Moog RKP-II - Manual (Page 44)

Connecting Pipes 6 Mounting
36 User Manual RKP-II (CA53461-001; Version 2, January 2010) © 2010 Moog GmbH
• Avoid sharp angles and screwed pipe joints (danger of air intake and
dispersion, high flow resistance). Use curved pipes or hoses instead.
• Maintain the minimum inlet pressure.
• Only reduce the length of the suction line at the pump entry.
• If a suction filter (min. 0.15 mm mesh aperture) or a shut-off valve is used,
install the devices below the fluid level.
Pressure Line
• Ensure sufficient stability.
• Inspect the tightening torques of the screws.
Drain Line
• Install the drain line so that the pump housing is always completely filled
with pressure fluid (use the upper connection).
• It should lead directly into the tank separated from the other return lines.
• The end of the line must be below the fluid line in the tank, even at the
lowest fluid level.
• The distance from the suction line should be as large as possible. Do not
place a filter, cooler or non-return valve in the drain line. Max. length 3 m.
• Pressure at the drain line max. 2 bar absolute (1 bar above atmosphere).
• The recommended outside diameter of the pipe used as a drain line
(lightweight version): Ö Tab. 3, Page 27
6.4 Connecting Pipes
Connecting Pipes
Procedure:
1. Remove the end caps from each connection.
2. Clean the sealing surfaces and the lines.
3. Connect the lines in accordance with the block diagram (suction line A,
pressure line B). Ö Chap. "12.2 Tightening Torque", Page 63
4. For pumps with load sensing compensator with p-T control notch
- The compensator's tank line may not be combined with the pump's
leak oil line.
5. For multiple pump arrangements, which are equipped with the "load
sensing compensator with p-T control notch", in the event that a circular
flow is required:
- Only connect the tank line to the tank at the compensator of the first
pump to activate the p-T control notch.
- Close off the compensators' t-connections for the add-on pumps.
For the pump, the connections do not depend on the direction of the
rotation.
For securing the control and leak oil port and the suction and pressure
flange, the appropriate screw connections must be used.