Page 16 - Linde - HMF/A/V/R-02 Hydraulic motors for closed and open loop operation

Functions. Purge and case flushing

Purge and case flushing is used
>> for reducing the temperature of the motor and the system in the open and closed loop circuits
>> for replacing the oil in the circuit
>> to enhance filtration and
>> for removing air from the system
For equipment options for Series 02 motors please refer to the model code.

Purge flow in closed loop circuit

Version Purge valve pressure CBV setting Diagram Purge Flow Diameter of orifice

Standard 10 bar 3 10 l/min 2.5 mm
with 20 bar feed pressure
Standard 14 bar 2 10 l/min without orifice
with 20 bar feed pressure
Restricted 10 bar 3 5 l/min 2 mm
with 20 bar feed pressure
Restricted 14 bar 3 5 l/min 2.5 mm
with 20 bar feed pressure
Increased 10 bar 2 20 l/min without orifice
with 20 bar feed pressure
Flow controlled 14 bar 4 4 l/min with flow regulator
with >20 bar feed pressure

Purge valve 1. Without (0 l/min) Purge valve 2. Standard and increased

Purge valve 3. Restricted Purge valve 4. Flow controlled

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