Maintenance
7.2.1 An t ifriction bearin gs lubric ated with grease
When set up vertically, the bearings are lubricated for life.
Applies to ID, ZD and RG designs.
Specified lubricants (→ 9.2.5 Lubricants, Page 48).
1. For ID and Z D designs, relubricate the bearings ev ery 4000
operating hours:
– Set grea se press onto grease nipple (119).
– Lubricate the bearings untiltheusedgreaseemerges
from the bearing cover (131). When doing so, also
observe the recommended amounts of lubricant
(→ Lubricant quantities, Page 53).
– Wipe off excess grease.
2. For RG design, proceed as follows every 10,000 ope rating
hours:
– Remove the bearings.
– Check bearings for damage and wear. Replace bear-
ings if necessary.
– Install bearings.
7.2.3 Spur gear with oil lubrication (RG design)
NOTE
Damage to the spur gear due to incorrect lubricants!
Do not mix mineral and synthetic lubricants.
Use the specified lu bricants (→ 9.2.5 Lubricants,
Page 48).
1. After 10,000 operating hours, bu t at the latest after 3 years,
change the gear oil in the spur gear.
2. Remove the ventilation filter (13).
3. Remove the screw plug (10) and joint tape (11) from the
bearing pedestal (110). Collect used oil in a suitable con-
tainer.
4. Install the screw plug (10) and joint tape (11) in the bearing
pedestal (110).
5. Fill with new gear oil up to the middle of the oil level sight
glass (60). When doing so, observe t he lubrication quanti-
ties (→ Gear oil for the spur gear, Page 48).
6. Install the ventilation filter (13) .
7.2.4 Joints with oil lubrication
Specified lubricants (→ 9.2.5 Lubricant
s, Page 48).
Consult the manufacturer when using other joint oils.
Joints are lubricated for li fe, oil changes r ecommended.
1. Change the joint oil after 8000 operating hours
(→ Lubricant quantities, Page 53).
2. Check the joint sleeve for leaks when changing the oil.
7.2.5 Pac king gl and
Replacing the packing gland
The packing g land must always leak slig htly to carry the
frictional heat away.
Larger leaks in the initial hours of operati on lessen during
the running-in period.
1. If there i s increased leakage: gently tighten the hexagon
nuts (202 ) on th e stuffing box gland (203).
2. If there is still high leakage, remove the gland packing
(207).
3. Clean the stuffing box and sh aft in the area o f the packing
rings.
4. Based on the classification in the specific pump group, pre-
pare the new packing rings (→ Technical data for packing
gland, Page 52).
5. Install packing rings in packing chamber.
Adjusting the packing gland
The drip leakage of the packing gland is adjusted incrementally.
This requires switching the pump o n and off.
NOTE
Damage to the packing gland due to high tempe ratures!
Ensure a packing gland temperature of 20–60 °C above
the fluid temperature during the adjustment process.
If th e temperature suddenly increase s, loosen the packing
gland immediately and repeat the adjustment process.
1. gently tighten th e hexagon nuts (202) on the stuffing box
gland (203).
2. Switch pump on .
3. Check the leakage rate: Immediately after starting up
for the first time, ensure the permissible leakage rate of
50–200 drops/minute.
4. Switch off the pump.
5. Repeat the adjustment process until the correct leakage
rate of 2–20 drops/minute is reached.
7.2.6 Mechanical seals
Mechanical seals have functional leaks (→ manufacturer’s
specifications).
Mechanical seals are maintenance-free.
In the event of major leaks due to wear: Replace the
mechanical seal and check that the auxiliary systems are
functioning.
7.2.7 Drive seal (RG design)
Drive seals are maintenance-free .
In the event of major leaks: Replace the drive seal (79).
26 AE BA-2020.05 en-US 260371 – 176-982/0
To Next Page
Loading...
