Hilti DX462 Operating Instructions Manual page 11

Fault
Fastener penetrates too deeply
Fastener does not penetrate
deeply enough
Nail bends
Base material is spalling
Damaged nail head
Cause
I Fastener too short
I Driving power too high
I Fastener too long
I Driving power too low
I Hard and/or large aggregate in
concrete
I Rebar close to surface of
concrete
I Hard surface (steel)
I High strength concrete
I Hard and/or large aggregate in
concrete
I Old concrete
I Driving power too high
I Wrong piston used
I Damaged piston
Possible remedies
I Use longer fastener
I Reduce power setting
I Use lighter cartridge
I Use shorter fastener
I Increase power setting
I Use heavier cartridge
I Use shorter nail
I Use thicker nail DNI => AL
I Use stepped shank nail DAK
I Nail application
Use shorter DAK nail
(for high-strength precast
concrete)
I Reduce power setting
I Use lighter cartridge
I Check nail/piston combination
I Change piston
en
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