BLACKMER HD942A, Инструкции по установке, эксплуатации и обслуживанию

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SEAL (PACKING) REPLACEMENT
CB9A-030 page 20/28
Two seals separated by a distance piece seal the gas in
the cylinder and prevent contamination by the
crankcase oil. The upper seal consists of pairs of
segmented packing rings, while the lower seal utilizes a
number of
PTFE
V-rings.
Before starting work on the compressor, note the seal
orientation indicated by the 6th digit of the Compressor
ID # shown on the compressor's nameplate. Also note
any tubing connections in the seal area. 1/4" NPT ports
are provided between each pair of seals to allow
venting or pressurization of the seal areas.
1. Follow steps 1 - 6 of "Compressor Disassembly."
2. UPPER PACKING BOX
a. Remove the bolts from the bottom of the
packing box then remove the packing gland
and packing spacer.
b. Remove the packing cups with packing ring
pairs and O-rings. If the packing cups are
difficult to remove, place a screwdriver blade in
the groove in each packing cup and tap lightly
with a rubber mallet. Do not deform the
packing cups or scratch their sealing surfaces.
c. Remove the packing cup gasket.
d.
Clean and inspect all parts, replacing as
needed.
e. Refer to the appropriate drawing for the proper
orientation of the packing cups and rings. Note:
the bottom ring set differs from the upper pairs.
f. Install the gasket packing cups, packing ring
sets and O-rings per the appropriate drawing.
g. Install the packing spacer and gland, then
secure by tightening the bolts evenly.
Figure 15 Packing Ring Detail
Figure 16 - Type 'A' Packing Detail