Hypertherm HyPrecision 50S, Operator'S Manual

Page: 83 / 202

HyPrecision 50S/60S/75S Operator Manual 808690 83
5 – Preventive maintenance
Preventive main
tenance
Replace the hydraulic filter
Required parts, tools, and materials
16025 Hydraulic filter (included in the 15569 HyPrecision S-series standard spares kit)
Antiwear (AW) mineral oil or synthetic hydraulic fluid, ISO viscosity grade (VG) 32 or 46
Strap wrench or adjustable pliers
Do this task when the pump is not running.
1. Remove the filter from the filter head.
2. Put clean hydraulic fluid on the gasket on the new filter.
3. Twist the filter onto the filter head.
4. Tighten the filter with a strap wrench or adjustable pliers.
5. Turn ON the pump in cooling mode.
Monitor for leaks. Identify the source of a leak and correct the problem. Refer to
Leaks
on page 163.
6. Check the hydraulic fluid level. Add hydraulic fluid if necessary. Refer to page 78 for instructions.
DANGER
People who maintain and repair this equipment can be injured or killed if hazardous energy is not
properly controlled. Injuries can include burns, cuts, fractures, or electrocution.
Turn off electrical power and relieve all water and hydraulic pressure from the pump before starting
maintenance or repairs.
Disconnect and lock out or tag out the electrical main before opening the electrical enclosure or
doing maintenance or repair procedures. Refer to page 97 for additional information.
DANGER
People who work on deenergized machinery can be seriously injured or killed if someone removes
lock-out or tag-out devices and reenergizes machinery without their knowledge. All workers must
respect lock-out and tag-out devices and that only the person(s) who applied these devices remove
them.
CAUTION
Failure to correct the cause of a leak can cause damage to the water fittings.
Follow local regulations when disposing of used fluids and filters.
Service Interval
Replace the hydraulic filter After every 1,500 hours of operation
WARNING
Do not attempt to repair a leak with pressure in the system.
WARNING
Use a piece of cardboard or other solid material to check for leaks when the pump is on. Do not
use hands, cloth, paper, or towels.