Maintenance Guideline

Preventative Maintenance schedules and procedures for Constant Current Regulators are outlined in FAA Advisory Circular 150/5340-26, Section 5.2. Airport Lighting Company recommends the following lists are used to accompany the procedures detailed in AC 150/5340-26.

Monthly CCR PM Task List

• Complete an exterior visual inspection of the CCR. Look for blockage of the vents on the front door, the top of the enclosure, and the back of the enclosure.
• General housekeeping; wipe down the CCR as needed to prevent dust buildup.
• In Local mode: cycle through the brightness steps and complete a visual inspection of circuit fixtures to ensure correct operation.
• With CCR power disconnected: complete an interior visual inspection. Look for blockages of the vents on the front door, as well as the top and rear of the enclosure.
• If large amounts of dust are present, consider using electronics compressed-gas duster to blow out dust from CCR components. Vacuum / wipe up any dust.
• Complete a visual inspection of airfield circuit terminations and supply feed lines. Look for loose wires, terminal or wire degradation, etc.

Yearly CCR PM Task List 

• Complete an exterior visual inspection of the CCR. Look for blockage of the vents on the front door, the top of the enclosure, and the back of the enclosure.
• General housekeeping; wipe down the CCR as needed to prevent dust buildup. 
• In Local mode: cycle through the brightness steps and complete a visual inspection of circuit fixtures to ensure correct operation.
• Verify the correct calibration of the CCR. Refer to How to Determine if Recalibration is Needed for more information.
• Verify the calibration of the IRMS / Megger, if equipped. To recalibrate, refer to IRMS / Megger Calibration.
• With CCR power disconnected: complete an interior visual inspection. Look for blockages of the vents on the front door, as well as the top and rear of the enclosure.
• Use electronics compressed-gas duster to blow out dust from CCR components. Vacuum / wipe up any dust.
• Complete a thorough inspection of airfield terminations and supply feed lines. Look for loose wires, terminal or wire degradation, etc. Verify that all connections pass a “tug test”, output connection bolts are tight, and connection lugs are tight.

 

Airport Lighting Company | Type L-828, Type L-829 Ferroresonant Constant Current Regulator