Service Manifold Manual
Table Of Contents
- Technical Support
- Preface
- Introduction
- About the Hydraulic Service Manifold (HSM)
- 293.32 HSM Component Identification
- HSM Fluid Flow
- HSM Filtering
- HSM Pressure Control
- About HSM Pilot Pressure
- HSM Accumulators
- HSM Slow Turn-On
- HSM Rapid Pressure Reduction
- Model 239.32 HSM Hydraulic Schematic
- Model 293.32 HSM Dimensions
- Model 293.32 HSM Specifications
- Safety
- General Safety Practices: Hydraulic Power Units and Hydraulic Service Manifolds
- Hazard Placard Placement
- Read all manuals
- Locate and read hazard placards/labels
- Specimen Temperature Changes
- Know facility safe procedures
- Know controls
- Have first aid available
- Know potential crush and pinch points
- Be aware of component movement with hydraulics off
- Know electrical hazards
- Keep bystanders safely away
- Wear proper clothing
- Remove flammable fluids
- Check bolt ratings and torques
- Practice good housekeeping
- Protect hoses and cables
- Provide proper hydraulic fluid filtration
- Protect accumulators from moving objects
- Do not exceed the Maximum Supply Pressure
- Do not disable safety devices
- Use appropriately sized fuses
- Provide adequate lighting
- Provide means to access out-of-reach components
- Wear appropriate personal protection
- Handle chemicals safely
- Know system interlocks
- Know system limits
- Do not disturb sensors
- Ensure secure cables
- Stay alert
- Contain small leaks
- Stay clear of moving equipment/avoid crush points
- Know the causes of unexpected actuator motions
- Do not use RF transmitters
- Know compressed gas hazards
- General Safety Practices: Hydraulic Power Units and Hydraulic Service Manifolds
- Installation
- Operation
- Maintenance

About the Hydraulic Service Manifold (HSM)
The hydraulic service manifold (HSM), also called the actuator manifold, is a hydraulic component that
controls hydraulic pressure to one work station. The HSM controls are independent of the hydraulic power
unit’s controls. The basic function of the HSM is to provide line pressure regulation.
An HSM contains ports to provide pilot valve filtration, the use of accumulators, and the use of hydraulic
solenoid valves to control the hydraulic pressure to the work station.
The HSM is available with a control voltage of 24 V DC or 115 V AC.
What You Need to Know
This manual assumes that you know how to use your system controller. See the appropriate manual for
information about performing any controller-related step in this manual’s procedures. You are expected
to know how to:
• Turn the system hydraulic pressure on and off.
• Turn the station hydraulic pressure on and off.
Related Products
Each HSM includes the Series 111 Accumulators; see the Series 111 Accumulators Product Information
manual (MTS part number 011-553-304) for any accumulator maintenance procedures.
16 | Model 293.32 Hydraulic Service Manifold
Introduction