85

Check Oil Level Visually

Open electrical cabinet and locate the clear oil reservoir tank. Oil level should be between MIN and MAX marks on the sight gauge.

Ensure machine power is locked out before opening electrical cabinet

Refill with Correct Lubricant

Add Haas-approved Way Oil (typically ISO 68) through the fill port until oil reaches the MAX line. Use only recommended lubricant specified in machine manual.

Keep spare oil on hand and check levels during daily maintenance routine

Prime Lubrication System

Access SETTING 84 (Lube Timer) and manually activate pump using MDI mode M08 command to prime system and verify oil flow to all lubrication points.

Reset Alarm and Test

Press RESET and cycle machine power. Monitor for alarm recurrence during next automatic lubrication cycle.

Check Pump Motor Power

Using multimeter, verify 24VDC at pump motor connector during lubrication cycle. Check fuse F6 in electrical cabinet for pump circuit continuity.

Use proper lockout/tagout procedures when working with electrical components

Test Pump Motor Operation

Manually activate pump using SETTING 84 menu or M08 command. Listen for pump motor operation and check for vibration at pump housing.

A seized pump will draw high current and may trip the circuit protection

Inspect Pump Assembly

Remove pump from reservoir and check for mechanical binding, worn gears, or damaged coupling. Verify pump shaft rotates freely by hand.

Replace Pump Motor

Install new pump assembly using Haas part number from machine manual. Ensure proper electrical connections and mechanical mounting before testing.

Locate Distribution Block

Find the main lubrication distribution manifold, typically mounted near the pump assembly. Check for oil weepage or blockage at distribution ports.

Test Individual Lines

Disconnect oil lines at distribution block one at a time. Activate pump using M08 command and verify oil flow from each port.

Use clear tubing temporarily to visually confirm oil flow and identify air bubbles

Clear Blocked Lines

Use compressed air (max 30 PSI) to blow out blocked lines. For stubborn blockages, use appropriate solvent and flexible wire to clear debris.

Verify Lubrication Points

Check each axis slideway lubrication fitting for proper oil delivery. Clean fittings and verify oil reaches all critical bearing surfaces.

Locate Pressure Switch

Find pressure switch in lubrication circuit, typically mounted on distribution block or pump outlet. Check electrical connections for corrosion or looseness.

Test Switch Operation

Using multimeter, check switch continuity during pump operation. Switch should close when system pressure builds and open when pressure drops.

Verify Pressure Setting

Check pressure switch setting against machine specifications (typically 15-25 PSI). Adjust if necessary using calibrated pressure gauge.

Mark original switch position before adjustment in case rollback is needed

Replace if Defective

Install new pressure switch with identical pressure rating and electrical specifications. Calibrate to proper operating pressure before final testing.

Check Input Status

Access CURRENT COMMANDS screen and verify lubrication input status. Input should show active when pump operates and system pressure is adequate.

Verify Wiring Continuity

Check continuity from pressure switch to NGC control input terminal (typically X-axis connector). Look for damaged wiring or loose connections.

Ensure proper ESD protection when working near control electronics

Test Input Circuit

Temporarily jumper the lubrication input at the control to simulate proper operation. If alarm clears, the input circuit is functional.

Contact Haas Service

If input circuit testing indicates control fault, document findings and contact Haas Factory Outlet for technical support and potential control replacement.