7 Servicing/Maintenance
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Vitaprime
a)
b)
101.1
412.1
210
433
471.1 412.5
922
101.2
902 230 940
433
A
471.1
210
940
Fig. 11:
Mechanical seal design Q, operating mode DB
a) Sectional drawing
b) Installation dimension A
1. Fit O-ring 412.5 in seal cover 471.1.
2. Insert the mating ring (motor end) of mechanical seal 433 into seal cover 471.1.
3.
On sizes 42-146 and 52-164
: Fit hexagon head bolts 901.4 in seal cover 471.1.
On sizes 40-146, 50-164, 60-200, 65-200, 80-240-11 and 80-240-15
: Fit and
tighten studs 902 in pump casing 101.1.
4. Fit seal cover 471.1 on shaft 210. Slide it right to the end of the shaft.
5. Slide the primary rings of mechanical seal 433 onto shaft 210.
6. Check distance A: This value must be observed to make sure the load on the
mechanical seal is evenly distributed.
Correct values:
Size 40-146: A = 16 mm
Size 50-164: A = 17.5 mm
Size 60-200: A = 15.5 mm
Size 65-200: A = 15.5 mm
Size 80 240-11: A = 19.5 mm
Size 80 240-15: A = 19.5 mm
7. If value A is correct, tighten the grub screws of the primary ring.
8. Fit the mating ring (pump end) into the rear end of pump casing 101.1.
9. Carefully place pump casing 101.1 on bearing housing 350. Make sure not to
damage the seal.
10. Fasten pump casing 101.1 to bearing housing 350 with hexagon socket head cap
screws 914.2.
11. Slide seal cover 471.1 right against pump casing 101.1. Fasten the seal cover.
12.
On sizes 42-146 and 52-164
: Fasten it with hexagon head bolts 901.4.
On sizes 40-146, 50-164, 60-200, 65-200, 80-240-11 and 80-240-15
: Fasten it with
nuts (69).
7.5.5 Fitting the impeller and the pump casing
7.5.5.1 Sizes 40-146, 50-164, 60-200, 65-200, 80-240-11 and 80-240-15
1. Slide a suitable spacer disc 551 onto shaft 210.
2. Insert key 940 into the keyway of shaft 210. Fit impeller 230.
3. Fit O-ring 412.1 in impeller nut 922. Secure impeller 230 with the nut.
4. Fit O-ring 412.2 in the groove of pump casing 101.1.
5. Fit pump casing 101.2. Secure it with clamping piece 81-44.
