Vilter VSM 71-701, Руководство по эксплуатации и обслуживанию

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60
Service
0.05 ANNUAL INSPECTION
The Vilter Single Screw Compressor is designed
for long periods of trouble free operation with a
minimum of maintenance. However, a yearly in-
spection is recommended so any irregular wear is
noted and rectified. At this time, the bearing float
is measured for the main rotor and gate rotors.
The following are the procedures used in measur-
ing the main rotor and gate rotor bearing float.
CAUTION
When taking the measurements, do not exceed
300 to 500 Lbs. of force at point of contact or
damage may result to the bearings.
A) Shut down and de-pressurize the unit, as
outlined in section 0.01.
B) Main rotor bearing float.
1) Remove the coupling guard, then re-
move the center member from the cou-
pling.
2) Attach a dial indicator to the compres-
sor frame as shown and zero indicator.
Place a lever arm and fulcrum behind
the compressor coupling half and push
the coupling towards the motor (note
measurement).
TABLE 0.1MAXIMUM BEARING FLOAT
MAIN GATE
Bearing Float 0.003” 0.002”
Maximum Force 300 to 500 200 to 300
Lbs. Lbs.
3) Re-Zero indicator, now position the ful-
crum on the motor and use the lever arm
to push the input shaft towards the com-
pressor (note measurement).
4) Add both readings, the total indicator
movement is the bearing float and this
should not exceed 0.003”.