Hypertherm HPR260 Manual Gas Preventive Maintenance Program Rev.5 - Manual (Page 200)

5-56 HPR260 Auto Gas Instruction Manual
Gas flows – continued
Ȟ P Ȟ NP 16. Perform gas leak tests
A. Oxygen pressure drop at ____________
psi in 10 minutes ( ____________ bar)
B. Nitrogen pressure drop at ____________
psi in 10 minutes ( ____________ bar)
Ȟ P Ȟ NP 17. Inspect for hose restrictions
Ȟ P Ȟ NP A. Metering console hoses
Ȟ P Ȟ NP B. Selection console to Metering
console
Ȟ P Ȟ NP C. Metering console to torch
Ȟ P Ȟ NP D. Hoses in power track
Cable connections
Ȟ P Ȟ NP 18. Inspect cables
Ȟ P Ȟ NP A. CommandTHC
Ȟ P Ȟ NP B. Control cable from metering
console to selection console
Ȟ P Ȟ NP C. From metering console to
power supply
Ȟ P Ȟ NP D. From ignition console and
selection console to power supply
Ignition console
Ȟ P Ȟ NP 19. Inspect for moisture, dust and
particulates
Ȟ P Ȟ NP 20. Inspect spark gap subassembly
Ȟ P Ȟ NP 21. Inspect torch leads
System grounding
Ȟ P Ȟ NP 22. Inspect for proper system component
grounding
Ȟ P Ȟ NP 23. Inspect connection from cutting
table to workpiece (+) lead
Power supply
Ȟ P Ȟ NP 1. Inspect for particulates and blow out
Ȟ P Ȟ NP 2. Inspect wiring harnesses
Ȟ P Ȟ NP 3. Inspect main contactor
Ȟ P Ȟ NP 4. Inspect pilot arc relay
Coolant system
Ȟ P Ȟ NP 5. Inspect filter element
Ȟ P Ȟ NP 6. Perform coolant flow tes t
A. Coolant flow checked at _________
gallons per minute ( _________ l/min)
Torch main body
Ȟ P Ȟ NP 7. Inspect water tube
Ȟ P Ȟ NP 8. Inspect current ring
Ȟ P Ȟ NP 9. Clean threads on torch front end
Ȟ P Ȟ NP 10. Inspect Vespel torch insulator
Ȟ P Ȟ NP 11. Inspect torch and consumable o-rings
Ȟ P Ȟ NP 12. Verify proper fit of retaining or shield cap
Ȟ P Ȟ NP 13. Inspect hose fittings
Ȟ P Ȟ NP 14. Inspect torch-to-torch-lead connections
Gas flows
Ȟ P Ȟ NP 15. Inspect plumbing from gas supply
Ȟ P Ȟ NP A. Oxygen
Ȟ P Ȟ NP B. Nitrogen
Ȟ P Ȟ NP C. Air
Ȟ P Ȟ NP D. Nitrogen-Hydrogen
Ȟ P Ȟ NP E. Argon-Hydrogen
Ȟ P Ȟ NP F. Inspect compressed air filter system
Preventive Maintenance Protocol Checklist
Customer:
Location:
Contact:
Date:
Hypertherm system:
System serial #:
System arc hours:
(if equipped with an hour meter)
Comments
P – Performed NP – Not present on system
Preventive maintenance performed by: Date:
General comments and recommendations: