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Bombas Ideal, S.A.
12.- MAINTENANCE
TAKE NOTE
Maintenance operations and repairs should be done by qualified staff who know about
mechanics, safety standards and hydraulics.
Special maintenance operations or important repair work should be done by specialised workshops.
12.1.- Dismantling.
Proceed as described in section 11.- ASSEMBLY AND DISMANTLING.
12.2.- Replacing the oil in the bearing support.
Remove the support drain plug, making sure that the oil drops into a suitable recipient.
Pour in oil after the support drain plug has been fitted (take into account what is described in
10.1.- Lubrication)
The oil removed must be handled according to health & waste standards in force.
12.3.- Replacement of packing.
Before replacing the packing its housing should be thoroughly cleaned.
Cut the pieces of packing as shown in the table and drawing below.
N-250
D
43
d
28
s
8
L
110
N
6
turns
Place the first ring of packing on the shaft and push it into its housing with the aid of the stuffing box.
Repeat the operation with each ring, making sure that the breakage plane of each ring is 90º along in
respect of the previous one.
TAKE NOTE
After fitting the packing rings tighten the two stuffing box nuts even and gently, so that
the shaft can turn freely by hand.
After a few minutes operation, observe if the stuffing box is dripping slightly.
12.4.- Replacing the mechanical seal
Dismantle the mechanical seal as described in 11.- Assembly and Dismantling. Thoroughly clean the seal
housing and polish surfaces to remove scratches or grooves that might be found. Use a very fine sheet of
emery for this purpose.
For assembling the mechanical seal take the following precautions:
Carefully clean all the parts affected.
Remove any possible protection from the contact surfaces.
Avoid any damage to the contact surfaces and the O-rings.
RN
N-400
N-500
63
75
45
55
10
10
170
205
6
7
L
N-550
N-600
N-800
90
94
109
65
70
12
12
245
260
305
8
8
S
RNE
F-500
F-501
105
105
85
77
77
12
14
14
286
286
5
5
5
30
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