Watson-Marlow SPS - Manual (Page 29)

MasoSine SPS sinusoidal pumps User Manual 29
17 Cleaning and sterilisation
MasoSine SPS pumps may be cleaned in place. Please follow our CIP cleaning
instructions—see below.
Maintaining a clean process line is vital to maintain a high level of hygiene and no
contamination of an end-product. Contamination costs time and money.
The heat or chemical reaction from clean-in-place (CIP) and steam-in-place (SIP)
cleaning processes damages a living cell’s essential structures, including the cyto-
plasmic membrane, rendering the cell no longer viable.
The process automatically re-circulates cleaning detergent and rinse solutions.
The benefits of clean-in-place (CIP) and steam-in-place (SIP)
l Cleaning is faster
l Cleaning is less labour-intensive
l Cleaning is repeatable
l There is a reduced chance of operators being exposed to hazardous chemicals
Clean-in-place (CIP) for MasoSine products
Clean-in-place (CIP) is a method of cleaning the interior surfaces of pipes, vessels,
process equipment and associated fittings without disassembling.
The CIP procedure
l Before the CIP process begins, a preliminary clean should be performed at
maximum speed with no back pressure. This will remove most of the residual
product.
l Suitable cleaning fluids for the CIP process may include concentrations below
1% of additives. They may be:
l Sodium hydroxide in distilled water
l Nitric acid in distilled water
l Phosphoric acid in distilled water
l CIP cleaning can be carried out between 80°C and 90°C as standard.
l Cleaning should be done at maximum pump speed to achieve a good cleaning
result.
l It is very important that the differential pressure on the discharge side of the
pump is at least 3.0 bar / 43.5 psi higher than the pressure on the suction side
of the pump during the CIP process.
Attention: Keep a minimum distance of 50cm from the pump while
performing high-pressure cleaning.