Maintenance/Repair; Inspection- And Maintenance Intervals; Maintenance Works; Collecting Tank - Zehnder Pumpen Kompaktboy Série Manuel D'utilisation

7. Maintenance/repair

7.1 Inspection- and maintenance intervals

Inspection- and maintenance intervals according to DIN 1986 part 31: "Sewage ejection units
shall be checked by the operator once per month for serviceability and tightness by observing
a monitoring cycle..."
The unit shall be maintains by an expert. The time intervals shall not be greater than
st
1 ¼ year in case of units in industrial companies
nd
2 ½ year in case of units in apartment buildings
rd
3 1 year in case of units in single family houses

7.2 Maintenance works

Disconnect the power supply before carrying out any kind of work on the unit!

7.2.1 Collecting tank

Open the inspection cover and squirt the tank using a hose, in order to lose sediments from
the tank walls.

7.2.2 Non-return valve

Close the gate valve of the pressure pipe, if existing.
For exhaustion of sewage from the non-return valve, there is a drilled hole with a 1" internal
thread and equipped with a dummy plug on the right side of the tank. On this point, it is
possible to install e.g. a F+E stop cock (only for single unit).
Open the inspection cover and clean the non-return valve from the inside.

7.2.3 Miscellaneous

All continuative maintenance works must be effected by the after-sales-service.
The following substances must not be fed:
 Solid materials, fibrous materials, tar, sand, cement, ash, rough paper, paper towels,
wet wipes, hygiene paper, paper boards, rubbish, garbage, offal, greases, oils.
 All drainage objects lying above the backwater level (EN 12 056-1).
 Sewage with dangerous substances (DIN 1986-100), e.g. fatty sewage in industrial
kitchens. The inlet may only be effected through a grease separator according to
DIN 4040-1.
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