Simran RPU80 instruction manual Installation of pipes

Page 21

Installation

Use the fingers and turn clockwise until a noticeable increase in torque is required.

Tighten further by 30 degrees (= 1/12 of a turn) using necessary force (25-30 Nm/230-260 In.Ibs).

Pumps with new fittings have got new serial no. code and is valid from the following s.no’s; RPU80: s.n. 2460 H06, RPU160: s.n. 1560 H14, RPU300: s.n. 380 H28, RPU300, 24V: s.n. 180 H29

 

Installation of pipes

 

Drain the oil from the steering gear by loosening the rudder

 

cylinder couplings. At a convenient point cut the pipes and

 

mount a T-coupling to each pipe. Cutting ring couplings of an

 

appropriate diameter should be used. Ensure that the pipe is cut

 

at a right angle as otherwise the ultimate tightness of the

 

coupling may be adversely affected. It is preferable to use pipe

 

cutting tool for this operation.

Note !

It is very important to remove ALL traces of metal filings and

 

other impurities from the pipes after cutting.

Figure 4-1

Figure 4-2

Figure 4-3

Figure 4-1, 4-2 and 4-3 show the parts that form a cutting ring coupling. It is important to note which way the cutting ring is fitted, the following procedure should be followed:

a)Nut and cutting ring are slid over the pipe, figure 4-1.

b)A few drops of oil are first applied to the threads of the coupling. The pipe is then inserted fully into the coupling and held whilst the nut is tightened by hand until the cutting ring rests against the cone (figure 4-2).

c)The nut is now tightened 1½ - 2 turns until the cutting ring cuts into the pipe surface (figure 4-3). Ensure that the pipe is held firmly in place whilst the nut is tightened. Release the coupling and check that the cutting ring has successfully cut into the pipe.

20220422N

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Contents Simrad RPU80/160/300 Reversible Pump Copyright 20220422N Document revisions Contents Technical Specifications General Introduction20220422N Bosvik Norwegian RPU160 RPU300 BCS ItalianCapilano, Flexatrol Canadian. See Seastar Harmek Norwegian HC HYDRO-CONTROL GermanLecomble & Schmitt France RPU160 RPU300 HynauticSeipem Italian RPU160 RPU300 Lecomble & Schmitt Old modelsSLEIPNER, Hydrive Norwegian RPU160 RPU300 Servi NorwegianTeleflex See Seastar Tenfjord Norwegian Vetus DutchWagner Canadian RPU160 RPU300 VetusCalculation of cylinder volume Minimum rudder time adjustmentMeasurements and Calculations for Applying the RPU Capacity nomogram for Reversible Pump RPU80/RPU160/RPU300 Construction Description of RPU80/RPU160/RPU300Principle of operation ref. -1 and figure Gear pump Valve blockPressure operated non-return check valves on outlet a and B Suction valves on outlet CPipe connections Mechanical Installation InstallationInstallation of pipes Connection to expansion tank Connection to hand hydraulic steering gear J3000X, J300X, J300X-40, J50, J50-40 AC10, AC20, AC40 Electrical installationPreparation and Testing TestingOil filling and bleeding Maintenance DismantlingElectric motor Pump motor is not running/not responding to rudder command Fault TracingPiston rod does not move with rudder commands Excessive noise from the pump unitPiston rod of the rudder cylinder does not move smoothly Steering wheel is turning while pump unit is operatedSmall and sudden heading changes while on automatic steering Activator reduces the hardening time to 1 hour Rudder moves only in one direction with pump runningSpecifications Technical SpecificationsDimensions RPU80 performance RPU300 performance RPU160 performanceSpare Parts RPU80/RPU160/RPU300Pos Qty Gear pump parts Parts for Fracmo motors Motor parts LemacPos Qty Gear pump parts Previous RPU80 model RPU80 Previous model gear pumpEurope Sales and Service Worldwide