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6.4.1
Maintenance work
20
Installation and electrical connection
DANGER
Risk of fatal injury due to dangerous lone working practices!
Working in pump chambers and tight spaces as well as working where there is a danger
of falling is dangerous work. This work must not be carried out alone!
• Only carry out work with another person!
CAUTION
Material damage due to incorrect fixation
Incorrect fixation may limit the functionality of the mixer or damage it.
• If the mixer is fixed to a concrete structure, use anchor bolts for fixation. Follow the
manufacturer's installation instructions! Temperature specifications and hardening pe-
riods must be strictly observed.
• If the mixer is fixed to a steel structure, ensure that the structure is sufficiently strong.
Use fixation materials with sufficient strength!
Use suitable materials to avoid electrochemical corrosion!
• Tighten all screwed connections. Observe torque specifications.
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Wear protective equipment! Observe the work regulations.
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Protective gloves: 4X42C (uvex C500)
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Safety shoes: Protection class S1 (uvex 1 sport S1)
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Wear a safety harness where required!
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Safety helmet: EN 397 Conforms to standards, protection against lateral deformation
(uvex pheos)
(When using lifting equipment)
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Prepare installation site:
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Clean, free of coarse solids
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Dry
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Frost-free
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Disinfected
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Work must always be carried out by two persons.
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Demarcate the working area.
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Unauthorized persons must be kept away from the working area.
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From a working height of more than 1 m (3 ft) above the ground, use scaffolding with a
safety harness.
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Toxic or asphyxiating gases may build up during work:
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Observe protective measures according to work regulations (gas measurement, carry
gas warning device with you).
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Ensure sufficient ventilation.
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If toxic or asphyxiating gases accumulate, leave the workplace immediately!
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Install lifting equipment: even surface, clean, firm bearing surface. Storage location and
installation site must be easily accessible.
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Attach chain or wire rope to handle/attachment point with a shackle. Only use techni-
cally-approved lifting gear.
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Do not stand in swivel range of hoist.
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Install all connection cables properly. No risk (tripping hazard, damage during operation)
must be posed by the connection cables. Check whether the cable cross-section and the
cable length are sufficient for the selected installation type.
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Observe minimum clearances to walls and any fixtures.
After a storage period of more than 12 months, carry out the following maintenance tasks
before installation:
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Rotate the propeller.
See section "Rotating the propeller [} 35]".
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Oil change in sealing, gear and pre-chamber.
See section "Oil change [} 36]".
WILO SE 2021-10
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