During Operation; Maintenance Work - Wilo Rexa PRO Serie Instrucciones De Instalación Y Funcionamiento

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2.8

During operation

2.9

Maintenance work

10
Safety
▪ At the operation site adhere to applicable laws and regulations for work safety and accident
prevention.
▪ Disconnect the product from the power supply and secure against unauthorized switch-on.
▪ All rotating parts must stop.
▪ Ensure sufficient aeration in closed rooms.
▪ When working in chambers and closed rooms a second person must be present for safety
reasons.
▪ If toxic or suffocating gases build up, immediately initiate countermeasures!
▪ Clean product thoroughly. Disinfect products which have been used in fluids which are dan-
gerous to health!
▪ Ensure that there is no danger of explosion during all welding work or work with electrical
devices.
▪ Wear the following protective equipment:
– Safety shoes
– Hearing protection (according to the work regulations notice)
▪ Keep people out of the product's working area. There must be no persons in the working
area during operation.
▪ The operator must inform his/her superior immediately of any faults or irregularities.
▪ If defects which are dangerous to health arise, an immediate deactivation by the operator
must be performed:
– Breakdown of the safety and monitoring devices
– Damage to the housing components
– Damage to electrical equipment
▪ Never reach into the suction ports. The rotating parts can crush and sever limbs.
▪ If the motor emerges during operation, the motor housing can heat up to above 40 °C
(104 °F).
▪ Open all gate valves on the suction and pressure side of the pipe.
▪ Ensure minimum water submersion with dry-running protection.
▪ Under normal operating conditions the product has a sound pressure of below 85 dB(A).
However, the actual sound pressure level depends on several factors:
– Installation depth
– Installation
– Fixation of accessories and piping
– Duty point
– Immersion depth
▪ If the product is running under the applicable operating conditions, the operator must carry
out a sound pressure measurement. Hearing protection must be worn if the sound pressure
is above 85 dB(A) and an indication made in the work regulations!
▪ Wear the following protective equipment:
– Closed safety goggles
– Safety shoes
– Safety gloves that protect against cuts
▪ Always carry out maintenance work outside the operating space/installation site.
▪ Only perform maintenance work which is described in these 'Installation and operating in-
structions'.
▪ Only original parts from the manufacturer may be used for maintenance and repair. The use
of parts other than original parts absolves the manufacturer of any liability.
▪ Immediately clean up leakage from the fluid and operating fluid and dispose of according to
the locally applicable guidelines.
▪ Store tools in the places provided.
▪ Upon completion of the work re-install all safety and monitoring devices and check for cor-
rect functioning.
Change of operating fluid
In the event of a defect, a pressure of several bar can build up inside the motor! This pres-
sure escapes when opening the screw plugs. Screw plugs opened carelessly can be ejected
at high speed! To avoid injuries, observe the following instructions:
▪ Adhere to the prescribed sequence of work steps.
▪ Unscrew screw plugs slowly but never fully. As soon as the pressure escapes (an audible
whistling or hissing of air), do not turn any further.
WILO SE 2019-02