Maintenance, Calibration, and Servicing Procedures

Routine preventative servicing of the FAAC 620 electro-hydraulic barrier ensures reliable duty-cycle execution across high-throughput commercial and industrial access points. Engineered with an operating use frequency rating of 70%, the hydraulic gerotor pump, drive train, and compression spring mechanism require systematic inspection to prevent mechanical fatigue, irregular travel speeds, and unnecessary thermal tripping at the 120°C internal motor winding cutoff.

Hydraulic Fluid and Pressure Valve Regulation

The barrier mechanism relies on a die-cast distribution flange and an anodised aluminium tank containing FAAC HP mineral hydraulic oil with additives. Fluid levels within the reservoir must be checked during scheduled servicing to verify adequate fluid volume for the 0.75 to 1.0 l/min gerotor pump. Any drop in fluid volume can cause air ingestion, uneven stroke dynamics, or loss of hydraulic locking in the open or closed positions.

Kinematic operating forces are calibrated via separate, independent hydraulic by-pass valves controlling opening force and closing force. Facility technicians must balance these valves to match the site-specific inertia of the boom profile (up to 5.00 m standard rectangular, round, or 4.00 m articulated beams). If by-pass pressures are set too high, the 230 Vac bi-directional motor draws excess current beyond its 1 A rating; if set too low, the barrier will stall prematurely under crosswind conditions.

Mechanical Balancing Spring and Travel Stops

The mechanical assembly utilizes an internal compression spring connected through an equaliser and transmission shaft to counterbalance the boom weight. Improper spring tensioning is the primary cause of speed fluctuations and premature wear on plunger pistons. Balancing must be verified whenever beam accessories—such as bottom skirts or warning lights—are added or modified.

• Internal Mechanical Stops: Inspect and tighten the independently adjustable mechanical travel stops located inside the cataphoresis-treated steel cabinet for both fully open and fully closed barrier positions.
• Deceleration Cams: Check the mechanical travel-limit deceleration cams to verify proper engagement angle before the beam reaches end-of-travel stops.
• Manual Release Mechanism: Lubricate and test the externally accessible manual-release device using the standard triangular key (or customised key) to ensure swift manual declutching during facility power outages.

Electronic Controller Diagnostics and Electrical Safeguards

The integrated 624 BLD microprocessor control board incorporates a programmable 'Assistance request' maintenance cycle counter. Technicians can pre-configure this counter to alert site managers when operational cycle thresholds are attained, triggering structured site inspections. Verify electronic motor power output across its 50 programmable discrete levels, alongside programmed work times (0 to 4 minutes) and pause times.