1320

Check Physical Coolant Level

Visually inspect the coolant tank reservoir. Normal level should be between MIN and MAX marks on tank sight gauge.

Ensure machine is powered off before opening any coolant system panels

Add Coolant Mixture

Add proper coolant mixture (typically 5-10% concentration) to bring level above minimum mark. Use only Haas-approved coolant or equivalent water-soluble cutting fluid.

Always mix coolant in separate container first, never add concentrate directly to tank

Reset Alarm and Test

Press RESET to clear alarm 1320. Verify coolant pump operation and flow at spindle before resuming machining operations.

Locate Level Sensor

Access coolant tank area and locate the level sensor/float switch assembly, typically mounted on side of reservoir tank.

Lock out electrical power before inspecting sensor connections

Inspect Sensor Operation

Manually lift float switch (if equipped) or check sensor for debris/contamination. Clean sensor probe with mild detergent if contaminated.

Float switches should move freely without binding - replace if movement is restricted

Check Sensor Wiring

Inspect sensor wiring harness for damage, corrosion, or loose connections at sensor and control cabinet terminations.

Test Sensor Continuity

Using multimeter, verify sensor continuity changes when manually actuated. Replace sensor if no continuity change detected.

Inspect for External Leaks

Check around coolant tank, pump, filters, and all visible coolant lines for signs of leakage or coolant stains.

Use flashlight to inspect under machine base and behind electrical cabinet for hidden leaks

Check Spindle Area

Inspect spindle nose and spindle housing for coolant leaks from internal coolant seals. Look for coolant dripping from spindle when not in use.

Pressure Test System

Run coolant pump and observe system pressure. Check all fittings, quick-disconnects, and coolant nozzles for leaks under pressure.

Repair Identified Leaks

Tighten loose fittings, replace damaged coolant lines, or schedule spindle seal replacement if internal leaks detected.

Access Diagnostics Menu

Navigate to SETTINGS > DIAGNOSTICS > INPUTS to view real-time status of coolant level input signal.

Input should show 'ON' when coolant level is adequate and sensor is functioning

Test Input Response

Manually actuate coolant level sensor while observing input status in diagnostics. Input should change state immediately.

Check Input Module

If sensor tests good but input doesn't respond, suspect NGC input module failure. Document input number and contact Haas service.

Inspect Coolant Condition

Check coolant for excessive foam, debris, oil contamination, or foul odor indicating bacterial growth or degradation.

Test Coolant Concentration

Use refractometer to verify coolant concentration is within recommended range (typically 5-10% for water-soluble coolants).

Clean or Replace Coolant

If coolant is contaminated, drain system completely, clean tank, and refill with fresh coolant mixture at proper concentration.

Dispose of used coolant according to local environmental regulations