Recommended Cleaning Intervals For Sensors In Standard Pumps; Required Cleaning Intervals For Sensors In Explosion-Proof Pumps; Inspection Intervals - Grundfos SEG AUTOADAPT Montage- Und Betriebsanleitung

12.1 Recommended cleaning intervals for
sensors in standard pumps
For cleaning of sensors, see section 12.6.
Wastewater
Wastewater
containing dry
containing
solid matter or
grease
fibres
3 months 6 months
12.2 Required cleaning intervals for
sensors in explosion-proof pumps
For cleaning of sensors, see section 12.6.
Wastewater
Wastewater
containing dry
containing
solid matter or
grease
fibres
3 months 6 months

12.3 Inspection intervals

Warning
Except for service on the hydraulic
part, all other service work must be
carried out by Grundfos or an
authorised service workshop approved
for servicing Ex products.
Pumps running normal operation should be
inspected every 3000 operating hours or at least
once a year. If the dry-solid content of the pumped
liquid is very high or sandy, check the pump at
shorter intervals.
Check the following points:
• Power consumption
See pump nameplate.
• Oil level and oil condition
When the pump is new or after replacement of the
shaft seal, check the oil level after one week of
operation.
If the oil contains more than 20 % water, the shaft
seal may be defective. The oil should be changed
every 3000 operating hours or at least once a
year.
Use Shell Ondina 917 oil or similar type.
See sections 12.8 Oil change and 12.9 Service
kits.
• For cleaning of sensors, see section 12.6.
Used oil must be disposed of in
Note
accordance with local regulations.
22
The table states how much oil the pumps must have
in the oil chamber:
Pump type
Wastewater
SEG up to 1.5 kW
without
grease, dry
SEG 2.2 to 4.0 kW
solid matter or
fibres • Cable entry
Make sure that the cable entry is watertight and
12 months
that the cables are not sharply bent and/or
pinched.
See section 12.9 Service kits.
• Pump parts
Check the impeller, pump housing, etc. for
possible wear. Replace defective parts.
See section 12.9 Service kits.
Wastewater
• Ball bearings
without
Check the shaft for noisy or heavy operation
grease, dry
(turn the shaft by hand). Replace defective ball
solid matter or
bearings.
fibres
A general overhaul of the pump is usually required
6 months in case of defective ball bearings or poor motor
function. This work must be carried out by
Grundfos or an authorised service workshop.
• Grinder system/parts
In case of frequent choke-ups, check the grinder
system for visible wear. When worn, the edges of
the grinding parts are round and worn. Compare
with a new grinder system.
Quantity of oil
in oil chamber [l]
0.17
0.42