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Test Operation and
Settings Before Use
After mounting and piping the Knocker, run a test operation and complete the settings in
accordance with the following procedure:
1. Set the air pressure to 44 psi. (14.5 psi at relay piping)
2. Set the most suitable air pressure in the regulated range by increasing the air pressure
of the regulator 5 psi apiece.
Note: The farther the Knocker is from the regulator, the lower the pressure at the Knocker compared to the
pressure indicated at the regulator. In such a configuration, set the pressure slightly higher.
Inspection
Inspect the following items at least once every three months to minimize trouble during operation:
1. Are any nuts or bolts loose?
2. Are any welded parts cracked?
3. Have any contaminants gotten into the Knocker?
4. Is there any abnormal wear on the cylinders or pistons?
5. Is there any spring damage?
6. Is there any damage to safety wire assembly?
Replacement Period
For Consumables
Replace consumables as set out in the following table:
Note: Contact the branch, sales office or designated service center closest to you for repair or overhauling of the Knocker
Part
How to determine the replacement period
from visual and audible signs
Replacement
Period
(Average)
Mushroom
Valve
Determine according to the amount of wear,
scratches and cracks (visual)
1,000,000
Strokes
Piston
Determine according to the amount of wear (visual)
1,000,000
Strokes
Spring
Determine according to the amount of wear
and operation conditions (Visual and audible)
1,000,000
Strokes
Spring
Determine according to the amount of wear
and operation conditions (Visual and audible)
1,000,000
Strokes
Impact plate
(KNR-15-SS)
Judge in the wear condition of the tip part (visual)
500,000
strokes