Operation Manual
1.0 General
1.1 Pump limits of application or use
This pump has been designed for pumping
a range of viscosities from water to semi-
solid, suitable for both homogeneous liquids
and liquids with non abrasive particles/
solids in suspension.
Speeds to 1000rpm and temperatures to
158°F can be accomodated on this pump.
These conditions cannot always be
accomodated simultaneously.
The STP125 has been designed to operate
at a maximum continuous discharge pressure
of 145 psi. However the STP125 is capable
of withstanding discharge pressures up to a
maximum of 160 psi intermittently. At
pressures above 145 psi there is the
possibility of leakage from the primary seal, if
this occurs and the seal continues to leak at
pressures below 145 psi it is an indication
that the primary seal may have been
permanently damaged and should therefore
be replaced at the earliest opportunity.
Continous operation at pressures above 145
psi will result in premature failure of the
pump.
If the user has not specified the pumping
application or needs to change it, it is
important to confirm that the materials of
construction and product seals are
compatible with the pumping application
and that adequate NPSH is available.
For specific guidelines contact your supplier
quoting pump serial number, system and duty
details. (e.g. media, pressure(s), flowrate,
pumping temperatures etc).
1.2 Duty conditions
The pump should only be used for the duty
for which it has been specified. The
operating pressure, speed and temperature
limits have been selected at the time of order
and MUST NOT be exceeded.
These details are stated on the original
documentation and if not available may be
obtained from your supplier quoting pump
serial number.
1.3 Noise levels
Under certain operating conditions pumps
and/or drives and/or the systems within
which they are installed can produce sound
pressure levels in excess of 85dBA. When
necessary personal protection against noise
should be taken to safeguard the hearing of
persons who are likely to be in close
proximity to the equipment.
1.4 Utility requirements
Electrical supply:-
This pump may be supplied bareshaft or
coupled to an electric motor.
Hydraulic supply:-
This pump may be coupled to a hydraulic
motor.
Temperature control:-
Temperature control jackets will require
appropriate hot or cold media supply i.e. oil/
water/steam.
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STP125 Page 4
