PFA RC-425/425L User Guide

DESCRIPTION

1. Please refer to drawings 425L/425PD and 425L/425LPD.

2. The Model 425 and 425L are adjustable rocker clamps with the piston, Item 3, located at the rear of the clamp and pushing upward on clamp lid, Item 2

3. The mechanical lock screw, Item 20 (425L only), is threaded into the lid. When screwed tightly against the base plate, Item 1, it retains clamping force when hydraulic pressure is shut off. Model 425 are non-locking and require hydraulic pressure to be maintained at all times.

4. Clamping height is provided as part of the part number when the clamp is ordered and achieved by various combinations of nose spacer bars, Item 21, attached to the clamp lid, Item 2, and clamp body spacers, Item 29, attached to the bottom of the clamp base plate, Item 1

5. A compression spring, Item 6, located at the front of the clamp pushes against the lid and keeps the lid, Item 2, elevated when in the depressurized position.

INSTALLATION

1. Verify clamp opening is slightly greater than clamping height, but less than approximately .180”. See notes #3 and #6 on drawings 425 and 425L, as appropriate.

2. Verify that T-nuts are sized properly for T-slots and that Socket Head Cap Screws (SHCS) ¾”-10 are of the proper length.

a. T-nut neck width should be approximately the width of the narrow part of the T-slot.

b. The socket head cap screws (SHCS), when fully tightened, should be flush with or protrude below the bottom of the T-nut. If the screws are too long, they will drag on the bottom of the T-slot; if they are too short, strength will be compromised.

3. After ensuring proper T-nut engagement, set sliding gap by removing SHCS and applying removable thread locking compound (Locktite) to SHCS and reinserting into T-nut with clamp in T-slot. Tighten until the clamp is no longer moveable along T-slot, then back away slightly until the clamp slides snugly in the T-slot. The goal is to keep the gap minimal, yet have good movement of the clamp. See note #3 on Drawings 425 and 425L, as appropriate.

4. Attach hydraulic hoses. Do not overtighten fittings.

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 (425L) clamps, hydraulics will need to be reconnected to reclamp, unlock, and release the clamps.

PLEASE REFER TO 425 AND 425L DRAWINGS WHEN FOLLOWING THE SEQUENCE BELOW:

1. Jog ram to bottom of stroke and prepare for die removal.

2. For locked hydra-mechanical clamps (425L), 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 (425L), turn the lock screws, Item 20, counter-clockwise away from clamp base plates.

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 ensuring a small gap is present (confirms correct clamp height to clamp plate thickness match).

CAUTIONS:

• CLAMPING POINT MUST TOUCH DIE AND BE ENGAGED FULLY - AT LEAST 1/2”

• LIMIT CLAMPING RANGE AS EXPLAINED ON DWG 425 AND 425L

• THE CLAMP MUST BE PERPENDICULAR TO THE DIE – FULL NOSE SPACER BAR ENGAGEMENT.

11. Apply 5,000 psi hydraulic pressure to bolster mounted clamps then to ram mounted clamps.

12. For Locking Clamps (425L), set lock screws, Item 20, by manually turning clockwise – inward, until the lock screw is firmly in contact with clamp base plate.

13. For Locking Clamps (425L) only, release hydraulic pressure.

14. Examine all clamps for proper position and confirm that all clamps are engaged by attempting to move them manually.

15. Commence stamping when ready.

MAINTENANCE

1. Periodically check hoses for signs of wear.

2. Replace hoses if necessary.

3. Examine clamps for damage.

4. Check mechanical Lock Screws to make sure 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 procedure.

8. If a pipe thread fitting is removed, apply new thread tape before reassembling fitting.

SEAL REPLACEMENT PROCEDURE

CAUTION: WEAR SAFETY GLASSES

PLEASE REFER TO DRAWINGS 425PD AND 425LPD AND DO THE FOLLOWING:

1. Unscrew SHCS, Item 25, from T-nut, Item 26 (27 or 28). This is easier to do while the clamp is in a T-slot.

2. Move clamp to a suitable work area.

3. Remove nose spacer bar and bottom clamp body spacers to get to have the base clamp ready for disassembly. This will be necessary for proper shimming when setting torques on reassembly.

4. Turn clamp upside down and extend Item 5, Spring, with a small tool with a hook at the end and remove Item 12, Roll Pin. There are two Extension Springs.

5. Remove the two Rocker Screws, Item 4 and Alignment Washer, Item 18.

6. Separate the two clamp halves. Remove the two Compression Springs, Item 6, if necessary.

7. Extract the two Pistons, Item 3, if possible. If they are too recessed, apply slight hydraulic pressure to push the pistons out Use extreme caution and cover the pistons with shop rags or other material. Dispose of oily rags in a proper manner.

8. Examine pistons and cylinders. Carefully remove metal shavings or other debris which may have caused the leak. Polish cylinder if necessary.

9. Apply Magnalube-G lubricant and replace O’ Rings, Item 7 and Backup Ring, Item 8. Make sure O’ Rings is nearest the bottom of piston (See drawing page 1 showing piston and seals enlarged).

10. Reassemble clamp in reverse sequence and be careful to observe the following:

a. Be careful when inserting pistons. Avoid any sharp edges.

b. Position Alignment Washer, Item 18 as shown on drawing.

c. It is critical that the upper clamp body is installed properly. Observe Note 8 instructions on drawing 425PD and 425LPD.

d. Place a 1.5” steel spacer block under nose area (nose spacer bar and bottom spacer plate shim removed) when installing rocker screws.

e. Apply removable thread locking compound (Loctite) to the Rocker Screws, Item 4.

f. Torque screws to specified torque (See note 8).

g. When re-installing clamp on press, refer to the Installation section.

h. If a pipe thread is removed, clean and reapply Teflon thread tape before reinstalling.

CAUTION:

MAKE SURE BOTH ROCKER SCREWS ARE TIGHTENED EXACTLY THE SAME. IF NOT, ONLY ONE SCREW WILL CARRY THE LOAD AND CLAMP FAILURE MAY OCCUR.

Note: Item 19, Rest Button, is present in 425L clamp bodies. It is used when the clamp is used in the Hydra-Mechanical configuration. Item 20, a threaded hole for locking screw is only used in 425L clamps for locking.

RECOMMENDED SPARE PARTS

For Non-Locking Clamps (425)

Please refer to parts contained in Seal Replacement Kit 425PD-SEAL and Refurbish Kit Part# 425PD-RFB as shown on drawing 425PD.

For Locking Clamps (425L)

Please refer to parts contained in Seal Replacement Kit 425LPD-SEAL and Refurbish Kit Part# 425LPD-RFB as shown on drawing 425LPD.

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

ANTI-ROTATION GAP

SHOWN

MODEL REV -

425 ROCKER CLAMP RC-425

TOP OF STUD, 3/4-10

4

THE CLAMP IS AVAILABLE WITH A HANDLE (MODEL-425H) SHOWN IN THIS VIEW ONLY.

7

COMPOUND AND/OR OTHER MEANS OF ENSURING THAT THE TO BE MOVED EASILY. USE PERMANENT THREAD LOCKING AND THE T-SLOT IS MINIMIZED YET ALLOWING THE CLAMP INSTALLATION SO THAT THE GAP BETWEEN THE T-NUT THE STUD IS SECURED TO THE T-NUT AT THE TIME OF THE DIE. TOTAL GAP SHOULD NOT EXCEED 3/16". AND STILL APPLY 8,000 LBS OF CLAMPING FORCE TO MUST BE SUFFICIENT TO CLOSE THE GAP AT 3 AND 6 DIE TO A MINIMUM. THE CLAMP STROKE WHICH IS .36 KEEP THE GAP BETWEEN THE CLAMP ROCKER AND THE HYDRAULIC CONNECTION, 37° FLARE, 7/16-20 UNF. .18" GAP FOR EASE OF CLAMP MOVEMENT.

DESIRED

NUMBER. NOMINAL CLAMP HEIGHT INCLUDES A NOMINAL

STUD DOES NOT ROTATE IN THE T-NUT.

DIES HAVING UNDERPLATES OR OTHER SUITABLE SURFACES FIX MOUNTED OR ATTACHED TO A T-NUT. USE WITH THE MODEL-425 IS A ROCKER CLAMP WHICH MAY BE PRESSURE OF 5000 PSI. CLAMPING FORCE IS 8,000 LBS. AT MAXIMUM HYDRAULIC

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

ALIGNMENT

BRASS, .281 ID

STR, 1/8NPT TO JIC

1/8NPT

.093Ø X .625

BUTHD, 1/4-20 X .500

SCREW, SET, 8-32 X .875

BACKUP RING, NON SPLIT SPRING, COMPRESSION, .484 OD

1.051

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

PISTON SUBASSEMBLY

2 REQUIRED

ITEM 21 IS INSTALLED UNLESS OTHER HANDLE MOUNTING SCREWS (NOT SHOWN). SCREW LENGTH IN NOTE 4 AND ITEM 11. AS A SEPARATE LINE ITEM. IT INFLUENCES THE ACHIEVING HIGHER CLAMP GRIP IS AVAILABLE THIS SPACER PLATE (NOT SHOWN) FOR PLACE CLAMP IN A T-SLOT AND TIGHTEN SCH SHC SCREW (ITEM 25) FIRMLY UNTIL CLAMP DOES NOT MOVE. PLACE A 1.500" THK SPACER BLOCK AGAINST CLAMP BASE AS SHOWN ABOVE. APPLY LOCKTITE OR EQUIV. TO ROCKER SCREW (ITEM 4) AND TORQUE TO 350 IN/LBS.

SELECT ONE.

THICKNESS IS SPECIFIED.

THIS COLUMN SHOWS PARTS CONTAINED IN

REFURBISH KIT (PART# 425PD-RFB).

THIS COLUMN SHOWS PARTS CONTAINED IN SEAL REPLACEMENT KIT (PART# 425PD-SEAL)

THESE COLUMNS SHOW PARTS INCLUDED IN BASIC MODEL-425 AND 425H CLAMP (REFERENCE ONLY)

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 sho uld be confirmed by contacting PFA, Inc.

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 BLOCK

REFER TO USER GUIDE FOR MAINTENANCE. APPLY MAGNALUBE-G TO PISTONS, O-RINGS AND ALL MOVING PARTS BEFORE ASSEMBLY.

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

ANTI-ROTATION FEATURE FITS IN T-SLOT STUD

TOP OF

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

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

SHOWN IN THIS VIEW ONLY. THE CLAMP IS AVAILABLE WITH A HANDLE (MODEL-425LH)

KEEP THE GAP BETWEEN THE CLAMP ROCKER AND THE DIE TO A MINIMUM. THE CLAMP STROKE WHICH IS .36 MUST BE SUFFICIENT TO CLOSE THE GAP AT 3 AND 6 AND STILL APPLY 8,000 LBS OF CLAMPING FORCE TO THE DIE. THEREFORE, THE GAP AT 6 SHOULD NOT EXCEED .18 WHICH IS 50% OF STROKE.

HYDRAULIC CONNECTION 37° FLARE 7/16-20UNF.

A NOSEPIECE OF REQUIRED THICKNESS IS ATTACHED TO THE NOSE OF THE CLAMP ROCKER, IF NECESSARY, TO MATCH REQUIRED DIE CLAMPING RANGE. IF CLAMPING SURFACE IS GREATER THAN 1.50 A SPACER (NOT SHOWN) MAY BE ADDED UNDER THE CLAMP BODY TO ELEVATE THE CLAMP.

THE STUD IS SECURED TO THE T-NUT AT THE TIME OF INSTALLATION SO THAT THE GAP BETWEEN THE T-NUT AND THE T-SLOT IS MINIMIZED YET ALLOWING THE CLAMP TO BE MOVED EASILY. USE PERMANENT THREAD LOCKING COMPOUND AND/OR OTHER MEANS OF ENSURING THAT THE STUD DOES NOT ROTATE IN THE T-NUT.

CLAMPING FORCE IS 8,000 LBS. AT MAXIMUM HYDRAULIC PRESSURE OF 5000 PSI.

THE MODEL-425L IS A ROCKER CLAMP WHICH MAY BE FIX MOUNTED OR SECURED BY A T-NUT. USE WITH DIES HAVING UNDERPLATES OR OTHER SUITABLE SURFACE WHICH THE CLAMP CAN GRIP ON. AFTER ACTUATING HYRAULIC PRESSURE THE MECHANICAL LOCK IS SET AND THE HYDRAULIC PUMP IS DISCONNECTED. THE MECHANICAL LOCK THEN

RETAINS CLAMPING PRESSURE. HYDRAULIC PRESSURE NEEDS TO BE SUPPLIED TO OPEN THE MECHANICAL LOCK.

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

.281 ID

1/8NPT

PIN,

BUTHD, 1/4-20 X .500

BELLEVILLE, .656 ID WASHER, ALIGNMENT WASHER, BRASS,

PISTON SUBASSEMBLY

2 REQUIRED

NON

COMPRESSION, .484 OD

LID, CLAMP BASE PLATE DATA REFERENCE: 3 2 1 ITEM WASHER,

ROCKER REV -

MODEL PAGE 1 OF 3

PLACE CLAMP IN A T-SLOT AND TIGHTEN SCH SHC SCREW (ITEM 25) FIRMLY UNTIL CLAMP DOES NOT MOVE. PLACE A 1.500" THK SPACER BLOCK AGAINST CLAMP BASE AS SHOWN ABOVE. APPLY LOCKTITE OR EQUIV. TO ROCKER SCREW (ITEM 4) AND TORQUE TO 350 IN/LBS.

ITEM 21 IS INSTALLED UNLESS OTHER HANDLE MOUNTING SCREWS (NOT SHOWN).

5 6 7 8

THICKNESS IS SPECIFIED.

THIS COLUMN SHOWS PARTS CONTAINED IN

REFURBISH KIT (PART# 425LPD-RFB).

THIS COLUMN SHOWS PARTS CONTAINED IN SEAL REPLACEMENT KIT (PART# 425LPD-SEAL)

THESE COLUMNS SHOW PARTS INCLUDED IN BASIC MODEL-425L AND 425LH CLAMP (REFERENCE ONLY)

4 3 2 1

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms

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

Sale apply.

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 sho uld be confirmed by contacting PFA, Inc.

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

HOSE OR RIGID TUBE

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

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

4 PLACES FLEXIBLE HOSE TO CLAMPS

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. THE OTHERS.

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.

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

NOTES: UNLESS OTHERWISE SPECIFIED

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

HOSE OR RIGID TUBE

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 REV -

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

6 PLACES FLEXIBLE HOSE TO CLAMPS

BOLSTER OR RAM

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.

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

NOTES: UNLESS OTHERWISE SPECIFIED

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

HOSE OR RIGID TUBE

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

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

8 PLACES FLEXIBLE HOSE TO CLAMPS

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. THE OTHERS.

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.

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

NOTES: UNLESS OTHERWISE SPECIFIED

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

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

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

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

CLAMP SHOWN IN THESE SCHEMATICS IS A MODEL-201 HYDRAULICALLY ACTUATED SPRING RELEASE DESIGN. SCHEMATIC APPLIES TO ALL CLAMPS WITH EXTERNALLY MOUNTED PILOT

NOTES: UNLESS OTHERWISE SPECIFIED OPERATED CHECK VALVES.

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

HOSE OR RIGID TUBE

CLAMPING CIRCUIT

T-OFF TO CONNECT PRESSURE SENSOR, IF USED. (SEE MORE DATA

ON PAGE 3)

MODULE CONTROL POWER AND HYDRAULIC MANIFOLD P/N 1068 CAN BE INSTALLED ANYWHERE ALONG THE CLAMPING AND RELEASE CIRCUITS.

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 HOSES TO EACH CLAMP

PILOT CIRCUIT IT MUST BE REPAIRED BEFORE CLAMPS

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.

CLAMPSAFE 3

HYDRO CIRCUIT W/ CHECK VALVES

BOLSTER OR RAM

8. IF THIS LINE BREAKS (PILOT CIRCUIT)

7. IF THIS LINE BREAKS ALL CLAMPS WILL RETAIN CLAMPING CAN BE OPENED. (IN AN EMERGENCY, HOSE FITTINGS

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.

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). AT CLAMPS COULD BE REMOVED TO ALLOW HYDRAULIC FLUID TO ESCAPE AND THE CLAMPS TO OPEN.)

5. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC

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

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 sho uld be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

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

POWER

CIRCUIT #2 (UNCLAMP) FROM POWER & CONTROL MODULE

PILOT

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

POWER

CIRCUIT #1 (UNCLAMP) FROM POWER & CONTROL MODULE

PILOT

CONDUIT HERE

PRESSURE SWITCH MODEL-382 MODULE

SENSOR SWITCH (TWO)

HOSE

ILLUSTRATED BELOW SAME CIRCUITRY AS

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

CIRCUIT #1 TO CLAMP RETURN

CLAMP RELEASE

MOUNTING HOLES MODEL 4197-3 C TO OTHER CHECK VALVES

PILOT OPERATED

1/4-20

CHECK VALVE

CLAMPSAFE 3

PAGE 3 OF 3 REV -

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

PRESSURE SWITCH MAY BE WIRED

3500 PSI WHEN SYSTEM IS OPERATED AT 5000 PSI.

SENSOR IS INSTALLED ON EACH CIRCUIT, AS DESIRED.

MODULES WITH THREE, FOUR OR GREATER NUMBER OF SENSORS ARE AVAILABLE. 11. THIS PAGE SHOWS A MODEL 4197-3 C CHECK VALVE INSTALLED WITH A MODEL-201 HYDRAULIC NUT AND OPTIONAL MODEL-382

12. A PRESSURE SWITCH MODULE IS USED WHEN A PRESSURE

PRESSURE SWITCH MODULE. TWO SEPARATE CLAMPING AND PILOT CIRCUITS ARE SHOWN (MORE CAN BE ADDED).