the head end (HE) clearance of the cylinder. Most compressor cylinders can
be equipped with VVCPs, by replacing the fixed clearance HE cylinder head.
Reciprocating compressors are positive displacement devices, compressing a
specific volume of gas with each piston stroke. The operating conditions can vary
across a range of pressures, temperatures, flows and gas mixes, depending upon
the actual field application. The use of a VVCP is one method of capacity control
that can be used to efficiently adjust the compressor throughput and power.
The VVCP is designed to add a variable amount of volumetric clearance to a
compressor cylinder. As the piston approaches the cylinder HE, gas is trapped in
the VVCP clearance volume and does not exit the cylinder. As the piston travels
back toward the crank-end of the cylinder, the trapped HE gas re-expands into the