2202L5JE-DA-C5-N_2015.05.
5 Maintenance and Inspection
Compound 2-stage Screw Compressor 5.5 Reassembly
1612LSC Speed Increaser Type
5-67
Securing Seal Collar by fastening Set
Screw via Machining Hole in Cover
e)
Next, attach the O-ring [49] for the seal retainer (following picture to the right).
Take special care because users frequently omit to attach the O-ring 【49】 for oil
seal retainer.
Installing Oil seal Retainer Attaching O-ring [49]
f) Install the seal collar [109] to the rotor shaft. Before
assembly, apply sufficient lubricating oil to the rotor
shaft and seal in order to wash away any dirt.
After assembly, check movement by pushing the seal
collar with your hand in the axial direction. Take care not
to damage the O-ring [112] on the rotor shaft steps while
doing so.
g) Fasten the seal collar on the rotor shaft by screwing two
set screws [111] into the securing countersinking holes
on the rotor shaft. Perform this fastening work with an
Allen key via the machining hole in the speed increaser
gear cover. Failing to fasten the set screws at the
countersink holes will damage the rotor shaft, and it
can cause a leakage.
h) Attach the mating ring O-ring [103] and the mating ring
[101] to the seal cover [51].
i)
Apply oil to the seal cover gasket [52], align the gasket oil hole with the speed increaser gear casing
cover oil hole, and affix the gasket to the attachment (flange) side.
With the standard internal oil supply type compressors, the speed increaser gear casing cover and
the seal cover are connected by an oil supply hole. Oil flows from the notch in the seal cover
through the groove to the upper side of the seal cover, and then flows through the drilled oil supply
hole to the upper sliding surface of the mechanical seal.
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