5
Technical Description
Scheduled Maintenance Cards
120/140 Dual Stage Rotary Vane Pumps User Manual/ 87-900-937-01(L)
NOTE
For a description of how to disassemble the electric motor, see the Unscheduled
Maintenance Card No. 105.
4. On DS402 1Ph, DS402 3Ph, DS602 1Ph and DS602 3Ph: remove
the screw (111) and remove the seal (110)). Slacken the nut
locking the half-joint (20) to the shaft of the rotor (39) and take
out the half-joint. Remove the tongue (37) with it as well.
5. Unscrew the securing screw (47) and remove the valve screen
(49).
6. Slacken the four nuts (64) and take out the tie-rods (44) and the
complete functional block (76), lifting it from the pump support
(34) and take out the OR gaskets (27) and (45), from the gas
ballast line and suction line respectively.
NOTE
Be careful not to cut the lip of the oil seal with the sharp edges of the shaft key
seat.
7. Remove the screw (102), take out the arm (101) from the rod.
NOTE
When reassembling, replace all the gaskets stripped down.
CAUTION!
When reassembly is complete, proceed to fill the pump with oil again following
the instructions of Unscheduled Maintenance Card No. 102.
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