Danfoss 4MFC-10CUP15LS11 User manual

Installation Guide
General instructions for Danfoss Hansen® Multiplate couplingAN444376292349en-000101

Contents
1.0 INTRODUC TION 32.0 SAFE T Y INSTRUC TIONS 33.0 OPER ATING CONDITIONS 34.0 DUR ABILIT Y AND LIFE TIME 4
5.0 MAINTENANCE 4
6.0 PRODUC T DESCRIPTION 57.0 INSTALL ATION 68.0 SERVICING 68.1 SOCKE T HALF REPLACEMENT 68.2 PLUG HALF REPLACEMENT 7
8.3 REPLACEMENT PA R T NUMBERS 89.0 OPER ATING 8

31.0 INTRODUCTION
This document illustrates operating instructions for Danfoss’ Multi-FF series Multiplate quick disconnect coupling. This user
manual also provides guidance about preventive maintenance of Multiplate coupling and steps for servicing in case of
malfunction.
2.0 SAFETY INSTRUCTIONS
•It is recommended to wear hand-gloves while making connection or disconnection of Danfoss’ Multi-FF device.
•Hold top plate /movable plate on hose lines or on to asurface perpendicular to handle strips, to avoid nger
entrapment during engagement with xed plate.
•Once two plates /sub-systems are engaged, remove your hand off the plate and only rotate the handle. Do not put
hand/fingers in between 2 plates.
•Ensure that ngers are not entrapped in between bottom/xed plate and handle of the device during operation
•Ensure absence of pressure inside the Multi-FF before initiatingdisconnection of system or carrying out any
maintenance work.
3.0 OPERATING CONDITIONS
This section covers general operating conditions to obtain long life of multiplate coupling without unpredicted failure.
It is advisable to use multi plate coupling under same operation conditions.
The allowed operating temperature lies between -20°C to 100°C. This is operating temperature of multiplate coupling
assembly and subjected to change based on seal material conguration of Coupling half. The permitted storage
temperature lies between +10°C and +35°C.
The maximum operating relative air humidity should not exceed 75%. Similarly, it should not exceed 60% for storage.
Dust &vibration free environment will ensure correct functionality of multiplate coupling.
Maximum operating pressure for multiplate coupling is as follow. These are tested at 1:4 times operating pressure and it
is advisable that system pressure for continuous service shall not exceed maximum operatingpressure recommended
below.
Multi-FF Par t
number
No. of
coupling
ports Coupling body size Max. operating pressure
4MFC-10CUP15LS11 4ISO 10 250 bar
4MFCE1-12CUP15L 4ISO 12 350 bar
4MFC-12CUP15L 4ISO 12 350 bar
4MFC-1015L 4ISO 10 350 bar
4MFCE1-1015L 4ISO 10 350 bar
6MFC-1015L 6ISO 10 350 bar

44.0 DURABILITY AND LIFETIME
The durability and lifetime of the quick coupling system depend on the following:
•Environmental conditions
•Conditions of use
•Timely preventive maintenance
•Construction features of the on-site situation
5.0 MAINTENANCE
Components must be maintained after every 12 months storage period for the purpose of monitoringand repairs.
Replacement with original parts will ensure correct functionality.
Clean your quick coupling system once a week or every 50 coupling-decouplingcycles. To do this, use the usual cleaning
agents such as dry ice. After doing so, lubricationmust be carried out.
Apply solid lubricant (grease) after every 6 months or 1000 coupling-decouplingcycles in critical areas listed below:
1. Racks on movable plate
2. Pinion in fixed plate
Figure 1.

56.0 PRODUCT DESCRIPTION
Multiplate coupling, marketed as Danfoss’ Multi-FF series product, is asystem which enables connection and
disconnection of 2or more QDC’s in asingle operation. Briefly, this system would have two pre-assembled sub-systems,
one comprising of male halves (plugs) and other one having equal number of female (socket) halves with centralized
locking mechanism. These two sub-systems, when guided together with the help of handle operated mechanism, will
connect all QDC’s together and open the internal ow path.
Figure 2. Multiplate coupling assembly

67.0 INSTALLATION
The quick coupling systems are to be installed under the observations of general accident prevention regulation. In order
to prevent damages to the quick coupling system or life-threatening injuries to people during the tting of the quick
coupling to the machine, the following points must be observed.
•Installation must be carried out by qualified person with all safety precautions.
•Multiplate coupling should be checked for damages in transit before installation.
•There should not be stumbling and falls of hydraulic or electrical lines that can create hazards.
•Refer to assembly drawings from Danfoss.com for installationthread details.
8.0 SERVICING
Key components of Danfoss’ Multi-FF can be easily serviced and replaced upon malfunction. Following sections and
figures illustrates step-by-step guide for replacing these components with use of standard tools.
8.1 SOCKET HALF REPLACEMENT
Figure 3. Socket (female) half assembly on fixed plate
Socket (female) half assembly on fixed plate comprises of 2 sub-components,
1. Socket (Female) body
2. Socket (Female) half (without body)
Perform following steps for removing socket half (female) coupling from xed plate:
A. Align semi-circular slot on socket body (a) with that on fixed plate (b) by rotating the coupling half
as shown in figure 3.
B. Insert standard 4mm dia. pin / tool in this slot after alignment to block the rotation of socket half.
C. Using standard wrench, hold hex on end connection of coupling and rotate in counter-clockwise
direction to unscrew the sub-assembly.
D. Remove sub-assembly and socket body from fixed plate.

7Perform following steps for assembly of socket half (female) coupling in fixed plate:
A. Disassemble socket body from rest of the sub-assembly.
B. Insert socket body in respective hole in fixed plate such that shoulder of the socket body is rested against
counter-bore in plate.
C. Align semi-circular slot on socket body with that on fixed plate by rotating the body.
D. Insert standard 4 mm dia. pin / tool in this slot after alignment to block the rotation of socket body.
E. Insert sub-assembly into socket body from bottom side, and screw threads in clockwise direction.
F. Using standard wrench, hold hex on end connection of coupling and rotate in clockwise direction to apply
torque as per below chart.
Coupling series Coupling size Coupling half Torque in N-m
FF (ISO 16028) ISO 6Socket 60
FF (ISO 16028) ISO 10 Socket 60
FF (ISO 16028) ISO 12 Socket 90
FF (ISO 16028) ISO 16 Socket 90
FF (ISO 16028) ISO 19 Socket 100
FF (ISO 16028) All Plug 30
8.2 PLUG HALF REPLACEMENT
Figure 4. Plug (male) half assembly on movable plate
Plug (Male) half assembly on movable plate comprises of 2 sub-components:
1. Plug (Male) assembly
2. Jam Nut
Perform following steps for removing plug half (male) coupling from movable plate:
A. Hold Nut in position by inserting astandard tool in slots provided on top surface, as shown in
Figure 4Jam Nut view.
B. Using standard wrench, hold hex on end connection of coupling and rotate in counter-clockwise
direction to unscrew the sub-assembly.
C. Remove plug assembly and Jam Nut from movable plate.

8Perform following steps for assembly of plug half (male) coupling in xed plate:
A. Insert plug body in respective hole in movable plate such that shoulder of the plug body is rested
against plate surface.
B. Install Jam Nut on plug half from opposite end of plate and screw nut in clock-wise direction.
C. Hold Jam nut in position by using standard tool and inserting it in slots provided on Nut.
D. Using standard wrench, hold hex on end connection of coupling and rotate in clockwise direction
to apply torque as per above chart.
8.3 REPLACEMENT PART NUMBERS
Refer below table for ordering correct parts for replacement. Other end connections are also available upon request for
plug and socket coupling assemblies.
MultiFF Part number Plug coupling Socket coupling Dust cap seal
4MFC-10CUP15LS11 10FFPCUP12LS21 10FFS15LS21 4MFS21-10S11
4MFCE1-12CUP15L 12FFPCUP15LS21 12FFS15LS21 4MFS21-12
4MFC-12CUP15L 12FFPCUP15LS21 12FFS15LS21 4MFS21-12
4MFC-1015L 10FFP15LS21 10FFS15LS21 4MFS21-10
4MFCE1-1015L 10FFP15LS21 10FFS15LS21 4MFS21-10
6MFC-1015L 10FFP15LS21 10FFS15LS21 6MFS21-10
9.0 OPERATING
Figure 5. Operating multiplate coupling
As shown in figure 5, two plates of assembly play major role in operation of connection and disconnection. Fixed plate
with lever and cover, and movable plate. Movable plate has plug (male) half and xed plate has socket (socket) half.
1. First step is to open cover/dust cap and clean plate surface from any dust/foreign particles.

92. Second step is to move movable plate towards fixed plate in order to align mating parts.
3. Once two sub-systems are aligned, rotate the handle in counter-clockwise direction through 130° angle.
4. Verify that Red push button is moved away from plate, and “click” sound is heard to ensure connection is
complete
5. Note that safety latch will prevent accidental disconnection of system.
With these simple steps, multiplate coupling will be ready for use. It is important to follow safety instructions provided in
section 2.0 while operating Multi-FF.
For disconnection of Multi-FF, follow below listed steps:
1. Ensure that system pressure is bled-off to tank by switching to correct direction control valve position and
attachment on equipment is grounded properly. Disconnection of Multi-FF coupling under pressure is not
recommended.
2. After ensuring step 1points, push the Red push button mounted on side face of fixed plate.
3. With red button still pushed inside, rotate the handle in clockwise direction through 130° angle, till “click”
sound is heard and handle is rested in default position.
4. Remove movable plate from fixed one and park appropriately on attachment.
5. Ensure that dust cap /cover is closed to protect top surface of fixed plate from contamination.
6. During dust cap /cover is getting closed, ensure that seal band on fixed plate is in place. If seal band is lost
or damaged, contact Danfoss representative to order replacement Dust cap seal as per part number details
provided in section 8.3.

Danfoss can accept no responsibility for possible errors in catalogs, brochures, and other printed material. Danfoss reserves the right to alter
its products without notice. This also applies to products already on order provided that such alterations can be made without subsequent
changes being necessary in specifications already agreed. All trademarks in this material are the property of the respective companies.
Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
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