Howden Xrv 127 Manual !!link!! -
Re-align the motor and compressor, check bearing clearances, and ensure proper suction superheat.
Misalignment, worn bearings, or liquid slugging from the suction line.
by altering the discharge port size. This ensures internal compression matches external system pressure, significantly reducing energy loss. Stepless Capacity Control:
Before performing any maintenance or opening the compressor casing: howden xrv 127 manual
Moving the slide valve alters the point at which compression begins, effectively bypassing a portion of the gas back to the suction side without consuming excess energy.
Protects the rolling element bearings and shaft seals.
| | Value / Specification | | :--- | :--- | | Compressor Series | Howden XRV | | Rotor Diameter | 127 mm | | Common Variants | R1, R3, R4, R5 | | Compression Type | Oil-injected, positive displacement rotary screw | | Max Input Speed (RPM) | 3,600 RPM | | Low-Side Max Working Pressure | 5.00 Bar G | | High-Side Max Working Pressure | 21.00 Bar G | | Hydraulic Test Pressure | 37.00 Bar G | | Gear Ratio | 1.353 | | Suction Port Connection | 4 inch | | Discharge Port Connection | 2 inch | | Typical Drive Motor Power | 100 HP (for a packaged unit) | | Adjustable Volume Ratio (Vi) | 2.6:1 to 5.0:1 | Re-align the motor and compressor, check bearing clearances,
A potentiometer or linear transmitter sends a 4-20mA feedback signal to the plant PLC indicating the precise percentage of capacity. Vi Slide Valve Adjusts the location of the discharge port opening.
The Howden XRV 127 is a highly reliable, twin-shaft rotary screw compressor engineered for heavy-duty industrial refrigeration and gas compression applications. Known for its robust build and efficient performance, this compressor series operates continuously under demanding conditions.
An oil-actuated slide valve regulates the effective rotor length. This provides infinitely variable capacity control, usually ranging from 10% to 100% load. 2. Technical Specifications & Operating Limits | | Value / Specification | | :---
The XRV 127 utilizes a hydraulically driven slide valve to adjust capacity and the volume ratio (Vi). How the Slide Valve Works:
Screw compressors are highly sensitive to particulate contamination.
The XRV 127 boasts several features that contribute to its industry standing: