
6 UNIBLOC-PD Operation & Service Manual: PD600-677
1.2.2 Noise Emission
Under certain operating conditions, pumps and/or drives and/or the systems within which they are installed can pro
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duce sound pressure levels that exceed 80dB. In such cases ear protection should be used.
1.2.3 Marking – Standard
Standard marking is machined on the side of pumps’ bearing housing. Pump size is machined on rotor housing next
to the ports. See figure 1.4 for details.
2.0 Safety
2.1 General
This information must be read carefully before installation, operation or servicing. The safety instruction must always
be available for the pump operator. The following symbols are used.
WARNING: Indicates instructions that can affect personal safety if not followed.
WARNING: Indicates electrical voltage instructions that can affect personal safety if not fol
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lowed.
ATTENTION: Indicates instructions to be considered for safe operation and to protect the
pump and pump unit.
2.2 Safety Instructions
Incorrect installation, operation or maintenance of the equipment can cause serious personal injury and/or damage to
the equipment and will invalidate the warranty. Make sure the pipes are well supported as the pump is not meant to
serve this purpose. Keep in mind that pipes filled with liquid are very heavy. See fig. 2.1 for recommended pipe layout.
WRONG
RIGHT
PUMP SIZE
SERIAL NUMBER
fig. 1.4
fig. 2.1