6.4.3d
6.4.3a
6.4.3c
Page 51
of
68
INDUSTRIAL PUMPS
www
.debem.com
Chapter 6 - ROUTINE MAINTENANCE
Translation of original instructions - S
CUBIC -
S
BOXER
rev
. 2021
6.4.3b
6.4.3
CHECK AND/OR REPLACEMENT OF VALVES (Suction and Delivery)
The suction and delivery valves (ball and ball seats) are components subject to wear. Their duration is strongly
affected by the conditions of use and by the chemical and physical stresses. The suction and delivery valves
must be periodically checked every 10,000,000 cycles of operation, to ensure correct operation of the product
seals and the best performance of the pump.
Safety requirements before starting the operation:
•
Pump removed from the workstation and residual pressure inside the air circuit discharged;
•
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 check and/or replace the pump valves:
6.4.3a
Disassemble the suction and delivery manifolds by removing the fastening elements.
6.4.3b
Remove the seats and balls of the suction and discharge valves and clean them with a cloth dampened
with a suitable detergent, and/or replace them with Original Spare Parts of the same type and material
(see Spare Parts Manual - BOXER and CUBIC)
.
CAUTION
:
risk of damage and/or fire.
Do not use detergents that are not compatible with the construction materials of the pump, solvents or
flammable substances.
6.4.3c
Check the condition of the gaskets and, if necessary, replace them with Original Spare Parts of the same
type and material
(see Spare Parts Manual - BOXER and CUBIC)
.
6.4.3d
Check that there are no solid deposits inside the vales, otherwise remove them with a disposable clean
cloth dampened with detergent (suitable for the treated product).
The check and/or replacement of the pump valves is completed.