MTS Hydraulic Power Unit Model 506-92 - Manual (Page 3)

Table of Contents i
Table of Contents
Section 1 Introduction
1.1 Functional Description............................................................................. 1-2
1.2 Specifications........................................................................................... 1-3
Section 2 Operation
2.1 Controls and Indicators............................................................................ 2-1
2.2 Operation Procedures .............................................................................. 2-3
2.3 Supercharge Pump Operation .................................................................. 2-5
Section 3 Service
3.1 Maintenance Procedures.......................................................................... 3-1
3.1.1 Filters ................................................................................................ 3-2
3.1.1.1 High-Pressure Filter Replacement ................................................ 3-3
3.1.1.2 Low-Pressure Filter Replacement ................................................. 3-4
3.1.2 Hydraulic Fluid ................................................................................. 3-5
3.1.3 Accumulators .................................................................................... 3-7
3.1.3.1 Precharge Pressure-Checking Intervals......................................... 3-7
3.1.3.2 Precharging the Accumulators ..................................................... 3-8
3.1.3.3 Changing the Accumulator Seals.................................................. 3-8
3.2 Service Adjustments................................................................................. 3-9
3.2.1 Adjusting the Output Pressure........................................................... 3-10
3.2.2 Dual-Temperature Switch Adjustments .............................................. 3-12
3.2.3 Low-Level Switch Adjustment........................................................... 3-13
3.2.4 Main Pump Low-Inlet Pressure Switch Adjustment ........................... 3-14
3.3 Starter Assembly..................................................................................... 3-15
3.3.1 Abnormal HPS Shutdown................................................................. 3-16
3.3.2 Fuse Replacement ............................................................................. 3-16
3.3.3 PLC Service ...................................................................................... 3-17
Section 4 Installation
4.1 Hydraulic Connections............................................................................ 4-2
4.2 Electrical Connections.............................................................................. 4-3
4.2.1 Transformer Wiring ........................................................................... 4-4
4.2.2 Input Power ...................................................................................... 4-5
4.3 Cooling Water Connections ..................................................................... 4-6