Hyd-Mech S-20H, Operations & Maintenance Manua

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Pg 21
S22Hna 2002a
TROUBLE SHOOTING GUIDE
PROBLEM
1. Cutting out of square vertically.
2. Cutting out of square horizontally.
3. Head cylinder creeps:
A) in hold
B) in feed position
4. Blade tracking incorrect.
5. Blade stalls in cut.
6. Blade vibrating excessively.
7. Excessive blade breakage
8. No coolant flow.
9. Blade will not start.
10. Machine stops before cut is
completed or runs on after cut is
completed.
11. Head will not descend.
12. No hydraulic functions.
PROBLEM CAUSE
- Carbide guide adjustment incorrect (adjust).
- Feed rate excessive (reduce).
- Blade worn (replace).
- Guide arms too far apart.
- Blade Pitch Incorrect .
- Angle not set correctly(adjust).
- Stock not square in vise. (reset material)
- Angle pointer out of adjustment.
- Stock is not secure in the vise. (reset vise)
- Cylinder seals defective (replace).
- Head valve defective (replace).
- Hydraulic hose leaking.
- Loosen jam nut and adjust pointer with feed rate at zero.
- Improper tension (adjust).
- Tracking needs adjustment.
- Wheel is worn or in poor condition.
- More tension needed.
- Excessive feed rate (reduce).
- Blade pitch incorrect.
- Carbide guides overtightened.
- Blade speed too fast.
- More blade tension needed.
- Guide arms too far apart.
- Feed rate too slow (increase).
- Carbide guides worn or loose (adjust or replace).
NOTE: New blades tend to vibrate until they are “broken in”.
- Excessive blade tension (reduce).
- Excessive feed rate (reduce).
- Top guide(s) damaged (replace).
- No coolant (add).
- Check coolant ports for blockage.
- Line blockage (blow out lineswith compressed air).
- Coolant pump inoperable (replace).
- Coolant pump has lost its prime, loosen screws, sink pump in coolant.
When coolant starts flowing, tighten screws.
- Lift head off limit switch.
- Control fuse blown.
- Push reset button.
- Adjust head down limit switch bolt.
- Feed Rate Valve is fully closed - pointer is set on "0" or close to "0".
- Pointer is not adjusted. Loosen jam nut, turn knob fully closed, tighten
jam nut with pointer at "0".
- Check for physical interference preventing the ference preventing the
head from falling.
- Check that pressure gauge is at a minimum of 400psi. If not, contact
service rep.