6.4.2a
6.4.2b
6.4.2c
Page 50
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INDUSTRIAL PUMPS
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Chapter 6 - ROUTINE MAINTENANCE
Translation of original instructions -
S
CUBIC-
S
BOXER
rev.
2021
6.4.2
INTERNAL CLEANING OF THE PRODUCT CIRCUIT
The internal cleaning of the pump must be carried out periodically every 10,000,000 operating cycles to allow
visual inspection and 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
atmosphere, it can even compromise the safety.
CAUTION
: risk of overheating and, in environments with a potentially explosive atmosphere, risk
of fire.
In environments with a potentially explosive atmosphere, the presence of dust can even compro-
mise the safety.
Safety requirements for the operation:
•
Disassembled pump;
•
Pump with the external parts cleaned/washed;
•
Pump with internal product circuit washed, decontaminated and/or stripped (depending on the liquid being
pumped).
•
Pump with product circuit drained of the contaminated washing liquid.
Proceed as follows to clean the inside of the product circuit of the pump:
6.4.2a
Disassemble the suction and delivery manifolds by removing the fastening elements.
CAUTION
: risk of internal back-pressures and projection of components during disassembly.
In abnormal conditions (incorrect installation and/or shutdown and/or standstill conditions), residual pressure,
which is not discharged, may be generated inside the pump. 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).
6.4.2b
Disassemble the fixing screws and remove the pump casings.
6.4.2c
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 com-
patible with the construction materials of the pump and with the work environment.
CAUTION
:
risk of damage and/or fire.
The use of cleaning agents that are incompatible with the pump materials, solvents or flammable sub
-
stances is prohibited.
6.4.2d
Visually inspect the internal surfaces in contact with the product and make sure that there are no abra-
sions, corrosion, cracks and/or damage to the components.
The internal cleaning of the product circuit of the pump is completed.