4
2
IDENTIFICATION CODES
Each pump is supplied with the serial and model abbreviation and the serial number on the rating plate, which is riveted onto
the support side. Check these data upon receiving the goods. Any discrepancy between the order and the delivery must be
communicated immediately.
In order to be able to trace data and information, the abbreviation, model and serial number of the pump must be
quoted in all correspondence
.
3
GENERAL NOTES
"ZRM" pumps are designed and built for the transfer of liquid chemical products having a specific weight, viscosity, temperature
and stability of state appropriate for use with centrifugal pumps in a fixed installation, from a tank at a lower level to a tank or a
pipe to a higher level. The characteristics of the liquid (pressure, temperature, chemical reactivity, specific weight, viscosity,
vapour tension) and the ambient atmosphere must be compatible with the characteristics of the pump and are defined upon
ordering.
The pump's performance (capacity, head, rpm) is defined upon ordering and specified on the identification plate.
“ZMR” pumps are not self priming.
“ZMR” pumps cannot run dry.
The type of the solid particles contained in the pumped liquid depend on the mechanical seal; the presence of fibrous, adhesive
or abrasive bodies is not allowed.
Exame of the solid particles:
Mech.seal SF1-TS5
Mech.seal TS6
Mech.seal MSFA
– MTSC - MTSD
max quantity in weight %
1
3
1
3 (a) - 1
5 (b)
1
11
max dimension in mm
0.1
0.6
0.1
0.6 (a) - 1
2 (b)
0.1
0.8
max hardness Mohs index
1
2
3
6
1
2
Clockwise rotation seen from the motor side.
Make sure that the chemical and physical characteristics of the liquid have been carefully evaluated for pump suitability.
The specific weight which can be pumped at a temperature of
25°C
(both of the liquid and the ambient) depends upon the
diameter of the impeller (shown on the identification plate) and the installed motor power (shown on the motor plate) and has
to be defined upon ordering.
The level of kinematic viscosity must not exceed 20 cSt so as not to significantly modify the pump's performance. Higher values
up to a maximum of 250 cSt are possible provided that the pump is equipped with suitable impeller and motor to be defined
upon ordering.
The maximum continuous working temperature referred to water depends on the choice of materials (specified on the
identification plate):
80°C (176°F)
version WR
110°C (230°F)
version GF
variations may occur, depending on operating pressure
The ambient temperature interval is related to the choice of materials (specified on the identification plate):
0 ÷ 40 °C (14 ÷ 104 °F)
version WR
-20 ÷ 40 °C (-4 ÷ 104 °F)
version GF
SERIAL NUMBER
RANGE
MODEL
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