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General| Brand | Bitzer |
|---|---|
| Model | HS.74 series |
| Category | Air Compressor |
| Language | English |
Leakage oil quantities up to 0.05 cm³ per hour are permitted. Gas tightness can be detected by a leak detector.
The relieve valve has a 28 bar response pressure difference. Repeated opening may result in leakage.
A check valve protects against reverse rotation during standstill. Check if damaged if reverse rotation occurs.
During standstill, no oil flow should be visible in the oil sight glass when valves are closed.
Test the oil flow switch function. Compressor should shut off within 5 seconds after oil supply interruption.
Filter intervals depend on system contamination. Initial oil filter change recommended after 50-100 operating hours.
Bearings are fatigue-resistant; replacement generally not needed if operated within limits and normal conditions.
Check elastomer elements for wear by measuring radial distance between marks. Replace if distance exceeds 4 mm.
Regularly check plant operating data including temperatures, pressures, and oil conditions as per regulations.
Check all protection devices and compressor monitoring parts as per relevant operating instructions.
Verify that screwed joints and electrical cable connections are securely fitted and tightened.
Perform checks on refrigerant charge and system tightness to ensure proper operation and safety.
Adhere to specified application limits for compressors as detailed in software or brochures.
Maximum cycling rate is 6-8 starts per hour. Minimum operating time is 5 minutes for compressor longevity.
