Capacity Loss: Often related to slide valve calibration issues or internal bypass leakage. Safety and Compliance
Piping and Cleanliness: All suction and discharge piping must be thoroughly cleaned. Debris left in the pipes can cause catastrophic damage to the rotors. The manual recommends installing a temporary suction strainer during the commissioning phase.
Shaft Seal Inspection: The mechanical shaft seal is a wear item. Inspect for oil leaks regularly. A minor "weep" is often normal for lubrication, but a steady drip indicates the need for replacement. howden xrv 127 manual
Proper installation is the foundation of compressor reliability. The manual emphasizes several critical steps during the initial setup.
Oil and Filter Changes: Change oil filters whenever the pressure drop exceeds the specified threshold. Periodic oil analysis is recommended to check for acidity, moisture, and metal particles. Capacity Loss: Often related to slide valve calibration
Pre-Start Checks: Before starting the unit, verify oil levels, heater operation, and slide valve positioning. The slide valve should typically be at the minimum capacity position (0%) for a unloaded start.
Discharge temperature (ensuring it stays within safe limits). Oil pressure differential (indicating filter health). Vibration levels (tracking mechanical integrity). Suction and discharge pressures. Maintenance and Troubleshooting A minor "weep" is often normal for lubrication,
Foundation and Alignment: The compressor must be mounted on a level, vibration-free base. Accurate alignment between the compressor and the motor is vital to prevent bearing failure and excessive vibration.
Double-walled casing for noise reduction and thermal stability. Precision-ground rotors for minimal internal leakage. Installation Guidelines