JEC Pumps JRZL Series, Operating & Maintenance Manual

Page: 21 / 66

20
Single Mechanical Seal Maintenance
Remove the Seal ring from the rotor case & rotor (shown in
Figure 13) and inspect them. If any seal is damaged, do not re-
use and replace it.
Clean both shaft ends and the rotor case before assembling.
Push the replacing NEW Seal ring into the rotor case O-ring and
turn fit into the seal pins on the seal body after Rotor Case
Assembly on page 16.
Place the rotor case face down on the table and loosening the
wrench bolts and washers using appropriate wrench.
Pull out the single mechanical seal bases out of the rotor case.
Insert the replacing NEW seal body into the rotor case and
tighten the wrench bolts and washers.
And see ‘Rotor Case Assembly’ on page 16 to continue.
Double Mechanical Seal Maintenance
Remove the Seal ring from the rotor case & rotor (shown in
Figure 16) and inspect them. If any seal is damaged, do not re-
use and replace it.
Clean both shaft ends and the rotor case before assembling.
Slide and insert the replacing NEW seal ring into the rotor case
after Rotor Case Assembly on page 16.
After rotor case removed (Figure 5), pull out and remove the
Double seal rotating part from the shaft and inspect them. If
any Double seal rotating part, Seal face and O-ring is damaged
do not re-use and replace it.
Clean both shaft ends and the rotor case before assembling.
Lubricate the replacing NEW Double seal rotating part O-ring
and install it in the Double seal rotating part. Slide and insert the
Double seal rotating part on the shaft making sure to line the
slot on the Double seal rotating part to the pin in the shaft.
Fig. 14
Fig. 13
Fig. 16
Fig. 15
Fig. 17