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Shearing hazards
Thermal hazards
Hazard due to articles of clothing
being caught, etc.
Hazards due to noise
Leakage
2.6
Safety instructions for installation
and maintenance work
57
Never put fingers, hands, arms, etc. in the suction or outlet openings
or another opening (such as the hole of the venting screw). To avoid
the penetration of foreign objects, leave the protective covers or
packaging on until they have to be removed for installation. If the
packaging or covers of suction or outlet openings are removed for
inspection purposes, they must be put back on afterwards to protect
the pump and ensure safety.
Most drive surfaces can become hot during operation. The areas of
the stuffing box and bearing bracket on the pump can become hot in
the event of a malfunction or incorrect setting. The surfaces in ques-
tion also remain hot after switching off the unit. These surfaces may
only be touched with caution. If required, wear protective gloves if
these surfaces must be touched while they are hot.
If the packing is too tightly sealed, the water coming out of the stuff-
ing box can be so hot that there is a danger of scalding. Make sure that
the drained water is not too hot for more intensive contact with skin.
Components which are subject to temperature fluctuations, so that
touching them can therefore be dangerous, must be protected by
suitable devices.
Do not wear loose or frayed clothing or jewellery which could be
caught by the product.The devices for protecting against accidental
contact with moving parts (e.g. coupling protection) may only be dis-
mantled when the system is at a standstill.The pump must never be
put into operation without these protective devices.
If the noise level of the pump exceeds 80 dB(A), the valid health pro-
tection and safety regulations must be complied so that operating
personnel of the system aren't exposed to excessive noise. The sound
pressure specifications on the rating plate of the motor must be
observed. The sound pressure value of the pump is generally about
the same value as that of the motor +2 dB(A).
Leakage of dangerous (explosive, toxic, hot) substances which come
from the pump (e.g. shaft seal) must be avoided to protect people and
the environment, under the observation of local standards and regu-
lations.
The pump must never be operated without fluid. Otherwise, this can
cause the shaft seal to be destroyed, thereby endangering people and
the environment.
The operator must ensure that all installation and maintenance work
is carried out by authorised and qualified personnel, who are suffi-
ciently informed from their own detailed study of the operating
instructions.
Work to the product/unit must only be carried out when at a standstill.
It is mandatory that the procedure described in the installation and
operating instructions for shutting down the product/unit be com-
plied with.
Immediately on conclusion of the work, all safety and protective
devices must be put back in position and/or recommissioned.
Pumps which pump hazardous fluids must be decontaminated.
WILO SE 07/2013
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