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PVA-1GPU Manual 

 

Revision E 

/

 October 2022 

Page 24 of 36 

 

 

 

How to Remove the Ram Seal 

1.

 

Put the 3-position handle in the 

RAM UP

 position. 

2.

 

Lift the ram up all the way.  

 

Figure 23: The Ram Lifted  

3.

 

Use a 4 mm hex key to loosen and remove the bleed valve assembly. You may have 
to hold the bleed valve assembly with an adjustable wrench while you loosen the 
top bolt. 

 

Figure 24: Remove the Bleed Valve Assembly 

4.

 

Use a 6 mm hex key to loosen the six ram bolts.  

 

Figure 25: Loosen the Ram Bolts 

 

Содержание 1GPU

Страница 1: ...PVA 1GPU Owner s Manual Revision E INNOVATION PRECISION EXCELLENCE ...

Страница 2: ...f this document with respect to changes subsequently made Precision Valve and Automation Inc makes no representation or warranty expressed implied or statutory with respect to and assumes no responsibility for the accuracy completeness sufficiency or usefulness of the information contained herein No warranties of merchantability or fitness for purpose shall apply This document including the inform...

Страница 3: ...achine Requirements 11 Main Air Supply 11 Ram Controls 12 Ram Up 12 Ram Down 13 Ram Hold 13 Ram Regulator 14 Pump Operation 15 How to Remove a Pail 15 How to Install a New Pail 18 How to Bleed Air from the Ram 20 Normal Pump Operation 21 System Shutdown Procedure 22 Overnight pump shutdown 22 Long term pump shutdown 22 Maintenance 23 How to Remove the Ram Seal 24 How to Install the Ram Seal 26 How...

Страница 4: ...GPU Manual Revision E October 2022 Page 4 of 36 Shutoff Options 29 Material Level Sensors 30 Recommended Spare Parts 31 Technical Specifications 32 Troubleshooting 33 Table of Figures 34 Notes 35 Warranty 36 ...

Страница 5: ... 371 2684 Fax 1 518 371 2688 Website http www pva net Email info pva net Technical Support Tel 1 844 734 0209 Email cs pva net Document History Revision Revision Date Reason for Changes REV E October 2022 PSI Correction REV D March 2021 1GPU Redesign REV C July 2015 Images Updated REV B May 2015 Ram Design Update REV A June 2013 Initial Release Note All photographs and CAD model representations in...

Страница 6: ...e unit Never put hands or tools in areas with this symbol when the machine is in operation A dangerous condition may exist Read and understand the manuals provided with the unit before any repairs or maintenance is done Only a qualified individual should do service Use caution when there are pressurized vessels Find and repair any leaks immediately Always wear appropriate safety equipment when you...

Страница 7: ...nal injury exist in this equipment or may be associated with its use Only qualified personnel should enter areas designated with this symbol Laser light source present Do not stare directly into the beam Do not use in the presence of highly reflective surfaces Pinch hazard from moving parts Avoid contact Hot surface Avoid contact Warning Ultraviolet UV light hazard Do not look directly at the UV l...

Страница 8: ...r out or break down the integrity of the fillers The PVA 1GPU uses normal shop compressed air to operate and can be integrated with automation equipment Personal Protective Equipment Operators must use eye protection at all times Always wear gloves when handling materials and solvents Refer to MSDS sheets on the material being dispensed for other precautions Waste Disposal Dispose of all used part...

Страница 9: ...PVA 1GPU Manual Revision E October 2022 Page 9 of 36 Pump Overview Figure 1 Pump Overview ...

Страница 10: ...PVA 1GPU Manual Revision E October 2022 Page 10 of 36 Ram Overview Figure 2 Ram Overview Figure 3 Ram Cross Section ...

Страница 11: ...PVA 1GPU Manual Revision E October 2022 Page 11 of 36 Machine Requirements Main Air Supply Supply the system with 70 100 psi of clean dry air It connects at the main air supply Figure 4 Main Air Supply ...

Страница 12: ... Panel Ram Up Put the 3 position hand lever in the RAM UP position to raise the ram out of the pail The rate at which the ram moves up is controlled by the ram up pressure Adjust the ram up pressure with the ram regulator refer to Section Error R eference source not found Figure 6 Ram Up ...

Страница 13: ...e ram down pressure with the ram regulator refer to Section 4 4 Figure 7 Ram Down Ram Hold Put the 3 position hand lever in the RAM HOLD position to keep the ram in the position it is in System pressure is relieved in the RAM HOLD position The RAM HOLD position is used whenever the pump is not in operation or when you want to keep the ram in a position Note You cannot dispense material in the RAM ...

Страница 14: ...and down pressure To adjust the ram pressure 1 Turn the Ram Regulator knob to the necessary pressure position as shown on the Ram Drive Pressure Gauge 2 As you turn the Ram Regulator knob the pressure will change slowly Wait for the pressure to adjust Do not exceed 90 psi 620 kPa Figure 9 Ram Down Regulator ...

Страница 15: ...ion E October 2022 Page 15 of 36 Pump Operation How to Remove a Pail 1 Close the front and rear doors Make sure they are latched Figure 10 Door Latched 2 Put the 3 position hand lever in the RAM UP position Figure 11 Ram Up ...

Страница 16: ...to adjust the ram pressure to a maximum of 80 psi Figure 12 Ram Drive Pressure 80 psi 4 Let the ram lift completely out of the pail clamp The bottom of the ram should be about 1 above the top of the pail clamp 5 Put the 3 position hand lever in the RAM HOLD position Figure 13 Ram Hold ...

Страница 17: ... 3 8 T handle hex key to remove the three machine screws from the pail clamp Figure 14 Remove Screws from Pail Clamp 8 Open the pail clamp Figure 15 Screws Removed Pail Clamp Open 9 Remove the old pail 10 Wipe the ram seal thoroughly and lubricate with mineral oil 11 Install a new pail ...

Страница 18: ...each pail change Refer to Section 6 3 for the procedure It is necessary to replace the ram seal periodically spare seals should be kept on hand Refer to Section 6 1 for the procedure 1 Put a new pail in the pail clamp 2 Turn the pail so that handle protrusions line up with the slot in the pail clamp Figure 16 Pail Handle Slot ...

Страница 19: ...ary to make sure the pail is correctly installed on the base 4 Put the three machine screws in the pail clamp again Figure 17 Install the Screws 5 Tighten the three machine screws with the 3 8 T handle hex key 6 Close the front door 7 Put the 3 position hand lever in the RAM DOWN position Figure 18 Ram Down ...

Страница 20: ...osition hand lever in the RAM HOLD position Refer to Section 5 3 on how to bleed the valve How to Bleed Air from the Ram After a new pail has been installed it is necessary to bleed any air that is in the ram before you begin to dispense 1 Open the front door 2 Turn the front ball valve to the open position Figure 20 Front Ball Valve Open 3 Close the door 4 Put the 3 position hand lever in the RAM...

Страница 21: ...on Figure 21 Front Ball Valve Closed 10 Clean the purge cup and the bleed port as necessary Normal Pump Operation 1 Make sure pail is correctly installed Refer to the procedure in Section 5 2 2 Make sure the front and rear doors are closed and latched Note The pump will not operate if the door is open 3 Make sure all air has been bled from the ram Refer to the procedure in Section 5 3 4 Put the 3 ...

Страница 22: ... Put the 3 position hand lever in the RAM HOLD position 2 Turn the main air shutoff to the Off position Long Term Pump Shutdown 1 Put the 3 postion hand lever in the RAM HOLD position 2 Turn the main air shutoff to the Off position 3 Remove the ram if necessary and clean thoroughly with appropriate solvent ...

Страница 23: ...he machine for leaks and repair as necessary Fill the reservoir with hydraulic oil as specified Figure 22 Hydraulic Oil Level 2 The ram seal should be cleaned and lubricated between each pail change The ram seal will also require periodic replacement so spare seals should be kept on hand Note Be careful not to damage the ram seal when you remove it L o w H I G H ...

Страница 24: ... the ram up all the way Figure 23 The Ram Lifted 3 Use a 4 mm hex key to loosen and remove the bleed valve assembly You may have to hold the bleed valve assembly with an adjustable wrench while you loosen the top bolt Figure 24 Remove the Bleed Valve Assembly 4 Use a 6 mm hex key to loosen the six ram bolts Figure 25 Loosen the Ram Bolts ...

Страница 25: ... ram and the ram seal down off of the upper ram Figure 27 Remove the Ram Seal by Hand 7 Clean the upper and lower Ram 8 Clean and examine the ram seal for damage and wear 9 If the ram seal is damaged or worn replace it Refer to Sections 6 3 and 6 2 to install and lubricate a new ram seal 10 If the ram seal is not damaged refer to Sections 6 3 and 6 2 to install and lubricate a new ram seal ...

Страница 26: ...he Lower Ram 2 Put the ram seal and lower ram on the upper ram Make sure all of the holes align You should be able to see through the bleed valve assembly hole 3 Install the six ram bolts with washers Use a 6mm hex key to tighten them Figure 29 Install the Ram Bolts 4 Clean the bleed valve assembly and make sure the O ring is installed Figure 30 Install the Bleed Valve Assembly O ring ...

Страница 27: ...o the groove in the bottom of the lower ram Figure 31 Install the Bleed Valve Assembly 6 Install the M5x6 bolt with a M5 fender washer into the bleed valve assembly Figure 32 Install Washer and Bolt 7 Use a small adjustable wrench to hold the bleed valve assembly while you tighten the top bolt with a 4mm hex key Figure 33 Tighten the Bleed Valve Assembly Bolt ...

Страница 28: ... October 2022 Page 28 of 36 How to Lubricate the Ram Seal 1 Apply mineral oil to the ram seal 2 Rub the mineral oil into the ram seal with your hand or with a clean lint free towel Figure 34 Rub the Mineral Oil into the Ram Seal ...

Страница 29: ...r more information Shutoff Options The PVA 1GPU comes standard with a manual main air shutoff However an electric solenoid main air shutoff is available as an option This allows a remote machine to control the main air supply to the pump Figure 35 Standard Manual Main Air Shutoff Figure 36 Electric Solenoid Main Air Shutoff ...

Страница 30: ...hich will send an input to a remote machine These sensors show a material Low Level and Empty condition The sensors are available in both PNP and NPN types The sensor type on the PVA 1GPU will depend on the control logic of the remote machine The customer should specify the sensor type with the machine order Figure 37 Electrical Schematic ...

Страница 31: ...cific manual for custom options that may be on your pump as well as a complete machine bill of materials Table 1 Replacement Parts and Accessories Description Part Number Notes Ram Seal 214 12095 O ring seal VLV 018V Hydraulic Oil 1 gal 2158K12 Contact PVA for information on replacement parts or to order ...

Страница 32: ...000 psi 67 bar Maximum hydraulic discharge pressure 4000 psi 275 bar Hydraulic process material pressure ratio 4 1 Fluid outlet size 1 NPT F Wetted Parts Seals Viton Buna N Ram Aluminum stainless steel carbon steel Hydraulic Fluid Mobil DTE25 ISO Grade 46 Machine air supply pressure 70 100 psi 4 8 6 9 bar ...

Страница 33: ... sharp edges replace ram seal if necessary Refer to Section 6 2 for correct ram seal installation instruction Return pail to material manufacturer and replace with pail that is not damaged Hydraulic pump cycles rapidly when system is up to pressure Contamination in the hydraulic pump spool valve Worn seals in the hydraulic pump spool valve Reference attached manual for Haskel 4B series air driven ...

Страница 34: ...Figure 18 Ram Down 19 Figure 19 Front Ball Valve Open 20 Figure 20 Front Ball Valve Closed 21 Figure 21 Hydraulic Oil Level 23 Figure 22 The Ram Lifted 24 Figure 23 Remove the Bleed Valve Assembly 24 Figure 24 Loosen the Ram Bolts 24 Figure 25 Remove the Ram Bolts 25 Figure 26 Remove the Ram Seal by Hand 25 Figure 27 Ram Seal Installed on the Lower Ram 26 Figure 28 Install the Ram Bolts 26 Figure ...

Страница 35: ...PVA 1GPU Manual Revision E October 2022 Page 35 of 36 Notes ...

Страница 36: ...all warranties All PVA warranties extend only to the original purchaser Third party warranty claims will not be honored at any time Prior to returning a product for a warranty claim a return authorization must be obtained from PVA s Technical Support department Authorization will be issued either via the telephone facsimile or in writing upon your request To qualify as a valid warranty claim the d...

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