Cleaning And Hygiene Of The Ldpu; Ldpu For Alimentary Use - OMAC B Series Operation And Maintenance Manual

Rev.4 del 01/2011 O.M.A.C. s.r.l.
aforementioned circuit, to make the components of the lobe displacement pump aseptic.
This necessitates the presence of a steam circuit inside the plant of the Customer.
The dimensions of the inlet and outlet holes joints of the aseptic circuit are listed in the table in section 1.3.9 in chapter 1.
F) COVER AND PUMPING CHAMBER HEATING/COOLING CIRCUIT
The heating / cooling circuit must be connected to the auxiliary circuit of the plant in which the LDPU
is located and must be commissioned by the designated operator before starting the plant concerned
by the process fl uid, in order to adapt (raise, if the intent is to heat or lower, if the intent is to cool
down) the temperature of the components of the B series lobe displacement pump, affected by con-
tact with the process fl uid at the temperature of the same process fl uid.
The dimensions of the inlet and outlet holes joints of the heating / cooling circuit of the cover and
pumping chamber are listed in the table in section 1.3.9 in chapter 1.

3.4 Cleaning and hygiene of the LDPU

Listed below are the methods for cleaning the LDPU according to its operation environment: alimentary with hygiene level 1 or chemical.
ATTENTION
The Customer must also check, through his Technical Offi ce, the compatibility between the C.I.P. liquid and the com-
ponents of the "B series lobe displacement Pump Unit" in close contact (pumping chamber material, seals material,
working temperature, etc.)

3.4.1 LDPU for alimentary use

To ensure hygiene and healthiness of the processed alimentary fl uid, installation and start-up of the "B series lobe displacement Pump Unit" requires
preventive cleaning and sanitisation activities, these activities must take into account the particular features of the processed alimentary fl uid, as well
as reaction times defi ned by the manufacturer of the detergent and sanitising product used and mentioned in the technical sheet. For this reason the
cleaning and sanitisation activities described in this section 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 alimentary fl uid;
• at the end of a work shift;
• when otherwise required by the characteristics of perishable processed alimentary 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. In any case, as required by UNI EN standards for cleaning / sanitising this product, the level of hygiene of the LDPU can be identifi ed
as LEVEL 1, so the activities described below are conducted to restore the same level of hygiene.
Generally the products used for cleaning and sanitising 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 alimentary fl uid);
• sodium hypochlorite based detergents in aqueous solution (5%) (sanitisation of surfaces in contact with alimentary fl uid after a long machine
down time);
• detergents with quaternary ammonium salts in aqueous solution (5%) (sanitisation of surfaces in contact with alimentary fl uid after a long
machine 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.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy
E-mail:info@omacpompe.com SitoWeb:www.omacpompe.com
O.M.A.C. s.r.l.
Tel.0522/629371 - 629923 Fax 0522/628980
If the displacement pump, part of
the LDPU, is supplied in "aseptic"
version, i.e. with front cover and
suction and delivery connection
openings equipped with internal
duct for steam barrier, the Cu-
stomer must connect the water
steam source and relative delive-
ry to the joints of the
Chap.3 - pag.
9