20
Peristaltic Pumps Series IP 100-800
5. Finally flush with cold water.
5.1.2 Selection of pumping hoses
Peristaltic pumps may be fitted with hoses of
various materials, depending on the application.
The following materials are available:
Colour end code
Natural rubber (NR)
yellow
Natural rubber for food
blue
Hypalon (CSM)
black
Nitrile rubber (NBR)
red
Butyl rubber (IIR)
green
EPDM (EPDM)
white
Before installing a new hose you should make
sure that the hose material suits the intended
application (see compatibility list). If the hose
inside the pump has not been damaged by nor-
mal mechanical wear, but by chemical attack,
you should use a hose of different material.
Some of these functions can be impaired or
may become totally ineffective by excessive
deposits of dirt.
Some advice on how to remove dirt.
• Dried on dirt can be removed by scratching,
scraping or brushing
• Minor dirt deposits, such as layers of dust and
fine deposits can be wiped off, cleaned off
with a vacuum cleaner, removed with a
brush or broom
5.1.1 Cleaning pumps for food applications
(CIP = Clean in place)
The pumps can be cleaned manually after
disassembly or in place (CIP).
Consult the pump supplier for special
application related cleaning procedures.
Do not touch pump or pipes. Dan-
ger or burning!
Always wear your personal
protective outfit when handling
chemicals.
Always flush the system
thoroughly after.
Always observe the applicable
regulations when storing or
dispensing chemicals.
Possible CIP-cleaning procedure for pumping
hoses made of natural rubber.
1. For cleaning the pumping hose the pump
must be flushed with cold water.
2. For product susceptible for sticking or
incrustation we recommend to have cleaning
balls available.
3. Flush the pump with hot water (max. 90
°
C /
195
°
F) for max. 20 minutes (when using a
frequency converter run at slow speed).
4. Clean with an approx. 2.5% alkaline soda
solution.
Caution!
Summary of Contents for ELRO IP 100
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