Page 1

MODEL 661 & 661L POWER STRAP ROCKER CLAMP QUICK DIE CHANGE (QDC)

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.

S3010 RC-661+661L-QDC REV A - 4/18


TABLE OF CONTENTS 1. Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Drawing: 661L Power Strap Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4. Drawing: 661LPD Refurbish and Seal Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5. Operation - Die Exchange Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7. Seal Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8. Spring, Belleville Replacement Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 9. Recommended Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 10. DWG CLAMPSAFE-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 11. DWG CLAMPSAFE-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

pfa-inc.com RC-661+661L-QDC | ROCKER CLAMP | PAGE 2


DESCRIPTION 1. Please refer to drawing 661L and 661LPD. 2. The Model 661 and 661L are adjustable rocker clamps with the piston, Item 4, located at the rear of the clamp and pushing downward on a support plate, Item 14. 3. The mechanical locking ring, Item 5 (661L only), is threaded on the piston, and when screwed tightly against Body, Item 1, retains clamping force when hydraulic pressure is shut off. Model 661 are non-locking and require hydraulic pressure to be maintained at all times. 4. The clamp height adjustment knob, Item 8, is located on top of the clamp and is threaded on the Stud/T-nut Assembly, Item 10. 5. A compression spring, Item 12, located at the front of the clamp pushes against the support plate and keeps the clamp body, Item 1, elevated to the position set by the height adjustment knob. 6. When the height adjustment knob is turned clockwise, the front of the clamp moves downward. 7. When the height adjustment knob is turned counter clockwise, the front of the clamp is elevated until the full upward stroke is achieved. 8. At the full upward position, the stud must remain fully engaged in the height adjustment knob.

Note: When the clamp is adjusted in the full upward position, do not turn the knob any further unless the clamp is being disassembled.

INSTALLATION 1. Make sure that the T-Nut is sized correctly for the bolster T-slot and ram T-slot. 2. Make sure that the clamping height (stud length and spacing plate) is correct for the T-slot neck height . 3. To insert the clamp, compress the compression spring, Item 12, by squeezing the support plate against the clamp body. and insert clamp into the T-slot. 4. Connect hydraulic hose.

pfa-inc.com RC-661+661L-QDC | ROCKER CLAMP | PAGE 3


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

Spacer (in.)

1.00 1.25 1.50 1.75 2.00 2.25 2.50

None 0.25 0.50 0.75 1.00 1.25 1.50

Range (in.) 4.

5.

3/4 - 1 1/4 1 - 1 1/2 1 1/4 - 1 3/4 1 1/2 - 2 1 3/4 - 2 1/4 2 - 2 1/2 2 1/4 - 2 3/4

5.23 MODEL 661L XXXX

CLH (in.)

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.

.64

1.75 MAX

4.

1.25" MAX DIE/MOLD THICKNESS

HEIGHT ADJUSTMENT KNOB SWIVEL FITTING

7. MECHANICAL LOCK 8.

TO OPEN CLAMP REAPPLY HYDRAULIC PRESSURE AND ROTATE THE MECHANICAL LOCK AWAY FROM THE CLAMP BODY; THEN RELEASE HYDRAULIC PRESSURE.

7.

AFTER ACTUATING HYDRAULIC PRESSURE ROTATE MECHANICAL LOCK (HAND TIGHT) UNTIL IT IS FIRMLY IN CONTACT WITH THE CLAMP BODY. THE HYDRAULIC PRESSURE CAN THEN BE SHUT OFF.

6.

5.

TO USE MOVE THE CLAMP TO DIE OR MOLD AND ROTATE THE HEIGHT ADJUSTMENT KNOB UNTIL THE FRONT OF THE CLAMP TOUCHES THE CLAMPING SURFACE. DO NOT CLAMP DIES OR MOLDS WITH A CLAMPING SURFACE LESS THAN ¾” TO ENSURE THAT THE CLAMP IS FULLY PRE-LOADED WHEN HYDRAULIC PRESSURE IS APPLIED.

4.

DO NOT EXCEED 1¼” CLAMPING HEIGHT UNLESS THE THICKNESS OF THE CLAMP SUPPORT PLATE HAS BEEN INCREASED ACCORDINGLY.

3.

MECHANICAL LOCK RETAINS CLAMPING FORCE WITHOUT HYDRAULIC PRESSURE.

2.

CLAMPING FORCE: 3,500 LBS. @ 5000 PSI

1.

OPERATING PRESSURE: 5,000 PSI MAX.

NOTES: UNLESS OTHERWISE SPECIFIED.

6 .75 MAX

4 GAP .75 MIN DIE/MOLD THICKNESS

DIE/ MOLD

5. TOP OF BOLSTER/ PLATEN

4 GAP

5/8" STUD

T-NUT/SLOT SEEN ROTATED 90° FOR CLARITY.

4 UNDERPLATE (1/4" THICK SHOWN) (SPACERS ADDED FOR ADDITIONAL CLAMPING HEIGHT)

MODEL 661 ROCKER CLAMP ITEM 661L

PAGE 1 OF 1

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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 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.

5

25

5 5 6

26

1

1

1

1 2 2 1

1 2

-

2 1

-

-

-

-

-

6

-

2

-

1

27

-

ITEM #17 SWIVEL FITTING ASSY

4

1

1

1 -

1 -

1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1 1 2 6 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

-

-

-

6 APPLY MAGNALUBE TO O'RINGS BACKUP RINGS AND MOVING PARTS WHEN ASSEMBLING.

1

-

-

-

-

-

5 THESE ITEMS ARE PART OF THE SWIVEL FITTING ASSY, (ITEM 17)

-

-

QTY

QTY

4 STAKE IN PLACE.

RFB

3

SEAL

2

QTY

661UG-APP 6145-904-V75 1780-012 1293-012 3613 1712 1075 2020 1620-16 3470 3471 2578 1781-119 6145-119V90 6996 2494 2493 1588 3128-3 1600-18 3139 3256 2491 2489 2488 2487 3482 6873

28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

INSTRUCTION MANUAL O-RING, HIGH TEMP RING, BACKUP O'RING, HIGH TEMP BOTTLE, W/ MAGNALUBE G WASHER, FLAT, .875 ID LABEL, AEROSTAR (NOT SHOWN) LABEL, LOCK-UNLOCK (NOT SHOWN) SCREW, SHC, 10-32UNF X 1.00 LNG SHIM, STEEL SPACER, .50 ID, .75 OD RETAINING RING, THRUST, .56 ID, .43 OD SWIVEL FITTING ASSY BACKUP RING, TEFLON, NON-SPLIT O-RING, HIGH TEMP SUPPORT PLATE, WELDMENT SPRING, COMP., 1.10 OD X 1.03 LNG SPRING, COMP, .353 OD X 2.00 LNG SPRING, BELLEVILLE, .65 ID, 1.14 OD STUD ASSY, TEE NUT, 4.00 LNG ROLL PIN, .25Ø X 1.25 LNG NUT, ADJUSTING, 5/8-11 ALIGN WASHER, .73 ID, 1.25 OD BUSHING, .624 ID LOCKING RING PISTON, .620Ø CUP, SPRING CAP, CYLINDER, BODY, POWER STRAP CLAMP

PART NUMBER

ITEM

DESCRIPTION

1

3 THIS COLUMN SHOWS PARTS INCLUDED IN

REFURBISH KIT (PART# 661PD-RFB)

2 THIS COLUMN SHOWS PARTS INCLUDED IN

SEAL REPLACEMENT KIT (PART# 661PD-SEAL)

1 THIS COLUMN SHOWS PARTS INCLUDED IN

THE BASIC MODEL-661L CLAMP. (REFERENCE ONLY)

POWER STRAP PLASTIC CLAMP ITEM 661LPD

PAGE 1 OF 2

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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 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.

17

8

4

2

7 11

STAKE ALIGNMENT WASHER AND BODY 4 PLCS

6

23 1

20 (6 REQ'D) 5

12 15

3

16 4

13 9

19 (2 REQ'D) SCALE 2:1

18 14 10

POWER STRAP PLASTIC CLAMP ITEM 661LPD

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OPERATION - DIE EXCHANGE SEQUENCE Read the following procedure keeping in mind your company’s specific die exchange procedures. Then integrate the following steps to meet your specific requirements.

Note: For Locking (661L) clamps, hydraulics will need to be reconnected to reclamp, unlock, and release the clamps. PLEASE REFER TO DRAWING 661L AND 661LPD WHEN FOLLOWING THE SEQUENCE BELOW: 1. Jog ram to bottom of stroke and prepare for die removal. 2. For locked hydra-mechanical clamps (661L), connect hydraulics and apply 5000 psi hydraulic pressure to clamps. Press booster button (HM) to boost pressure.

Note: For locked clamps, the pressure used to release the clamps must be equal to or greater than the pressure used to actuate the clamps. 3. For locked clamps (661L), turn Locking Ring, Item #5, away from clamp body. 4. Release hydraulic pressure to unclamp die. 5. Move clamps away from die. 6. Jog ram to full up stroke. 7. Remove die. 8. Place next die on bolster. 9. Make required shut height adjustment and jog ram to bottom of stroke. 10. Move clamps to die and make any required clamping height adjustment using Adjusting Nut, Item 8.

CAUTIONS: • Clamping point must touch die and be engaged fully - at least 1/2” • Limit clamping range as explained on DWG 661L – Power Strap Clamp. • The clamp must be perpendicular to or not more than 30˚ left or right of perpendicular to the die. • The stud, Item 10, must be visible above the surface of the Adjusting Nut, Item 9. 11. Apply 5,000 psi hydraulic pressure to bolster mounted clamps then to ram mounted clamps. 12. For Locking Clamps (661L), set Locking Ring, Item 5, by manually turning it on Piston, Item 4, until the Locking Ring is firmly in contact with clamp body. 13. For Locking Clamps (661L) only, release hydraulic pressure. 14. Examine all clamps for proper position and confirm that all clamps are engaged by attempting to move them manually.

pfa-inc.com 15. Commence stamping when ready.

RC-661+661L-QDC | ROCKER CLAMP | PAGE 7


MAINTENANCE 1. Periodically check hoses for signs of wear. 2. Replace hoses if necessary. 3. Examine clamps for damage. 4. Check mechanical locking rings to make sure that they turn easily. 5. Chase any damaged threads if necessary. 6. Check for hydraulic leaks. Tighten fittings or replace hoses as necessary. 7. Change seals as needed. See enclosed for seal replacement procedures. 8. If a pipe thread fitting is removed, apply new thread tape before reassembling fitting.

pfa-inc.com RC-661+661L-QDC | ROCKER CLAMP | PAGE 8


SEAL REPLACEMENT PROCEDURE CAUTION: WEAR SAFETY GLASSES PLEASE REFER TO DRAWING 661LPD AND DO THE FOLLOWING: 1. Unscrew height adjustment knob, Item 8 from stud assembly to remove Support Plate. 2. Remove Retaining Ring, Item 18, and Shim, Item 19, unscrew mechanical Locking Ring, Item 5. 3. Remove Swivel Joint, Item 17, from Cylinder Cap, Item 2 and disassemble. 4. To disassemble Cylinder Cap, Item 2 from Body, Item 1 remove, SHC Screws, Item 20 (7 places). 5. Remove Piston, Item 4, from Cylinder Cap by pulling on threaded shaft of Piston.

Note: The Locking Knob can be threaded onto the Piston and used as an aid to remove the piston. Note: Ensure all parts have been cleaned prior to assembly. Apply Magnalube-G to O’Rings, Backup Rings and all moving parts prior to assembly. 6. Install O’Rings and Backup Rings onto Piston and Swivel Joint per drawing.

Note: Ensure that the Backup Rings are on the correct side of the O’Rings. 7. Be careful when installing Piston into the Cylinder Cap so as not to damage O’Ring and Backup Ring. 8. Install new Spring, Item 13 and assemble Cap to Body and retain with new screws, Item 20 (7 places). Torque screws to 50 in lbs.

Note: The earlier style clamps with a pipe plug in the back of the body require an O’Ring between the Body and Cap. 9. Screw Locking Ring onto Piston Shaft and install Shims, Item 19 and Item 18, Retaining Ring. 10. Assemble Swivel Joint, Item 17, to Cylinder Cap and Torque to 150 in. lbs. 11. Assemble Spring, Guide and Support Plate. Insert the Stud Assembly through the Support Plate and the Body and Screw Adjustment Knob onto the Stud. 12. Install in T-slot and using a clamp height block to simulate the die clamping plate, carefully apply 5000 psi. Check for leaks and proper operation

pfa-inc.com RC-661+661L-QDC | ROCKER CLAMP | PAGE 9


SPRING, BELLEVILLE REPLACEMENT PROCEDURE 1. Spherical washer, Item 7, is staked to Clamp Body. If replacement is required, break stake and remove alignment washer from body. 2. Below the spherical washer is a belleville spring, Item 11, and

7

a flat washer, Item 23. When replacing these items make sure that they are assembled in the following orientation. 3. Re-stake alignment washer after reassembly.

11 23

RECOMMENDED SPARE PARTS MODEL-661LPD P/N

Description

Contact PFA

T-nut/Stud Assembly

Qty 1

661LPD-RFB

Rebuild Kit

2

661LPD-SEAL

Seal Kit

2

pfa-inc.com RC-661+661L-QDC | ROCKER CLAMP | PAGE 10


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 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.

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.

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.

FLEXIBLE HOSE TO CLAMPS 6 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. 2. HYDRAULIC CHECK VALVE LOCATED AT CONTROL VALVE FOR EACH CIRCUIT.

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.

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.

FLEXIBLE HOSE TO CLAMPS 8 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

PAGE 3 OF 3

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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 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.

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

1

0.75 TOP VIEW 1.50 1.00

2

0.25

1

Model 201

Model 201

0.43

CLAMP

STUD

TO CLAMP

2.25

PFA, INC. Ph: 262-250-4410

DIE SUB-PLATE

P

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

PFA, INC. Ph: 262-250-4410

PRESSURE

PRESSURE

CIRCUITS

CIRCUITS

CHECK VALVE P/N 4197-3 C

CHECK VALVE P/N 4197-3 C

RELEASE

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)

2

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

PAGE 1 OF 3

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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

RELEASE

CHECK VALVE P/N 4197-3 C

CHECK VALVE P/N 4197-3 C

CIRCUITS

CIRCUITS

PRESSURE

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

PFA, INC. Ph: 262-250-4410

TO CLAMP

TO CLAMP

FLEXIBLE HOSES TO EACH CLAMP

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.

HOSE OR RIGID TUBE

6

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

CHECK VALVE P/N 4197-3 C

RELEASE

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

PAGE 2 OF 3

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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 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.

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

PAGE 3 OF 3

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PFA RC-661/661L User Guide  

Model 661 & 661L Power Strap Rocker Clamp Quick Die Change (QDC) by PFA, Inc. of Germantown, WI

PFA RC-661/661L User Guide  

Model 661 & 661L Power Strap Rocker Clamp Quick Die Change (QDC) by PFA, Inc. of Germantown, WI