6.4.2a
6.4.2b
6.4.2c
of
INDUSTRIAL PUMPS
www.debem.com
rev
INTERNAL CLEANING OF THE PRODUCT CIRCUIT
The pump must be internally cleaned periodically every 20.000.000 cycles of operation to allow visual inspec-
tions and a safe use of the pump. The presence of dust and/or deposits on the external surfaces of the
pump can negatively affect process temperatures. In environments with a potentially explosive atmo-
sphere, it can even compromise the safety.
CAUTION: risk of overheating and, in environments with a potentially explosive
atmosphere, risk of re. In environments with a potentially explosive atmosphere, the presence of dust
can even compromise the safety.
Safety requirements for the operation:
• Disassembled pump;
• Pump with the external parts cleaned/washed;
• Pump with internal product circuit washed and decontaminated (according to the pumped liquid).
• Pump with product circuit drained of the contaminated washing liquid.
Proceed as follows to clean the inside of the product circuit of the pump:
Disassemble the suction and delivery manifolds by removing the fastening elements.
CAUTION: risk of internal back-pressures and projection of components during disassembly.
In severe conditions (incorrect installations and/or stops and/or in stall conditions), residual pressures inside
the pump can be generated which are not discharged. Before opening and disassembling the pump, it is
necessary to secure the pump casings with a suitable ratchet strap and wear suitable Personal Protective
Equipment (PPE).
Disassemble the xing screws and remove the pump casings.
Check for solid deposits inside the pump and, if present, remove them and clean the internal surfaces of the pump
using a disposable cloth dampened with detergent (suitable for the treated product) and compatible with
the construction materials of the pump and with the work environment.
CAUTION: risk of damage and/or re.
Do not use detergents that are not compatible with the construction materials of the pump, solvents or
ammable substances.
Visually inspect the internal surfaces in contact with the product and make sure that there are no abrasions, cor-
rosion, cracks and/or damages to the components.
The internal cleaning of the product circuit of the pump is completed.
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