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Maintenance and Servicing

Maintenance and Servicing

6

6-3

Replacement PCU Assembly

W

Caution

The piston and cylinder assembly is a matched pair, which is
calibrated and adjusted to a calculated mass figure. If, for any
reason, the piston or cylinder becomes damaged, then the
entire assembly must be replaced. The replacement assembly
consists of the following components: Item numbers
1 through 5.

1

2

3

4

5

6

7

8

gjn014.eps

Figure 6-1. PCU Assembly - 10 mm

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Содержание P3100 Series

Страница 1: ...Fluke Corporation All rights reserved Printed in USA Specifications are subject to change without notice All product names are trademarks of their respective companies P3100 P3200 Series Hydraulic De...

Страница 2: ...vice center to obtain return authorization information then send the product to that service center with a description of the difficulty postage and insurance prepaid FOB Destination Fluke assumes no...

Страница 3: ...quid 1 2 Heavy Weights 1 2 Personal Protective Equipment 1 2 Symbols Used in this Manual 1 2 Operating Principle 1 3 Environmental Corrections 1 5 Gravity 1 5 Temperature 1 5 Head of Fluid 1 6 Model V...

Страница 4: ...6 7 Piston Cleaning 6 7 Piston Re Assembly 6 7 Replacement PCU Assembly 6 8 Top Plate Removal 6 10 Screw Pump Assembly 6 10 Priming Pump Assembly 6 12 Disassembly 6 12 Re Assembly 6 12 Check Valves 6...

Страница 5: ...Contents continued iii Pointer Remover Punch P5551 9 2...

Страница 6: ...P3100 P3200 Series Users Manual iv...

Страница 7: ...t Insert Parts List 2 5 6 1 PCU Assembly 10 mm Parts List 6 4 6 2 PCU Assembly 2 and 3 mm Parts List 6 6 6 3 PCU Assembly 5 mm Parts List 6 9 6 4 Screw Pump Assembly Parts List 6 12 6 5 Priming Pump A...

Страница 8: ...P3100 P3200 Series Users Manual vi...

Страница 9: ...ns 2 3 2 4 Adjust Gauge Position 2 4 2 5 Tighten Gauge 2 4 2 6 Test Port Insert 2 5 4 1 Float Height Indicator Post 4 1 4 2 Weight Rotation 4 2 6 1 PCU Assembly 10 mm 6 3 6 2 PCU Assembly 2 and 3 mm 6...

Страница 10: ...P3100 P3200 Series Users Manual viii...

Страница 11: ...the location of the nearest Fluke distributor or Service Center call Technical Support USA 1 800 99 FLUKE 1 800 993 5853 Calibration Repair USA 1 888 99 FLUKE 1 888 993 5853 Canada 1 800 36 FLUKE 1 8...

Страница 12: ...ear eye protection to prevent injury Heavy Weights Lifting and movement of heavy weights can create an environment of strain and impact hazards Care must be taken during testing to ensure that weight...

Страница 13: ...ise within their cylinders to balance the downward force of the weights Fluids at the same height in a system are at the same pressure so when the system is in equilibrium i e the piston and weights a...

Страница 14: ...1 Hydraulic Circuit Schematic Operating Storage Specification are as follows Temperature and relative humidity ranges for operation and storage of the deadweight tester Table 1 2 Operation and Storag...

Страница 15: ...e International Standard Gravity Gravity at site 981 235 cm s Indicated Pressure 250 psi 250 665 980 235 981 x PRESSURE TRUE psi PRESSURE TRUE 1453 250 The ability to determine the local gravity value...

Страница 16: ...or add respectively the amount stated on the certificate To ensure accuracy is maintained the piston and weights must be kept clean and undamaged The tester is accurate when the piston and weights ar...

Страница 17: ...rmation Model Variations 1 1 7 Models 3112 3113 3114 3115 3116 3213 and 3214 gjn004 bmp Figure 1 3 Single High Pressure PCU Instrument Models 3111 and 3211 gjn005 bmp Figure 1 4 Single Low Pressure PC...

Страница 18: ...P3100 P3200 Series Users Manual 1 8...

Страница 19: ...eventual irreparable damage to the PCUs The impurities found in ordinary water supplies are sufficient to affect the spin and sensitivity of the PCU assemblies and damage the PCUs W Warning The syste...

Страница 20: ...these connections as this will prevent correct sealing The Gauge Adapter sealing system is designed for hand tight sealing up to 20 000 psi 1 400 bar wrenches or similar tools are not required over ti...

Страница 21: ...fficient ensure that the bottom face contacts the O ring on the test port gjn007 bmp Figure 2 2 Making Pressure Connections gjn008 bmp Figure 2 3 Adjusting Pressure Connections 3 To adjust the positio...

Страница 22: ...e O ring gjn010 bmp Figure 2 5 Tighten Gauge Test Port Insert For devices with 1 8 BSP or NPT mounting threads the diameter of the thread is very close to the effective sealing diameter of the O ring...

Страница 23: ...t Table 2 1 Test Port Insert Parts List Item Description Part 1 O RING 3865142 2 TEST PORT INSERT 3919892 3 O RING 3883397 4 TEST PORT 3921414 To calibrate panel mounted gauges with pressure connectio...

Страница 24: ...P3100 P3200 Series Users Manual 2 6...

Страница 25: ...g this operation bubbles may appear in the reservoir as trapped air is expelled For large volumes repeat steps 3 and 4 until no further bubbles appear 5 With valve open turn capstan fully out and clos...

Страница 26: ...P3100 P3200 Series Users Manual 3 2...

Страница 27: ...not be used to generate high pressures 2 Turn the capstan in clockwise to generate pressure When the piston rises ensure that the bottom face of the lowest weight is level with the groove midway in th...

Страница 28: ...stem pressure Note Large sudden changes in pressure will cause the system temperature to rise or fall which can cause instrument readings to change as the fluid in the system expands or contracts thus...

Страница 29: ...at there is a continuous film of water between piston and cylinder Due to the very close fit of these components the water film can break down very quickly after use due to evaporation surface tension...

Страница 30: ...P3100 P3200 Series Users Manual 4 4...

Страница 31: ...a replacement high pressure weight carrier ring These items are simply exchanged for the original items when using the conversion weights Calibration is carried out as described above with logical pre...

Страница 32: ...P3100 P3200 Series Users Manual 5 2...

Страница 33: ...he carrier sharply down onto the cylinder 2 to release the tapered fit between the piston and carrier Remove the weight carrier 2 Unscrew the PCU assembly from the instrument use the dowel hole if the...

Страница 34: ...perating fluid and transfer to the bore in the underside threaded end of the cylinder Allow the fluid to run through the bore Repeat this 2 or 3 times to ensure a good film of clean operating fluid ex...

Страница 35: ...y is a matched pair which is calibrated and adjusted to a calculated mass figure If for any reason the piston or cylinder becomes damaged then the entire assembly must be replaced The replacement asse...

Страница 36: ...tion especially important with Water Operated Testers the piston can be cleaned in a suitable solvent W Caution O ring seals where fitted are Nitrile rubber and should not be immersed in solvents as t...

Страница 37: ...he piston still will not slide freely within the cylinder then permanent damage may have occurred In which case the parts should be returned to the factory for evaluation or replacement 17 Insert pist...

Страница 38: ...6 2 PCU Assembly 2 and 3 mm Parts List Item Description Part Item Description Part 1 Carrier Ring Spec 7 O Ring 3883397 2 Carrier Tube Spec 8 Piston Spec 3 Piston Cap Spec 9 O Ring 3864782 4 Set Scre...

Страница 39: ...of a clean piston with bare fingers the natural oil in your skin can cause the piston and cylinder to stick 8 Wipe excess fluid from the outside surfaces of the cylinder 6 9 Roll a NEW tissue into a t...

Страница 40: ...nt ensuring that the o ring 9 is clean and undamaged and correctly fitted to the piston post 10 19 Replace weight carrier assembly 1 2 ensuring that it locates correctly on the piston cap Replacement...

Страница 41: ...ssembly 5 mm Table 6 3 PCU Assembly 5 mm Parts List Item Description Part Item Description Part 1 Carrier Ring Spec 7 Piston Spec 2 Carrier Tube Spec 8 O Ring 3864782 3 Piston Cap Spec 9 Bearing Ring...

Страница 42: ...the reverse of the above procedure Screw Pump Assembly 1 Unscrew the large union nut just behind the inner hub of the screw press assembly 2 Withdraw the lead screw assembly from the barrel 6 taking c...

Страница 43: ...e barrel 11 Push the lead screw assembly fully in to the barrel ensuring that the key in the nut locates correctly in the slot in the barrel 12 Re tighten the barrel union nut W Caution If the lead sc...

Страница 44: ...bler seal 5 take care not to use any tool that may have a sharp edge that will scratch the surfaces of the groove in the rambler otherwise it may leak when reassembled 9 The replacement rambler seal c...

Страница 45: ...intenance and Servicing 6 6 13 5 Replace locknut 12 and clevis 13 reconnect pump arm assembly and secure with pin clip 6 Reconnect hydraulic tubing 1 2 3 4 5 6 7 8 9 10 11 11 14 12 13 gjn018 eps Figur...

Страница 46: ...pulling on the tubing 2 Unscrew and remove connector 3 Remove check valve assembly 8 4 When replacing the check valve assembly take care to remove all traces of PTFE or Teflon sealing tape on the mati...

Страница 47: ...he feet 2 Place a suitable catchment tray or bowl below the reservoir drain 13 3 Open the valve by turning valve stem 1 counter clockwise 4 Remove gland nut and plug 13 12 and allow the fluid to drop...

Страница 48: ...derside of the top plate 10 The reservoir body 11 and reservoir cap 5 are a close fit to the reservoir tube 7 and both rely on the O ring seal 6 to hold them in place These parts can be separated by g...

Страница 49: ...Maintenance and Servicing Maintenance and Servicing 6 6 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 6 gjn020 eps Figure 6 7 Reservoir Assembly...

Страница 50: ...lve Stem 3886430 9 Washer 3205770 2 Spring 3922786 10 Valve Vent 3921582 3 Nylon Washer 3916458 11 Back Up Ring 3921912 4 Reservoir Cover 3921624 12 O Ring 3865142 5 Reservoir Cap 3921613 13 Reservoir...

Страница 51: ...ffect their performance and possibly damage them If this is the case the system must be completely dismantled thoroughly cleaned and rebuilt before further calibration is carried out PCU Assembly 10 m...

Страница 52: ...fitting a PCU This will cause the piston to fall faster while the air bleeds between the piston and cylinder Continue to re float the piston until the fall rate slows down If the piston continues to...

Страница 53: ...This should be disassembled and inspected for dirt or damage to valve seat and seal After inspection clean all parts carefully replace as required and re assemble correctly 3 If the pump handle rises...

Страница 54: ...P3100 P3200 Series Users Manual 7 4...

Страница 55: ...engaged and secure with toggle clips at the sides Weights 1 Starting with the largest increments first stack all appropriate weights in the wooden weight case 2 Pass the threaded rod of the weight cl...

Страница 56: ...P3100 P3200 Series Users Manual 8 2...

Страница 57: ...ments under test are used on systems that must not be contaminated by the operating fluid from the deadweight tester The unit contains a flexible diaphragm that separates the two working fluids preven...

Страница 58: ...le adapter fits directly onto the test station converting it through 90 degrees allowing the standard adapters to be used gjn022 bmp Figure 9 2 Angle Adapter Pointer Remover Punch P5551 To remove and...

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