Table of Contents
Advertisement
3.4.2 LDPU for chemical use
To ensure cleaning the process chemical fl uid, LDPU installation and starting requires prior cleaning activity.
The cleaning activities described herein must be carried out in each of the following situations:
•
after the installation of the LDPU;
•
after a long down time of the LDPU;
•
before every change of processed chemical fl uid;
•
at the end of a work shift;
•
when otherwise required by the characteristics of perishable processed chemical fl uid (short machine down times, changes in temperature, etc ....);
•
after routine/extraordinary maintenance.
Once it has been installed in the plant of the Customer, the LDPU becomes an integral part both of the process unit and of the scheduled cleaning system.
Generally the products used for cleaning are of the following types:
•
descaling detergents (cleaning of surfaces in contact with alimentary fl uid after a long machine down time);
•
degreasing detergents (external cleaning, cleaning of surfaces in contact with chemical fl uid);
•
sodium hypochlorite based detergents in aqueous solution (5%) (sanitisation of surfaces in contact with chemical fl uid after a long machine down time);
•
detergents with quaternary ammonium salts in aqueous solution (5%) (sanitisation of surfaces in contact with chemical fl uid after a long ma-
chine down time);
•
please note that the LDPU requires cleaning and sanitising after a long machine down time or routine/extraordinary maintenance, one must
precede these activities by washing with a descaler, to be left to act according to the times indicated by the manufacturer.
Cleaning activities must be carried out by the operators in charge of running the plant in which the LDPU is integrated, therefore they must be read,
understood and carried out carefully by these operators.
Cleaning activities, if manual, must be carried out with the plant switched off and insulated from its energy sources.
ATTENTION
Cleaning activities must be carried out by the operators in charge of running the plant, therefore they must be read, understood and carried out carefully
by these operators.
The cleaning activities that concern the LDPU are divided according to two different contexts:
•
external: DO NOT affect surfaces in contact with chemical fl uid;
•
internal: affect surfaces in contact with chemical fl uid.
Below are the descriptions of the cleaning methods mentioned above.
3.4.2.1 External cleaning instructions
The activities described herein must be carried out with the unit switched off and insulated from its energy sources and are intended to be performed by
the operators responsible for running the plant of which the LDPU is an integral part, therefore they must be read, understood and performed carefully
by these operators.
These cleaning activities are carried out manually, using the instruments needed to enact them, provided by the Customer and indicated below:
•
pressure washer connected to waterworks under pressure;
•
NON aggressive detergent with degreasing surfactants;
•
wear the P.P.E. already provided by the Customer and Manufacturer of the plant in which the LDPU becomes an integral part, PPE that must
take into account what is indicated in the safety sheet of the detergent used.
After having put the detergent in the pressure washer and before going any further, cover the electric control panel, the electric motor and machine wiring,
paying particular attention to the cables input into the shunt/connection boxes, with nylon sheets, fastened securely.
Paying attention to NOT direct the water jet onto parts covered with nylon sheets and indicated above, switch on the pressure washer and proceed with
the cleaning the LDPU, orientating the water jet under pressure only towards the external surfaces of the pump, part of the LDPU, as well as the fi xing
base on which the pump is fi xed.
ATTENTION
DO NOT direct the jet onto parts covered with the nylon sheets such as: electric control panel, electric motor and wiring in the machine.
Pay utmost attention to NOT wet the cables input into the shunt/connection boxes.
3.4.2.2 Internal cleaning instructions
The cleaning and sanitisation activities of the surfaces in contact with alimentary products develops according to the following diagram, following the
indicated frequency:
WASHING
STAGES
STAGE 1
STAGE 2
STAGE 3
STAGE 4
Cleaning the surfaces in contact with the transferred process fl uid articulates further into two different methods, as shown below:
12
Chap.3 - pag.
DETERGENT
AGENT
DESCALING
DEGREASING
SODIUM HYPOCHLORITE
BASE
WATER
Via Giovanni Falcone, 8
42048 Rubiera (RE) - Italy
E-mail:info@omacpompe.com SitoWeb:www.omacpompe.com
WHEN TO USE
FOLLOWING LONG MACHINE DOWN TIME
TO REMOVE RESIDUES OF PROCESS FLUID
IN CONTACT WITH THE PROCESS FLUID
AFTER STAGE 2, TO SANITISE SURFACES
TO ELIMINATE RESIDUES OF DETERGENT
O.M.A.C. s.r.l.
Tel.0522/629371 - 629923 Fax 0522/628980
Rev.4 del 01/2011 O.M.A.C. s.r.l.
PERIODICITY
EVERY 3 MONTHS
ALWAYS
ALWAYS
ALWAYS
Hide quick links:
Advertisement
Table of Contents
