PFA NC-201 User Guide by Jennifer Creative

MODEL 201 HYDRAULIC CLAMP

The Model-201 Clamp generates 15,000 of clamping force at 5,000 psi. It is used with dies having slotted underplates, “ears” or “pockets” in line with T-Slots.

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S3003 NC-201 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-201 DWG-201PD 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 201, 201PD, 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-201 | 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 Drawing 201 carefully. Make sure that the die grip height for the various dies are within the dimensions noted on Drawing 201.

4. Study Drawing 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.

pfa-inc.com CAUTION: Use only dies with U slots, “ears” or pockets, i.e., clamping surfaces which support the clamp 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 201).

MODEL-201 | 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 Seal Replacement Procedure, if needed. 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. Review Drawing 201PD. Note position of all components. 2. If seals are to be replaced obtain the two seals, retaining ring and lubricant specified on drawing 201PD. 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 4096 retaining ring. 5. Separate the piston from the housing. Place the clamp housing in a soft jaws fuse and pull the piston out. (Threading a stud into the piston and pulling is acceptable). 6. Remove spring retainer, spring guide and spring as shown in drawing 201PD. 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 Page 2 of drawing 201PD. The seals must be oriented as shown. 11. Carefully insert piston into clamp housing. Be careful to avoid seal damage. 12. Install spring guide, springs and spring retainer as shown in drawing 201PD. 13. Install new retaining ring. 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: 201PD-SEAL Seal Replacement Kit 3. Stud/T-nut assembly

MODEL-201 | HYDRAULIC CLAMP | PAGE 5

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

1. OPERATING PRESSURE: 5000 PSI MAX

2. CLAMPING FORCE: 15,000 LBS @ 5000 PSI

3. USE WITH DIES HAVING 'EARS', 'POCKETS' OR SLOTTED UNDERPLATES.

4. AVAILABLE WITH MECHANICAL LOCK (MODEL-201L).

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.

T-NUT/STUD IS OPTIONAL.

6. CLAMP IS SUPPLIED WITH STUD AND T-NUT. PERMANENT THREAD LOCKING COMPOUND AND STAKING IS USED TO PREVENT THE THE STUD FROM ROTATING IN THE T-NUT. A ONE PIECE FORGED

7 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.

3 SLOTTED UNDERPLATE ILLUSTRATED

JIC 37° FLARE 7/16-20 UNF

GAP 8

BOLSTER

3.12

T-NUT SIZED TO FIT JIC T-SLOT 7

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PAGE 1 OF 1

201 HYDRAULIC NUT REV -

1"-8UNC STUD STANDARD

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 .60 MUST BE SUFFICIENT TO CLOSE THE GAP 8 AND 9 AND PRE-LOAD THE STUD TO 10,000 LBS OF CLAMPING FORCE.

ITEM 201

9 GAP DIE GRIP HEIGHT (SPECIFIED BY CUSTOMER) 7

3.45

10 THIS DIMENSION SHOWS THE AMOUNT OF PISTON TRAVEL WHICH WAS NECESSARY TO PRELOAD THE STUD TO 15,000 LBS CLAMPING FORCE. THIS DIMENSION MUST NOT EXCEED .40 WHEN CLAMP IS FULLY ACTUATED.

T-SLOT WITH T-NUT RESTING ON BOTTOM

PARTIAL VIEW OF CLAMP SHOWN ACTUATED

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.

APPLY MAGNA-LUBE 'G' TO SEALS AND MOVING PARTS WHEN ASSEMBLING.

NOTE SEAL ORIENTATION (CRITICAL) (SEE SHEET 2)

THIS COLUMN SHOWS PARTS INCLUDED IN REFURBISH KIT (PART# 201PD-RFB)

THIS COLUMN SHOWS PARTS INCLUDED IN SEAL KIT (PART# 201PD-SEAL)

THIS COLUMN SHOWS PARTS INCLUDED IN BASIC MODEL-201 CLAMP (REFERENCE ONLY).

PART NO. SERIAL NO.

1.38Ø

.06 (PISTON PROTRUSION AT FULL STROKE)

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

3.45

4 4

QTY SEAL

QTY RFB

1 1 1 1 -

1 1 1 1 1 1 1 -

P PA RT ART # #N S2 NS2 0 01 10 100

3.13Ø

REF

QTY

1 1 1 1 1 1 1 1 1 1 8 8 1

ITEM 201

PAGE 1 OF 2

201PD HYDRAULIC NUT

DESCRIPTION

USERS GUIDE MAGNALUBE, TUBE (NOT SHOWN) LABEL, P/N SERIAL NO. LABEL, PFA (NOT SHOWN) FORGED T-SLOT BOLT, GRADE 8, 1"-8 UNC 201 PISTON, 1.38Ø POLYPAK SEAL POLYPAK SEAL FITTING, STRAIGHT, 1/8 NPT TO 7/16 JIC 201 GUIDE RING RETAINING RING, SPIRAL, 2.75 ID SPRING, COMPRESSION, .465 OD SPRING GUIDE HOUSING, 201 BODY

REV -

ITEM

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

N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com

PART NUMBER

201UG ZZ36120 M201 1075 8391-TAB 4094 NK00017 4098 PI92003 4097 PI92002 1804-1 4095 NK00032 4096 RG00150 3747 3792 4093

1"-8 UNC STUD 3/4-10 UNC STUD OPTIONAL 7/8-14 UNC STUD OPTIONAL

8 REQ'D

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

NOTE ORIENTATION OF SEAL

.62 STROKE

ITEM 201

PAGE 2 OF 2

201PD HYDRAULIC NUT REV N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com

NOTE ORIENTATION OF SEAL

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.

BOLSTER OR RAM

NOTES: UNLESS OTHERWISE SPECIFIED

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

2. HYDRAULIC CHECK VALVE LOCATED AT CONTROL VALVE FOR EACH CIRCUIT.

3. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL.

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.

FLEXIBLE HOSE TO CLAMPS 4 PLACES

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

PAGE 1 OF 3

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HYDRO CIRCUITS DIAGONAL

CLAMPSAFE 1

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

HOSE OR RIGID TUBE

BOLSTER OR RAM

NOTES: UNLESS OTHERWISE SPECIFIED

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

2. HYDRAULIC CHECK VALVE LOCATED AT CONTROL VALVE FOR EACH CIRCUIT.

3. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL.

FLEXIBLE HOSE TO CLAMPS 6 PLACES

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

PAGE 2 OF 3

REV N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com

HYDRO CIRCUITS DIAGONAL

CLAMPSAFE 1

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

HOSE OR RIGID TUBE

BOLSTER OR RAM

NOTES: UNLESS OTHERWISE SPECIFIED

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

2. HYDRAULIC CHECK VALVE LOCATED AT CONTROL VALVE FOR EACH CIRCUIT.

3. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL.

FLEXIBLE HOSE TO CLAMPS 8 PLACES

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

PAGE 3 OF 3

REV N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com

HYDRO CIRCUITS DIAGONAL

CLAMPSAFE 1

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

HOSE OR RIGID TUBE

FLEXIBLE HOSE TO CLAMP.

Model 201

NOTES: UNLESS OTHERWISE SPECIFIED

STUD

P/T

0.25

TO CLAMP

RELEASE

CHECK VALVE P/N 4197-3 C

CIRCUITS

PRESSURE

PFA, INC. Ph: 262-250-4410

HYDRO CIRCUIT W/ CHECK VALVES

1.39

0.43

0.75

PAGE 1 OF 3

CLAMPSAFE 3

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

5,000 PSI HYDRAULIC PRESSURE TO CLAMP (STEEL TUBE OR HOSE)

PILOT CIRCUIT (PC)

CLAMP

1.00

1.50

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

2.25

REV -

N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com

RELEASE

CIRCUITS CHECK VALVE P/N 4197-3 C

PRESSURE

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

Model 201

PRESSURE

FRONT VIEW

DIE SUB-PLATE

TOP VIEW

PFA, INC. Ph: 262-250-4410

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.

TO NEXT CLAMP

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

CIRCUITS

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.

NOTES: UNLESS OTHERWISE SPECIFIED

3. CLAMPS ARE POWERED BY THE CLAMPING CIRCUIT AND OPENED BY THE PILOT CIRCUIT.

4. NOTE THAT CHECK VALVE IS INSTALLED NEAR EACH CLAMP.

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).

TO CLAMP

PRESSURE

PAGE 2 OF 3

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HYDRO CIRCUIT W/ CHECK VALVES

CLAMPSAFE 3

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.

HYDRAULIC POWER AND CONTROL MODULE

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

CLAMPING CIRCUIT

PILOT CIRCUIT

HOSE OR RIGID TUBE

10. MANIFOLD P/N 1068 CAN BE INSTALLED ANYWHERE ALONG THE CLAMPING AND RELEASE CIRCUITS.

RELEASE

PFA, INC. Ph: 262-250-4410

CHECK VALVE P/N 4197-3 C

CIRCUITS

TO CLAMP

PRESSURE

RELEASE

PFA, INC. Ph: 262-250-4410

BOLSTER OR RAM

T-SLOT

CLAMP

CHECK VALVE P/N 4197-3 C

7. IF THIS LINE BREAKS ALL CLAMPS WILL RETAIN CLAMPING PRESSURE. IF INSTALLED, PRESSURE SWITCH WILL STOP PRESS.

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.)

FLEXIBLE HOSES TO EACH CLAMP

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

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

CIRCUITS

RELEASE CHECK VALVE P/N 4197-3 C

TO CLAMP

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

CIRCUITS

RELEASE CHECK VALVE P/N 4197-3 C

TO CLAMP

RELEASE

CHECK VALVE P/N 4197-3 C

CIRCUITS

PRESSURE

PFA, INC. Ph: 262-250-4410

CLAMP RELEASE

TO CLAMP CIRCUIT #1 RETURN

SAME CIRCUITRY AS ILLUSTRATED BELOW

HOSE

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).

12. A PRESSURE SWITCH MODULE IS USED WHEN A PRESSURE SENSOR IS INSTALLED ON EACH CIRCUIT, AS DESIRED.

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.

MODEL 4197-3 C PILOT OPERATED CHECK VALVE

TO OTHER CHECK VALVES PILOT (UNCLAMP) CIRCUIT

TO OTHER CHECK VALVES POWER (CLAMP) CIRCUIT

1/4-20 MOUNTING HOLES

TO CLAMP

HYDRO CIRCUIT W/ CHECK VALVES

PAGE 3 OF 3

CLAMPSAFE 3

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

REV -

12 MODEL-382 PRESSURE SWITCH MODULE

CONDUIT HERE

CIRCUIT #1 (UNCLAMP) FROM POWER & CONTROL MODULE

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

CIRCUIT #2 (UNCLAMP) FROM POWER & CONTROL MODULE

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

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PILOT

POWER

PILOT

POWER

CIRCUIT #1

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

CIRCUIT #2

CIRCUITS

NOTES: UNLESS OTHERWISE SPECIFIED

BOLSTER FRONT VIEW RELEASE

CHECK VALVE P/N 4197-3 C

CIRCUITS

PRESSURE

PFA, INC. Ph: 262-250-4410

TO CLAMP

CLAMPING CIRCUIT TO REAR MOUNTED CLAMPS

DIE SUB-PLATE

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.

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.

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.

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.

5. INSTALLATION EXAMPLE (REFERENCE ONLY) USING SEVERAL BOLSTER MOUNTED CLAMPS. INSTALLATION SCHEMATIC IS PROVIDED WITH USER'S GUIDE.

RELEASE

PRESSURE CHECK VALVE P/N 4197-3 C

RELEASE

CIRCUITS CHECK VALVE P/N 4197-3 C

PRESSURE

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

PFA, INC. Ph: 262-250-4410

TO CLAMP

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

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

P/T

TO CLAMP

RELEASE

CHECK VALVE P/N 4197-3 C

CIRCUITS

PRESSURE

PFA, INC. Ph: 262-250-4410

1.39

0.43

2.25

HOSE CONNECTION TO CLAMPS

ITEM 392

PAGE 1 OF 1

REV -

392/4197-3 C HYDRAULIC CHECK VALVE

PILOT (RELEASE) CIRCUIT CONNECTION

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

0.25

1.00

1.50

0.75

N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com

PILOT CIRCUIT (PC)

CLAMP

1/4-20 SCREW (REF.)

HYDRAULIC POWER AND CONTROL MODULE WITH DOUBLE ACTING VALVE

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

CLAMPING CIRCUIT

PILOT (RELEASE) CIRCUIT

PILOT RELEASE CIRCUIT TO REAR MOUNTED CLAMPS

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