Table Of Contents - Danfoss D1 Series Service Manual

Service Manual
D1 High Power Open Circuit Pumps Size 65/130/145/193/260
Contents
Introduction
Operation
Operating parameters
Technical specifications
Fluid and filter maintenance
Pressure measurements
Initial start-up procedures
Troubleshooting
Adjustments
© Danfoss | July 2019
Overview..............................................................................................................................................................................................5
General instructions........................................................................................................................................................................ 5
Remove the unit.......................................................................................................................................................................... 5
Keep it clean..................................................................................................................................................................................5
Replace all O-rings and gaskets............................................................................................................................................. 5
Secure the unit............................................................................................................................................................................. 5
Safety precautions............................................................................................................................................................................5
Unintended Machine Movement..........................................................................................................................................5
Flammable Cleaning Solvents................................................................................................................................................6
Fluid Under Pressure..................................................................................................................................................................6
Personal Safety.............................................................................................................................................................................6
Symbols used in Danfoss literature............................................................................................................................................6
Design...................................................................................................................................................................................................6
Cross-section view........................................................................................................................................................................... 8
NPNN (Pressure Compensated Control).................................................................................................................................. 9
NPSN (Pressure Compensated Control + Load Sensing Control).................................................................................11
NPNR (Pressure Compensated Control + Remote Pressure Compensated Control)............................................ 13
TPSN (Power Control + Pressure Compensated Control + Load Sensing Control)................................................15
NNES (Electric Displacement Control + Load Sensing Control).................................................................................... 17
Solenoid Specification............................................................................................................................................................ 19
Standard EDC Valve................................................................................................................................................................. 20
NNES Priority.............................................................................................................................................................................. 20
TPE2/TPE5 (Power Control + Pressure Compensated Control + Electric Displacement Control).................... 21
TPE2/TPE5 Priority.................................................................................................................................................................... 21
NPE2/NPE0 (Pressure Compensated Control + Electric Displacement Control).....................................................22
Pressure............................................................................................................................................................................................. 23
Speed..................................................................................................................................................................................................23
Fluid.................................................................................................................................................................................................... 23
Viscosity........................................................................................................................................................................................24
Temperature...............................................................................................................................................................................24
Fluid velocity.............................................................................................................................................................................. 24
D1 pump specifications............................................................................................................................................................... 25
D1P fluid specifications................................................................................................................................................................26
Recommendations of fluid and filter maintenance...........................................................................................................27
Port Locations and Gauge Installation (65).......................................................................................................................... 28
Port Locations and Gauge Installation (130/145)...............................................................................................................29
Port Locations and Gauge Instalation (193/260)................................................................................................................ 30
General...............................................................................................................................................................................................31
Start-up Procedure........................................................................................................................................................................ 31
Excessive Noise and /or Vibration............................................................................................................................................32
Low Pump Output Flow...............................................................................................................................................................32
No or Low System Pressure........................................................................................................................................................ 32
Actuator Response is Sluggish.................................................................................................................................................. 33
Pressure or Flow Instability.........................................................................................................................................................33
System Operating Hot..................................................................................................................................................................34
High Inlet Vacuum......................................................................................................................................................................... 34
L1527453 | AX00000292en-CN0201 | 3