ProMinent Sigma 3 Basic Operating Instructions Manual page 66

Decommissioning
(Temporary) decommissioning
Final decommissioning
Disposal
66
CAUTION!
Warning of feed chemical spraying around
Feed chemical can spray out of the hydraulic compo‐
nents if they are manipulated or opened due to pressure
in the liquid end and adjacent parts of the system.
– Disconnect the pump from the mains power supply
and ensure that it cannot be switched on again by
unauthorised persons.
– Depressurise the system before commencing any
work on hydraulic parts.
WARNING!
Warning of eye injuries
When opening the relief valve, a spring under high ten‐
sion can jump out.
– Wear protective glasses.
CAUTION!
Danger of damage to the device
The device may be damaged by incorrect and improper
storage and transport.
– Take into account the information in the "Storage,
transport and unpacking" chapter if the system is
decommissioned for a temporary period.
1. Disconnect the pump from the mains.
2. Depressurise and bleed the hydraulic system around the pump.
3. Drain the liquid end by turning the pump upside down and allowing
the feed chemical to run out.
4. Flush the liquid end with a suitable medium - observe the material
safety data sheet! Flush the dosing head thoroughly when using
hazardous feed chemicals!
5. Possible additional work - refer to the "Storage, transport and
unpacking" chapter.
Also drain the gear oil - refer to the "Maintenance" chapter.
WARNING!
Warning of powerful spring
A powerful spring is located on the slide rod in the power
end - underneath the plate behind the backplate - which
could injure personnel when removed.
– Additionally secure the plate behind the backplate
before removing this plate. Carefully release the
spring using this securing mechanism.