2014/02
7.Maintenance
13
7.
Maintenance
7.1.
GENERAL CONSIDERATIONS
This pump, just like any other machine, requires maintenance. The instructions in this manual cover the identification
and replacement of spare parts. The instructions are aimed at maintenance personnel and those responsible for the
supply of spare parts.
Carefully read Chapter 8.
51H
Technical Specifications
.
All replaced material should be duly disposed of/recycled according to the directives in force in each area.
ALWAYS disconnect the pump before beginning any maintenance work.
Check the mechanical seal
Periodically check that there are no leaks around the shaft. If leakage is detected through the mechanical seal, replace
it following the instructions in the section Assembly and Disassembly.
7.2.
STORAGE
Before storing the pump it should be completely drained. Prevent as far as possible exposing the parts to excessively
humid environments.
7.3.
CLEANING
The use of aggressive cleaning products such as caustic soda and nitric acid may burn the skin.
Wear rubber gloves during all cleaning procedures.
Always wear protective goggles.
CIP (Clean-in-Place) cleaning
If the pump is installed in a system with a CIP process, its disassembly will not be required.
If an automatic cleaning process is not available, disassemble the pump as indicated in the section
52H
Assembly and
Disassembly
.
Cleaning solutions for CIP processes.
Only use clear water (chlorine-free) to mix with the cleaning agents:
a) Alkaline solution:
1% by weight of caustic soda (NaOH) at 70ºC (150ºF)
1 kg NaOH + 100 litres of water = cleaning solution
or
2.2 litres of 33% NaOH + 100 litres of water = cleaning solution
b) Acid solution:
0.5% by weight of nitric acid (HNO
3
) at 70ºC (150ºF)
0.7 litres of 53% HNO
3
+ 100 litres of water = cleaning solution
