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2.8
During operation
2.9
Maintenance work
10
Safety
▪ 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, as well as in dry well installation, 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.
WARNING! When the pressure escapes, hot operating fluid can also be ejected.This can
lead to burns!To avoid injury, allow the motor to cool down to ambient temperature be-
fore commencing work!
WILO SE 2019-01
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