Decommissioning/Removal; Personnel Qualifications; Operator's Obligations; Decommissioning - Wilo Flumen OPTI-TR 20-1 Instrucciones De Instalación Y Funcionamiento

8

Decommissioning/removal

8.1

Personnel qualifications

8.2

Operator's obligations

8.3

Decommissioning

Installation and operating instructions Wilo-Flumen OPTI-TR 20-1, 28-1, 30-1, 40-1 Wilo-Flumen EXCEL-TRE 20, 30, 40
Decommissioning/removal
▪ A change in the viscosity and density of the fluid, e.g. caused by modified addition of poly-
mers or precipitating agents. CAUTION! This modification may cause a severely increasing
power consumption and even overload the system!
▪ Insufficient mechanical pre-cleaning, e.g. fibrous and abrasive content.
▪ Non-homogeneous flow conditions due to fixtures or deflections in the operating space.
▪ Vibrations due to blockage of the basin inlet/outlet and draining, modified air intake (aera-
tion) or the combined effect of several mixers.
Check system configuration and take countermeasures. CAUTION! Permanently increased
current consumption causes increased wear on the mixer! Contact customer service for
further assistance.
Monitoring fluid temperature
The fluid temperature must not drop below 3 °C. A fluid temperature below 3 °C results in
thickening of the fluid, which can lead to fractures in the propeller. If the fluid temperature
may sink below 3 °C, install an automatic temperature measurement device with advance
warning and deactivation functions.
Monitoring minimum immersion
The propeller must not emerge from the fluid during operation. Minimum immersion specifi-
cations must be observed! If fluid levels fluctuate significantly, install a level monitoring de-
vice. If the fluid level drops below the minimum immersion level, switch off the mixer.
▪ Operation/control: Operating personnel must be trained in the operating principle of the
complete system.
▪ Electrical work: A qualified electrician must carry out the electrical work.
▪ Installation-/dismantling work: The technician must be trained to handle the necessary tools
and required fastening materials for the present building site.
▪ Lifting work: A specialist suitably trained in the operation of lifting devices must carry out
lifting work. Evidence must be provided pursuant to BGV D8 or local provisions.
▪ Locally applicable accident prevention and trade association safety provisions.
▪ Observe all regulations for working with and underneath heavy suspended loads.
▪ Make available the required protective equipment and ensure that the personnel wear the
protective equipment.
▪ Ensure sufficient aeration in closed rooms.
▪ If toxic or suffocating gases build up, immediately initiate countermeasures!
The mixer is deactivated during decommissioning, but remains installed. This ensures that
the mixer is always ready for operation.
‡
To protect the mixer from frost and ice, always immerse the mixer completely in the
fluid.
‡
The fluid temperature must always be above +3 °C (+37 °F).
1. Switch off the mixer at the operating point.
2. Secure the operating point against unauthorized switch-on (e.g. seal off the main
switch).
▶ The mixer is decommissioned and can now be dismantled.
If the mixer remains installed after decommissioning, observe the following:
▪ Ensure that the aforementioned preconditions are maintained for the complete period of
decommissioning. If these prerequisites cannot be guaranteed, dismantle the mixer after
decommissioning!
▪ For an extended period of decommissioning, carry out a 5 minute function test at regular in-
tervals (monthly to quarterly). CAUTION! A function test should only be carried out under
the applicable operating conditions. Never run the machine dry! Failure to observe this
provision can lead to irreparable damage!
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