Diaphragm pump N680 EX
Servicing
Translation of Original Operation and Installation Instruction, english, KNF 325438 02/22
31
WARNING
Risk of explosion from formation of potentially ex-
plosive atmosphere
Leaky connections can result in dangerous poten-
tially explosive atmospheres.
à
Make certain that all elastomer parts are un-
damaged, clean and correctly installed.
à
Check the pneumatic connections of the pump
for leaks.
à
Work with care during service work.
à
Replace defective parts immediately.
WARNING
Health hazard due to dangerous substances in the
pump
Depending on the medium being transferred,
caustic burns or poisoning is possible.
à
Wear protective equipment if necessary, e.g.,
protective gloves, goggles.
à
Clean the pump with suitable measures.
CAUTION
Risk of burns from hot pump parts
The pump head or motor may still be hot after op-
eration of the pump.
à
Allow the pump to cool after operation.
For two-headed pumps:
Servicing work should generally be performed on both heads at the
same time.
Spare parts
Spare part*
Item designation**
Quantity
Diaphragm
(17)
1 (per pump head)
O-ring
(10)
2 (per pump head)
O-ring (only .13)
(11)
1 (per pump head)
O-ring (only .13)
(12)
1 (per pump head)
Reed valve, suction
side
(9)
1 (per pump head)
Reed valve, pressure
side
(5)
1 (per pump head)
Slotted cap screw
(2) and (7)
2 (per pump head)
PTFE washer (for ST
head only)
(16)
1 (per pump head)
Tab.20 * According to spare parts list, Chapter 11.1 Spare parts
** According to Individual parts of the pump head
