21B
21A
Appendix E—Parts Details for Models 521 and 1021
WARNING
CAUTION: Always relieve pressure in the
unit before attempting any repairs.
Sideplate Replacement Instructions
Model 521 Model 1021
Smooth
side
Smooth
side
Grooved
side
Grooved side must be against
the rotor.
Grooved
side
Outlet
Inlet
Feeder
channel
Install with feeder channel
against rotor pointing
toward the outlet.
31
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