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Idiomas disponibles
CONTENTS
1.
2.
2.1
2.2
3.
4.
4.1
4.2
5.
6.
6.1
6.2
6.3
7.
8.
9.
10.
Before beginning installation procedures,
these installation and operating instruc-
tions should be studied carefully. The in-
stallation and operation should also be in
accordance with local regulations and ac-
cepted codes of good practice.
1. Applications
The GRUNDFOS pumps, types CRK, CHK, SPK,
MTH and MTR, are multistage centrifugal pumps de-
signed for pumping liquids for machine tools, con-
densate transfer, liquid transfer in industrial washing
machines and similar applications.
The pump must not be used for the trans-
fer of inflammable liquids such as diesel
oil, petrol or similar liquids.
The pumps are designed for pumping liquids with a
density and viscosity corresponding to those of wa-
ter. The pumped liquid must not contain abrasive
particles or fibres.
When pumping liquids with a density or viscosity
higher than that of water, the motor size should be
taken into consideration.
2. Type designation
The standard range of pumps encompasses com-
plete impeller in chamber combinations. On request,
other lengths, against duty combinations, can be
supplied by fitting empty intermediate chambers in-
stead of standard chambers with impellers.
The pump key on the pump nameplate indicates the
number of chambers and impellers fitted to the
pump.
4
2.1 Pump key for CRK, CHK, SPK and MTH
Page
Example
4
4
Pump range
4
Nominal flow rate in m³/h
4
Number of stages x 10 (SPK x 1)
4
4
Number of impellers
5
Code for pump version
5
Code for pipework connection
6
6
Code for materials
6
Code for shaft seal and rubber pump parts
6
7
7
2.2 Pump key for MTR
7
8
Example
8
Pump range
Nominal flow rate in m³/h
Number of stages
Number of impellers (is only used
if the pump has fewer impellers
than chambers)
Number of impellers with reduced
diameter
Code for pump version
Code for pipework connection
Code for materials
Code for shaft seal
3. Technical data
Minimum liquid
temperature [°C]
Maximum liquid
temperature [°C]
Maximum ambient
temperature [°C]
4. Installation
The pump must be installed so that per-
sons cannot accidentally come into con-
tact with the hot surface of the motor.
-15
-10
-10
-10
-10
+90
+90
+90
+90
+90
+40
+55
+40
+40
+40
25
8
10
10
25
IP 54
IP 54
IP 54
IP 54
IP 54
IP 55
IP 55
IP 55
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