6.5.3a
6.5.3c
6.5.3h
6.5.3b
6.5.3e
6.5.3d
6.5.3g
6.5.3b
6.5.3f
Page 56 of 68
INDUSTRIAL PUMPS
www.
debem.com
Chapter 6 - Routine Maintenance
Translation of Original Instructions - BOXER rev.
2021
6.5.3
COAXIAL PNEUMATIC EXCHANGER REPLACEMENT for BOXER
All BOXER pumps (with the exception of MICROBOXER pumps) house an orthogonal pneumatic exchanger;
proceed as follows to replace the pneumatic exchanger:
CAUTION
:
risk of contamination, injuries and/or harm to health.
Should the pump be returned to the Manufacturer or to an Authorised Assistance Center, it must first be
emptied of the product or any detergents.
If toxic, noxious or other types of health harming products have been used, the pump must be suitably
treated and washed before it is sent.
Safety requirements for 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 and decontaminated (according to the pumped liquid).
• Pump with product circuit drained of the contaminated washing liquid.
6.5.3a
Disassemble the suction and delivery manifolds by removing the fastening elements.
6.5.3b
Disassemble the fixing screws and remove the pump casings.
6.5.3c
Remove the diaphragm locking cap of both circuits and remove the pump diaphragms.
6.5.3d
Disassemble the coaxial pneumatic exchanger by removing the fastening elements.
6.5.3e
Clean the central and the diaphragms using a disposable clean cloth dampened with a suitable detergent (for the con-
struction material of the pump and the treated product).
CAUTION
: risk of damage and/or fire.
Do not use detergents that are not compatible with the construction materials of the pump, solvents or flam-
mable substances.
6.5.3f
Apply a thin layer of suitable grease (MOLYKOTE
®
) on the holes of the central (bushing hole and shuttle hole).
CAUTION
: danger of pump blocking.
Do not use any type of oil; the oil removes the grease and once discharged, it causes consequent blockage
due to lack of lubrication.
6.5.3g
Replace the exchanger and the connection shaft with an Original Spare Part having the same characteristics (construc-
tion materials of the components).
CAUTION
: risk of malfunctioning and blocking of the pump.
The pneumatic exchanger must not be opened to avoid incorrect reassembly and consequent malfunction of
the pump.
6.5.3h
Reassemble the diaphragms and tighten the relative fixing cap.
The replacement of the coaxial pneumatic exchanger for BOXER pumps is completed.
