９
Components
Quantity
Material
Average life
181D
361S
O-rings (P-18)
11
11
Synthetic rubber
(FPM)
10,000h-12,000h
O-rings (P-48)
8
8
Synthetic rubber
(FPM)
10,000h-12,000h
T-joints
2
3
Synthetic rubber
(EPDM)
10,000h-12,000h
Elbows
－
2
Synthetic rubber
(EPDM)
10,000h-12,000h
Straight pipes
2
－
Synthetic rubber
(EPDM)
10,000h-12,000h
Synflex tubes
2
4
Nylon
10,000h-12,000h
Connecting tubes
2
2
Silicon
10,000h-12,000h
Bearings
1 set
1 set
——
About 15000h
Note that the average life for a component varies with the conditions of use.
Always follow 4.1 Cautions for Operation, and remember that life is extended by running
the pump at minimal load (running the pump at minimal load is operation at the achieved
pressure (inlet closed)).
Bearings are replaced by the manufacturer’s service division
<Replacement and Cleaning Guide>
Replace or clean components if performance is reduced or the following symptoms become
apparent.
Inlet filters
: Clean if filter is dirty or has rubbish on it.
Exhaust filters
: Replace if filter is dirty, clogged or hard.
Diaphragms
: Replace if worn, hard or deformed; or if surface has fine
cracks.
Valves
: Replace if deformed, hard or cracked.
O-rings
: Replace if hard, cracked or stretched.
T-joints
: Replace if deformed, hard or cracked.
Elbows
: Replace if deformed, hard or cracked.
Straight pipes
: Replace if deformed, hard or cracked.
Synplex tubes
: Replace if deformed, hard or cracked.
Connecting tubes
: Replace if deformed, hard or cracked.
Bearings
: Contact manufacturer for repair if abnormal noise or
abnormal motor vibration (vibrating noise) is noted.
<Locations for Maintenance and Inspection>
Table 6.2 Locations for Maintenance and Inspection
Period of
operation
Inspection item
Inspection details
Method of
inspection
Every 4.000
hrs
Inlet filters
Dirty or presence of rubbish
Visual inspection
Exhaust filters
Dirty, clogged or hard
Visual inspection
Diaphragms
Deformed, hard, or cracked
Visual inspection
Valves
Deformed, hard or cracked
Visual inspection
