Grundfos MTS 140, Installation And Operating Instructions Manual

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8. Taking the product out of operation
Take the following measures whenever the pump is shut down:
CAUTION
Corrosive liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Toxic liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold surface
Minor or moderate personal injury
- Make sure that no one can accidentally
come into contact with hot or cold
surfaces.
The pump is to be... Action
... shut down for a
prolonged period:
Take measures suited to the pumped liquids in the table below.
... emptied:
D8.6: Close the suction-side and discharge-side valves and drain the pump by
removing the drain plug and turning the pump manually until the pump is empty.
DQ: Close the discharge-side valve and empty the pump through the suction-side
by turning the pump manually.
... dismounted:
Switch off the power supply, and make sure that it cannot be accidentally switched
on.
... stored: Follow the storage instructions (section 6.4 Storage ).
Behaviour of the
pumped liquid
Duration of shutdown
(depending on process)
Short Long
1. Solids
sedimenting
Flush the pump. Flush the pump.
2. Solidifying/
freezing,
non-corrosive
Heat up or empty pump and tanks. Empty pump and tanks.
3. Solidifying/
freezing,
corrosive
Heat up or empty pump and tanks.
• Empty pump and tanks.
• Apply corrosion inhibitor to pump and
tanks.
4. Remaining liquid,
non-corrosive
- -
5. Remaining liquid,
corrosive
-
• Empty pump and tanks.
• Apply corrosion inhibitor to pump and
tanks.