Product Introduction; Intended Use; Pumped Liquids - Grundfos MTR Montage- Und Betriebsanleitung

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2. Product introduction

These installation and operating instructions describe
Grundfos MTR model A and model C pumps fitted
with 50 Hz or 60 Hz IEC motors.
MTR pumps are vertical multistage centrifugal
pumps designed to be mounted on top of tanks with
the chamber stack immersed in the pumped liquid. To
meet specific depths of tanks or containers, the
immersed length of the pump can be varied using
empty chambers.
The product consists of a motor and a pump unit.
Material versions for MTR
• A-version with wetted parts of cast iron and
stainless steel.
• I-version with wetted parts of stainless steel grade
EN/DIN 1.4301.
• N-version with wetted parts of stainless steel
grade EN/DIN 1.4401.

2.1 Intended use

The tank-mounted multistage centrifugal pumps are
designed for the following applications:
• liquid transfer in machine tools
• condensate transfer
• liquid transfer in industrial washing machines
• pressure boosting of cold or hot clean liquids
• similar applications.
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2.2 Pumped liquids

The product is suitable for pumping clean, thin, non-
aggressive and non-explosive liquids without solid
particles or fibres. The liquid must not attack the
pump materials chemically and mechanically.
When pumping liquids with a density and/or viscosity
higher than that of water, use motors with
correspondingly higher outputs, if required.
Whether a pump is suitable for a particular liquid
depends on a number of factors of which the most
important are the chloride content, pH-value,
temperature and content of chemicals and oils.
Aggressive liquids may attack or dissolve
the protective oxide film of the stainless
steel and thus cause corrosion.