Pump Solutions Group PZiG Series - Manual (Page 45)

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Specifications
Consumables and Spare Parts
■Consumables
The recommended replacement cycles are for cases where the pump is operated under constant conditions (room
temperature and clean water). These cycles change according to individual site conditions. Use these cycles as rough
guidelines for replacing consumables. Neglecting to replace consumables may cause defective discharge (injection) or
malfunction.
¡The durability of hoses varies considerably depending on the chemical used, temperature, pressure, and UV rays.
Inspect the piping, and replace it if it has deteriorated.
! CAUTION
Part Name Q'ty Per Unit Recommended Replacement Cycle
Joints
Valve seat
See "Replacing the Valve Seat
and Check Ball" on page 28.
4,000 hours after start of operation or 1 year
Check ball
O-ring
Diaphragm 1
Protective diaphragm 1
* Use whichever arrives first, 4,000 hours after start of operation, or 1 year.
■Spare Parts
• Hose nut
• Retaining ring
• Hose joint
■Options
●Damper
This option reduces pulsation on the discharge-side piping, and lessens piping resistance, allowing the length of the
piping to be extended.
●Signal cable
For 4-pin: 2 m, 5 m For 8-pin: 2 m, 5 m
●Relief valve
The valve automatically releases pressure when excessive pressure occurs in the pump's discharge-side piping due
to clogging by foreign objects or a closed valve.
●Back pressure valve
This valve is used to prevent the "overfeeding"; the phenomenon that causes the flow of liquids at an excessive dis-
charge volume depending on the piping condition.
Spring (high-viscosity
specification only)
05-45_PZiG Series(2)English 06.8.4 9:39 AM y [ W 44