Diamond Products SB - Manual (Page 40)

Rectifying faults SB Wire Sawing System
Page 40 SB_0107_e.mif
Wire "polished" Too high a wire cutting speed
Strong reinforcement or hard aggregates
Too great a contact surface between wire
and building object, or pressing force or
feed too small
Adapt wire cutting speed
Adapt wire cutting speed
Increase feeding force / insert deflection
pulley
Wire has too much wear Too little water in the cut
Strong steel reinforcement
Incorrect wire cutting speed
Align water lance better / increase water
pressure
Rectification not possible
Adapt wire cutting speed
Feed not constant Defective clamping cylinder
Strong steel reinforcement
Replace clamping cylinder
Rectification not possible
Decaying of clamping cylinder when feed
set to zero Retaining valve defective Replace retaining valve
Drive motor has no power Defective drive motor
Drive defective
Check / replace defective motor
Check drive see operating instructions
for drive unit in use
Shaft seal defective on drive motor Plug connectors not correctly connected
Defective drive motor
Check plug connectors and then replace
shaft sealing ring
Replace drive motor
Rim on deflection pulley worn at one
position Deflection pulley bearing defective
Deflection pulley touching chassis and
jamming
Replace bearing and rim
Establish cause and replace defective
part
Play in the deflection pulley bearing Defective bearing / worn ball-bearing Replace ball bearing and seals
Wire vibrates strongly Drive or deflection pulley rims are jam-
ming the wire (worn rims)
Too much tension on wire
Too high a wire cutting speed
Cut carried out with slack side of wire
Replace rims
Reduce feed pressure
Adapt wire cutting speed
Carry out cutting only with tension side.
Only cut with slack side in the event of
poor access to the building object
Straight cut not possible Deformed swivel pulley holder Replace swivel pulley holder
Play in bearing on drive shaft Defective ball bearing Replace ball bearing
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