Danfoss ET4040, Operator'S Manual

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© 2022 Danfoss 

ET4040 Crimp Machine Operator´s Manual  December 2022

Crimping Procedures

WARNING: Maintain clear distance from all moving parts .

Crimping Procedure 

Refer to the current Danfoss Crimp Specifications for com-

plete and detailed crimp specification information for each 

hose and fitting style.
1. Retract the cylinder by pressing the RETRACT switch until 

the cylinder is fully retracted. Select the proper die cage 

from current Danfoss Crimp Specifications. Insert die cage 

onto the pressure plate. 

2. Press the proper PRESET button or key in a value to the 

DISPLAY. (See page 5 for keypad operating instructions.)

3. Position the fitting in the crimp die set according to the 

corresponding figure shown in Figure 5.

4. To crimp the fitting, press the CRIMP switch or footswitch. 

The die cage will advance until the fitting is fully crimped 

(Figures 5 & 6). It will then automatically begin to retract, 

signifying that the crimp is complete. Release the crimp 

switch or footswitch. The cylinder will automatically 

retract and stop at the “full retract” position (or at the 

programmable retract position, if it has been set).

Hint:

 Retraction can be halted at any point by momentarily 

pressing the RETRACT switch or footswitch.
5. Verify the correct crimp diameter.

Procedure for determining a target setting 

Enter the number “500” into the DISPLAY, and start the 

crimping process. If the dies crimp the fitting, measure the 

crimp diameter and decrease the DISPLAY setting by the 

same amount that you wish to decrease the crimp diam-

eter. If the dies don’t touch the fitting, lower the DISPLAY 

setting by 050 to “450” and crimp the fitting again. If that 

still isn’t enough, continue to reduce the DISPLAY setting 

by 050 increments until the dies make contact with the 

fitting. Then, measure the crimp diameter  and decrease 

the DISPLAY setting by the same amount that you wish to 

decrease the crimp diameter.  

Example:

 If a display setting of “250”produces a crimp 

diameter of 1.004 inches, subtract the crimp specification 

(0.990 inches) from the diameter that you measured (1.004- 

0.990=0.014). Then, subtract “014” from the DISPLAY 

setting (250-014=236), and change the DISPLAY to “236.” 

Crimp the fitting again, and measure the crimp diameter. If 

the crimp diameter is still too large, repeat this process.  

Note:

 Record the setting for future reference.

Crimp to scribe line

Full flat crimp

Figure 5

Figure 6

Scribe

Line

1/8” (3mm)

Scribe

Line

1/8” (3mm)