PFA NC-205 Guía del usuario by Jennifer Creative

MODEL 205 HYDRAULIC CLAMP

The Model-205 Clamp generates 8,000 of clamping force at 5,000 psi. It is used with dies having slotted underplates, “ears” or “pockets” in line with T-Slots.

N118 W18251 Bunsen Drive Germantown,WI 53022 (262) 250-4410 • Fax (262) 250-4409

pfa-inc.com Copyright ©2018 PFA, Inc. All rights reserved. Reproduction or use in any manner of editorial or graphic content herein without the express written permission of PFA, Inc. is strictly prohibited. Every effort has been made to ensure the information within this publication is complete and accurate at the time of printing.

S3005 NC-205 REV A - 3/17

TABLE OF CONTENTS 1. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4. Seal Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5. Recommended Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6. Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 DWG-205 DWG-205PD DWG CLAMPSAFE-1 DWG CLAMPSAFE-3 DWG-392

WARNING USE SAFETY GEAR AT ALL TIMES – SYSTEM MAY EJECT HYDRAULIC FLUID AT ANY TIME. Read this complete User Guide and study Drawings 205, 205PD, CLAMPSAFE-1, CLAMPSAFE-3 and-392 before proceeding. Hydraulic plumbing on press/machine depends on the type of clamps used, hydraulic clamping safety employed and other devices, which are connected to the system. Determination of application Safety and Safe Operation is the user’s responsibility.

pfa-inc.com MODEL-205 | HYDRAULIC CLAMP | PAGE 3

INSTALLATION 1. Place T-Nut in T-Slot and make sure that the T-Nut is sized correctly. 2. Verify that the stud length is correct. 3. Rotate the stud so that the proper die grip height is achieved. The stud must be fully engaged in the clamp.

Study DWG-205 attached carefully. Make sure that the die grip height for the various dies are within the dimensions noted on DWG-205.

4. Study DWG CLAMPSAFE-1 and CLAMPSAFE-3. They show how hydraulic circuits can be configured. Select the optimum clamping safety for the application.

Note: Double Acting valves, also known as the“Pilot Circuit” option, are designated by PC in the Pump Module part number. Example: 130S-DL-PC2. The pilot circuit is needed for each zone to release the check for clamp opening, when check valves are used.

5. Place the clamp in the T-Slot and connect hydraulic hose. Note that the hydraulic hose will prevent the clamp from rotating. (If the clamp is rotated then the clamping height is changed). CAUTION: Use a hydraulic pump with a hydraulic pressure sensor to power the clamps. Connect the pressure sensor to press controls to stop the press in the event of hydraulic pressure loss.

OPERATION Note: Integrate the following steps into your die exchange procedure. 1. TO INSTALL DIE. Activate Lift of Die Lifters (if any), Place die in press, and lower die lifters (if any). 2. Move bolster mounted clamps to proper clamping position and activate the proper hydraulic circuit to clamp lower clamps. 3. Make required adjustments and move slide down to upper die. 4. Move ram mounted clamps to proper clamping position and activate the proper hydraulic circuit to clamp upper clamps. 5. Ensure all clamps secure and do not exceed the piston travel for proper clamping preload (Note 10 on clamp drawing). 6. Lock controls to clamps to prevent unclamping. 7. TO REMOVE DIE, move slide to proper down position for die exchange. 8. Unlock controls and release hydraulic pressure to all clamps by turning off hydraulic pressure (valves to release). 9. Move clamps away from die. 10. Jog ram up. 11. Activate die lifters, if any. 12. Perform die exchange.

CAUTION: Use only dies with U slots, “ears” or pockets, i.e., clamping surfaces which support the clamp

pfa-inc.com on opposite sides of the stud. Make sure that the clamp surface thickness/die grip height is within the recommended range/adjustment of the clamp (See Drawing 205).

MODEL-205 | HYDRAULIC CLAMP | PAGE 4

MAINTENANCE 1. Periodically check hoses for signs of wear. 2. Replace hoses if necessary. 3. Examine clamp for damage. 4. Chase any damaged threads if necessary. 5. Check for hydraulic leaks. Tighten fittings or replace hoses as necessary. 6. See enclosed for seal replacement procedures. 7. If a pipe thread fitting is removed, apply new thread tape before reassembling fitting. 8. If stud is replaced, use grade B7 threaded Rod or Forged High Strength Alloy Steel with Minimum Tensile strength 125,000 psi or grade 8 or similar. PFA replacement parts are recommended for proper operation. 9. If T-nut is replaced make sure that it is securely fastened to the stud. Apply permanent thread locking compound IAW manufacturerâ&#x20AC;&#x2122;s recommendations and/or pin T-nut securely in place, if applicable.

SEAL REPLACEMENT PROCEDURE 1. Obtain copy of drawing 205PD, copy attached. Note position of all components. 2. If seals are to be replaced obtain the two seals, retaining ring and lubricant specified on drawing 205PD. 3. If Connector, P/N 1804-1 is removed, apply teflon thread tape before re-installation. Apply proper pipe fitting torque. 4. To disassemble clamp start by removing P/N 2903 nut retainer. 5. Separate the piston from the housing. Place the clamp housing in a soft jaws fuse and pull the piston out. (Thread a stud into the piston and pull the assembly out). 6. Remove spring retainer, spring guide and spring as shown in drawing 205PD. 7. Remove the two seals and discard. 8. Clean parts if required. 9. Apply magna-lube in seal (Oâ&#x20AC;&#x2122;ring) grooves and on the seals. 10. Carefully install seals on piston as shown on Drawing 205PD. The seals must be oriented/ordered as shown. 11. Carefully insert piston into clamp housing. Be careful to avoid seal damage. 12. Install spring as shown in drawing 205PD. 13. Install nut retainer with breakable thread locking compound. Make sure that the retaining ring is fully seated in groove. 14. Apply hydraulic pressure and check for leaks.

RECOMMENDED SPARE PARTS

pfa-inc.com 1. Hoses connected to clamps.

2. P/N 205PD-SEAL Replacement Kit 3. Stud/T-nut assembly

MODEL-205 | HYDRAULIC CLAMP | PAGE 5

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

2.00

JIC 37° FLARE 7/16-20 UNF

PARTIAL VIEW OF CLAMP SHOWN ACTUATED

8 7

3 SLOTTED UNDERPLATE ILLUSTRATED

1.96 9 GAP BOLSTER

DIE GRIP HEIGHT (SPECIFIED BY CUSTOMER) 7

GAP 8

THE T-NUT SHOULD BE SIZED TO MINIMIZE THIS GAP YET ALLOW THE CLAMP TO MOVE FREELY IN THE T-SLOT.

T-SLOT SIZE AND DIE GRIP HEIGHT (PROVIDED BY CUSTOMER) WILL BE CONSIDERED WHEN DETERMINING STUD LENGTH. CHANGE TO A LONGER (GRADE 8) STUD IF DIE GRIP HEIGHT PREVENTS THE STUD FROM FULLY ENGAGING THREADS IN THE CLAMP. REPLACEMENT STUD/T-NUT ASSEMBLIES ARE AVAILABLE FROM PFA, INC. CLAMP IS SUPPLIED WITH STUD AND T-NUT. PERMANENT THREAD LOCKING COMPOUND AND STAKING IS USED TO PREVENT THE STUD FROM ROTATING IN THE T-NUT. A ONE PIECE FORGED T-NUT/STUD IS OPTIONAL AT ADDITIONAL COST.

5. CLAMP IS OPENED BY INTERNAL SPRINGS AND IS ILLUSTRATED IN THE OPEN (UNPOWERED) POSITION. THE STUD SHOULD BE THREADED INTO THE CLAMP SO THAT IT IS AT LEAST FLUSH WITH THE TOP OF THE CLAMP. NOTE THAT THE STUD PROTRUDES SOMEWHAT ABOVE THE CLAMP BODY IN THE ABOVE ILLUSTRATION.

5/8-11UNC STUD STANDARD T-NUT SIZED TO FIT JIC T-SLOT 7

T-SLOT WITH T-NUT RESTING ON BOTTOM

10 THIS DIMENSION SHOWS THE AMOUNT OF PISTON TRAVEL WHICH WAS NECESSARY TO PRELOAD THE STUD TO 8,000 LBS CLAMPING FORCE. THIS DIMENSION MUST NOT EXCEED .15 WHEN CLAMP IS FULLY ACTUATED. 9 ALWAYS KEEP THE GAP BETWEEN THE DIE AND THE CLAMP BODY TO A MINIMUM. (IF NECESSARY REMOVE THE CLAMP FROM THE T-SLOT AND SCREW THE STUD INTO THE CLAMP FOR A CLOSE FIT.) THE CLAMP STROKE WHICH IS .25 MUST BE SUFFICIENT TO CLOSE THE GAP 8 AND 9 AND PRE-LOAD THE STUD TO 8,000 LBS OF CLAMPING FORCE.

4. AVAILABLE WITH MECHANICAL LOCK (MODEL-205L). 3. USE WITH DIES HAVING 'EARS', 'POCKETS' OR SLOTTED UNDERPLATES. 2. CLAMPING FORCE: 8,000 LBS @ 5000 PSI 1. OPERATING PRESSURE: 5000 PSI MAX

205 HYDRAULIC NUT ITEM 205

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

3 4 2 NOTES CONTINUED:

6 7

6. APPLY NEW THREAD TAPE TO ITEM 9 IF IT IS REMOVED FROM CLAMP BODY.

PA P RT ART #N #N S2 S 05 205 10 00

4 10

4 APPLY MAGNA-LUBE 'G' TO SEALS AND MOVING PARTS WHEN ASSEMBLING. 3 THIS COLUMN SHOWS PARTS INCLUDED IN REFURBISH KIT (PART# 205PD-RFB)

1 1 1 1 1 1 1 1 RFB

5. APPLY BREAKABLE THREAD LOCKING COMPOUND TO ITEM 3 WHEN REASSEMBLING CLAMP.

1 1 1 1 1 1 SEAL

1 1 1 1 1 1 1 1 1 1 1 1 1 REF

205UG ZZ36120 2907-2 1075 3833 1804-1 1781-116 PI82116 1781-220 PI82220 1772-116 PI21116 1772-220 PI21220 2882 RG00050 2903 2935 2923 1

PART NUMBER

USER GUIDE MAGNALUBE, TUBE (NOT SHOWN) LABEL, LOCK-UNLOCK (NOT SHOWN) LABEL, PFA (NOT SHOWN) T-NUT/STUD ASSEMBLY 5/8"-11 FITTING, 37° x 1/8 RING, BACKUP RING, BACKUP O-RING O-RING SPRING NUT RETAINER PISTON HOUSING, HYDRAULIC NUT

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ITEM

DESCRIPTION

2 THIS COLUMN SHOWS PARTS INCLUDED IN SEAL KIT (PART# 205PD-SEAL) 1 THIS COLUMN SHOWS PARTS INCLUDED IN BASIC MODEL-205 CLAMP (REFERENCE ONLY).

205PD HYDRAULIC NUT ITEM 205

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the companyâ&#x20AC;&#x2122;s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

FLEXIBLE HOSE TO CLAMPS 4 PLACES

HOSE OR RIGID TUBE

BOLSTER OR RAM

4. ALL PFA QDC APPLICATION AND USE RECOMMENDATIONS ARE ADVISORY ONLY. PRODUCT SELECTION AND USE SHOULD BE IN ACCORDANCE WITH CUSTOMER SAFETY STANDARDS. PROPER FORM, FIT AND FUNCTION ARE THE RESPONSIBILITY OF THE CUSTOMER. 3. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL.

TO HYDRAULIC PUMP CONTROL (HC) WITH TWO CIRCUITS (2 ZONE), CHECKED SUPPLY AND LOW PRESSURE CUTOFF SENSOR/SWITCH EXAMPLE: PFA MODEL HC-120S-PS

2. HYDRAULIC CHECK VALVE LOCATED AT CONTROL VALVE FOR EACH CIRCUIT. 1. CLAMPS POWERED BY INDEPENDENT DIAGONALLY OPPOSITE HYDRAULIC CIRCUITS (ZONES). LOSS OF PRESSURE IN ONE CIRCUIT DOES NOT AFFECT THE OTHERS. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 1 HYDRO CIRCUITS DIAGONAL

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

FLEXIBLE HOSE TO CLAMPS 6 PLACES

HOSE OR RIGID TUBE

BOLSTER OR RAM

TO HYDRAULIC PUMP CONTROL (HC) WITH TWO CIRCUITS (2 ZONE), CHECKED SUPPLY AND LOW PRESSURE CUTOFF SENSOR/SWITCH EXAMPLE: PFA MODEL HC-120S-PS

1. CLAMPS POWERED BY INDEPENDENT DIAGONALLY OPPOSITE HYDRAULIC CIRCUITS (ZONES). LOSS OF PRESSURE IN ONE CIRCUIT DOES NOT AFFECT THE OTHERS. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 1 HYDRO CIRCUITS DIAGONAL

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

FLEXIBLE HOSE TO CLAMPS 8 PLACES

HOSE OR RIGID TUBE

BOLSTER OR RAM

TO HYDRAULIC PUMP CONTROL (HC) WITH TWO CIRCUITS (2 ZONE), CHECKED SUPPLY AND LOW PRESSURE CUTOFF SENSOR/SWITCH EXAMPLE: PFA MODEL HC-120S-PS

CLAMPSAFE 1 HYDRO CIRCUITS DIAGONAL

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

MODEL 392, MODEL-4197-3 C CHECK VALVE ASSEMBLY SCALE 2:1 1/4-20 SCREW

0.75 TOP VIEW 1.50 1.00

0.25

Model 201

0.43

CLAMP

STUD

TO CLAMP

2.25

PFA, INC. Ph: 262-250-4410

DIE SUB-PLATE

P/T

PRESSURE CIRCUITS

1.39

CHECK VALVE P/N 4197-3 C

RELEASE

TO CLAMP

TO NEXT CLAMP

TO CLAMP

PFA, INC. Ph: 262-250-4410

PRESSURE

CIRCUITS

CHECK VALVE P/N 4197-3 C

RELEASE

TO NEXT CLAMP FRONT VIEW

PILOT CIRCUIT (PC) 5,000 PSI HYDRAULIC PRESSURE TO CLAMP (STEEL TUBE OR HOSE) 5,000 PSI HYDRAULIC PILOT CIRCUIT TO OPEN CLAMP (STEEL TUBE OR HOSE)

FLEXIBLE HOSE TO CLAMP.

1 CLAMP SHOWN IN THESE SCHEMATICS IS A MODEL-201 HYDRAULICALLY ACTUATED SPRING RELEASE DESIGN. SCHEMATIC APPLIES TO ALL CLAMPS WITH EXTERNALLY MOUNTED PILOT OPERATED CHECK VALVES. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 3 HYDRO CIRCUIT W/ CHECK VALVES

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

RELEASE

CHECK VALVE P/N 4197-3 C

CIRCUITS

PRESSURE

PRESSURE PFA, INC. Ph: 262-250-4410

PFA, INC. Ph: 262-250-4410

TO CLAMP

FLEXIBLE HOSES TO EACH CLAMP

HOSE OR RIGID TUBE

PILOT CIRCUIT

CLAMP

8 CLAMPING CIRCUIT

T-SLOT

7 BOLSTER OR RAM

10 T-OFF TO CONNECT PRESSURE SENSOR, IF USED. (SEE MORE DATA ON PAGE 3)

TO CLAMP PFA, INC. Ph: 262-250-4410

PRESSURE CIRCUITS

TO CLAMP PFA, INC. Ph: 262-250-4410

PRESSURE CIRCUITS

CHECK VALVE P/N 4197-3 C

RELEASE

HYDRAULIC POWER AND CONTROL MODULE

8. IF THIS LINE BREAKS (PILOT CIRCUIT) IT MUST BE REPAIRED BEFORE CLAMPS CAN BE OPENED. (IN AN EMERGENCY, HOSE FITTINGS AT CLAMPS COULD BE REMOVED TO ALLOW HYDRAULIC FLUID TO ESCAPE AND THE CLAMPS TO OPEN.) 7. IF THIS LINE BREAKS ALL CLAMPS WILL RETAIN CLAMPING PRESSURE. IF INSTALLED, PRESSURE SWITCH WILL STOP PRESS. 6. IF THIS HOSE BREAKS THIS CLAMP WILL OPEN BUT ALL OTHER CLAMPS RETAIN CLAMPING PRESSURE. IF INSTALLED, PRESSURE SWITCH WILL SENSE PRESSURE DROP AND STOP PRESS. 5. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL. PRESSURE SENSOR IS TYPICALLY PROVIDED ON MAIN PRESSURE LINE IN CONTROLLER (PS). PRESSURE SENSORS CAN BE CONNECTED TO INDIVIDUAL CIRCUITS AS DESIRED (SEE PAGE 3).

10. MANIFOLD P/N 1068 CAN BE INSTALLED ANYWHERE ALONG THE CLAMPING AND RELEASE CIRCUITS. 9. ALL PFA QDC APPLICATION AND USE RECOMMENDATIONS ARE ADVISORY ONLY. PRODUCT SELECTION AND USE SHOULD BE IN ACCORDANCE WITH CUSTOMER SAFETY STANDARDS. PROPER FORM, FIT AND FUNCTION ARE THE RESPONSIBILITY OF THE CUSTOMER.

4. NOTE THAT CHECK VALVE IS INSTALLED NEAR EACH CLAMP. 3. CLAMPS ARE POWERED BY THE CLAMPING CIRCUIT AND OPENED BY THE PILOT CIRCUIT. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 3 HYDRO CIRCUIT W/ CHECK VALVES

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

TO CLAMP POWER

HOSE SAME CIRCUITRY AS ILLUSTRATED BELOW 1/4-20 MOUNTING HOLES

TO CLAMP PFA, INC. Ph: 262-250-4410

TO OTHER CHECK VALVES POWER (CLAMP) CIRCUIT

PRESSURE CIRCUITS CHECK VALVE P/N 4197-3 C

TO CLAMP CIRCUIT #1 RETURN

PILOT

POWER

CIRCUIT #2 (CLAMP) FROM POWER & CONTROL MODULE (RAM CLAMPS) CIRCUIT #2 (UNCLAMP) FROM POWER & CONTROL MODULE

CIRCUIT #1 (CLAMP) FROM POWER & CONTROL MODULE (BOLSTER CLAMPS)

RELEASE

TO OTHER CHECK VALVES PILOT (UNCLAMP) CIRCUIT

CLAMP RELEASE

PILOT

CIRCUIT #1 (UNCLAMP) FROM POWER & CONTROL MODULE

MODEL 4197-3 C PILOT OPERATED CHECK VALVE

PRESSURE SWITCH MAY BE WIRED NORMALLY OPEN OR NORMALLY CLOSED. IF A PLC IS USED PLC LOGIC MUST BE PROGRAMMED ACCORDINGLY. THE PRESSURE SWITCH MAY BE SET TO TRIP AT VARIOUS PRESSURES. RECOMMENDED RANGE IS 2500 PSI TO 3500 PSI WHEN SYSTEM IS OPERATED AT 5000 PSI. 12. A PRESSURE SWITCH MODULE IS USED WHEN A PRESSURE SENSOR IS INSTALLED ON EACH CIRCUIT, AS DESIRED. 11. THIS PAGE SHOWS A MODEL 4197-3 C CHECK VALVE INSTALLED WITH A MODEL-201 HYDRAULIC NUT AND OPTIONAL MODEL-382 PRESSURE SWITCH MODULE. TWO SEPARATE CLAMPING AND PILOT CIRCUITS ARE SHOWN (MORE CAN BE ADDED).

CIRCUIT #2

CIRCUIT #1

CONDUIT HERE

12 MODEL-382 PRESSURE SWITCH MODULE

SENSOR SWITCH (TWO) MODULES WITH THREE, FOUR OR GREATER NUMBER OF SENSORS ARE AVAILABLE.

CLAMPSAFE 3 HYDRO CIRCUIT W/ CHECK VALVES

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

UNLESS OTHERWISE SPECIFIED CHECK VALVE IS SUPPLIED WITH FITTINGS AS SHOWN HERE.

CLAMPING CIRCUIT TO REAR MOUNTED CLAMPS

PILOT RELEASE CIRCUIT TO REAR MOUNTED CLAMPS PILOT (RELEASE) CIRCUIT

5 CLAMPING CIRCUIT

DIE SUB-PLATE

TO CLAMP PFA, INC. Ph: 262-250-4410

TO CLAMP

BOLSTER FRONT VIEW

PFA, INC. Ph: 262-250-4410

PRESSURE

CIRCUITS

1/4-20 SCREW (REF.)

TO CLAMP PFA, INC. Ph: 262-250-4410

PRESSURE CIRCUITS

CHECK VALVE P/N 4197-3 C

RELEASE

0.75 MODEL 392, MODEL 4197-3 C CHECK VALVE ASSEMBLY SCALE 3:1

5. INSTALLATION EXAMPLE (REFERENCE ONLY) USING SEVERAL BOLSTER MOUNTED CLAMPS. INSTALLATION SCHEMATIC IS PROVIDED WITH USER'S GUIDE. 4. USE CHECK VALVE IN CONJUNCTION WITH A PRESSURE SWITCH TIED TO PRESS/MACHINE E-STOP TO STOP STAMPING/MOLDING IN THE EVENT OF HYDRAULIC PRESSURE LOSS. 3. IF HYDRAULIC HOSE FROM THE CHECK VALVE TO CLAMP 'A' BREAKS THEN CLAMP 'A' WILL OPEN. OTHER CLAMPS WILL NOT BE AFFECTED. IF THE MAIN HYDRAULIC LINE BETWEEN THE PUMP AND THE CHECK VALVES BREAKS THEN ALL CLAMPS WILL REMAIN CLOSED. 2. A HYDRAULIC PUMP MUST PROVIDE CONTSTANT PRESSURE TO THE CLAMPS WHEN THEY ARE IN USE. (ANY OF THE PFA HYDRAULIC POWER AND CONTROL MODULES MAY BE USED.) THE CHECK VALVE MUST NOT BE USED TO RETAIN HYDRAULIC PRESSURE WITHOUT SUCH HYDRAULIC POWER SOURCE BEING CONNECTED.

HYDRAULIC POWER AND CONTROL MODULE WITH DOUBLE ACTING VALVE

1.50 1.00

HOSE CONNECTION TO CLAMPS

0.25

0.43

CLAMP

P/T

CLAMPING PRESSURE CONNECTION FOR NEXT CHECK VALVE (OR PLUGGED AS APPLICABLE).

TO CLAMP

2.25

PFA, INC. Ph: 262-250-4410

PRESSURE CIRCUITS

1.39

CHECK VALVE P/N 4197-3 C

RELEASE

PILOT CIRCUIT (PC)

PILOT (RELEASE) CIRCUIT CONNECTION

1. USE THE MODEL-392 HYDRAULIC CHECK VALVE TO AUGMENT HYDRAULIC CLAMPING SAFETY IN QDC AND QMC APPLICATIONS. A PILOT CIRCUIT MUST BE PRESSURIZED IN ORDER TO OPEN THE VALVE. THEREFORE, A CLAMP CHECKED BY THE VALVE CAN NOT OPEN UNTIL THE PILOT CIRCUIT ALLOWS FLUID TO ESCAPE TO PUMP RESERVOIR. NOTES: UNLESS OTHERWISE SPECIFIED

392/4197-3 C HYDRAULIC CHECK VALVE ITEM 392

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N118 W18251 Bunsen Drive Germantown,WI 53022 (262) 250-4410 â&#x20AC;¢ Fax (262) 250-4409

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