Janus M30 Axial Piston Motor

PORT CONFIGURATIONS

• All connections are BSPP
• Only use parallel threads with high pressure sealing washers
• Do not use taper fittings

 

2 Port Configuration

Motors are available in 2 port, unidirectional configuration. The P (pressure) inlet and T (tank return) line are clearly marked on the port end cover. Do not connect in reverse order or catastrophic failure will occur.

Unidirectional Motor

Maximum Pressure in the motor return line is 2.5 bar.

3 Port Configuration

All sizes of motor can be supplied for bi-directional rotation. The 3 port design includes an additional case drain port T. By alternating the pressure inlet and return ports, the motor shaft will reverse . Both pressure ports on the 3 port design can accept full system pressure. The motor performance can be adjusted by controlling the flow and pressure of the return flow.

Bi-Directional Motor

Pressure in the return line on a bi-directional motor must be greater than the pressure in the leakage port. The leakage port has a maximum pressure of 2.5 bar.

Geared Motor Assemblies

A standard range of epicyclic gearboxes are available for operation below the recommended minimum speed.

 

Temperature

The units will generate full performance from 2°C to 50°C. For temperatures below freezing, an environmentally friendly antifreeze is available; ask for the Monopropylene Glycol datasheet. Operation above 50°C is possible however, the volumetric efficiency of the unit will be affected. Consult TWHC and specify the maximum operating temperature.

 

Filters

All incoming water to the pumps must be pre-filtered to a nominal rating of 10µm (25µm absolute) with a filter element rating of β10 = 75 or better. Return line filtration is advisable on closed loop systems. High pressure filtration may also be considered but as these are manufactured in stainless steel, we consider this an expensive option.

 

Shaft Loading

Radial and axial loads are not permitted on the motor output shaft; use a flexible gear coupling where possible.

 

Start Torque

The smaller motors (M3 and M6) require a minimum pressure of 25 bar to rotate an unloaded shaft. The larger motors will all start above 12 bar. For applications that must start under full load, the motor must be sized based on their starting torque. A starting

capacity of 60% of the dynamic torque shown in the graphs should be used for calculations

 

Operation

It is advised the motors are operated on a monthly basis to ensure the maximum starting torque is maintained.

 

Over Run

On applications where the motor shaft will continue to rotate once the control valve is closed; over run check valves must be

incorporated. For further information on assemblies, please consult TWHC.

 

ATEX

Atex approved to comply with regulations of Directive 94/9/EC (ATEX) for equipment or protection systems intended for use in potentially explosive atmospheres. Product group, category, zones: II 2GD ck T6 T85°C +1°C≤TA≤+40°C.

 

Fluid

Drinking water quality conforming to the EEC-directive 98/83/EC should be used as standard. Consult TWHC if you are unsure of the water quality. The standard product will operate happily on technical water i.e. distilled, RO water or demineralised. Changes may need to be made to the seal material or construction depending on the operating environment.

The motors also operate on non-flammable fluids such as Glycol 95/5 mixtures; internal clearances must be adjusted when functioning on such fluids. It is imperative the exact operating fluid is specified on all enquiries and orders.

The standard construction will operate on sea water  however, due to the increased corrosion potential of the fluid, a more noble material construction may be required for long term operation.