Wilo T 17 E3 Series - Maintenance Tasks; Operating Fluid; Operator Responsibilities

Safety en
Installation and operating instructions Wilo Motor T 12 ... 72 + EMU FA, Rexa SUPRA, Rexa SOLID 9
– Malfunction of the safety and monitoring device
– Damage to the housing parts
– Damage to the electrical equipment
ƒ Never reach into the suction port. The rotating parts can crush and sever limbs.
ƒ If the motor emerges during operation, the motor housing can heat up to above
40°C (104°F).
ƒ Open all gate valves in the piping on the suction and pressure side.
ƒ Ensure minimum water submersion through dry-running protection.
ƒ Under normal operating conditions, the sound pressure level of the device is below
85dB(A). However, the actual sound-pressure level depends on several factors:
– Installation depth
– Installation
– Fixation of accessories and pipe
– Duty point
– Immersion depth
ƒ If the device is operated under normal operating conditions, the operator must
measure the sound pressure. Ear protection must be worn for sound pressure levels
of 85dB(A) and above and this must be noted in the work regulations!
2.9 Maintenance tasks
ƒ Wear the following protective equipment:
– Closed safety goggles
– Safety shoes
– Safety gloves for protection against cuts
ƒ Always carry out maintenance tasks outside the operating space/installation site.
ƒ Only carry out maintenance tasks mentioned in these installation and operating in-
structions.
ƒ Only original parts from the manufacturer may be used for maintenance and repairs.
Use of parts other than the original parts releases the manufacturer from any liabil-
ity.
ƒ Collect any leakage of fluid and operating fluid immediately and dispose of it ac-
cording to the locally applicable guidelines.
ƒ Store tools at the designated locations.
ƒ After completing work, reattach all safety and monitoring devices and check that
they function properly.
Changing operating fluid
In case of a defect, a pressure of several bar can build up in the motor! This pressure
escapes when the screw plugs are opened. If screw plugs are opened without due cau-
tion, they can be ejected at high speed! To avoid injuries, observe the following instruc-
tions:
ƒ Adhere to the prescribed sequence of work steps.
ƒ Unscrew the screw plugs slowly, but never unscrew them completely. As soon as the
pressure escapes (audible whistling or hissing of air), stop turning the screw plug any
further.
WARNING!Hot operating fluids can also spray out when the pressure is escaping.
This can result in scalding! To avoid injuries, allow the motor to cool down to the
ambient temperature before carrying out any work!
ƒ When the pressure has completely dissipated, fully unscrew the screw plug.
2.10 Operating fluid
In the sealing chamber, the motor is filled with white oil. Operating fluid must be re-
placed during regular maintenance work and disposed off according to the local
guidelines.
2.11 Operator responsibilities
ƒ Installation and operating instructions must be in a language which the personnel
can understand.
ƒ Make sure that the personnel is relevantly trained for the specified work.
ƒ Provide the necessary protective equipment and make sure that the personnel wears
it.
ƒ Safety and information signs mounted on the device must be always legible.
ƒ Train the personnel pertaining to the functioning of the system.
ƒ Eliminate risk from electrical current.
ƒ Equip hazardous components inside the system with an on-site guard.
ƒ Identify and cordon off the work area.
ƒ To ensure safe working practice, define the responsibilities of the employees.