Danfoss ET1280 Crimp Machine Operator’s Manual
AQ439269292775en-000101 © Danfoss ET1280 Crimp Machine Operator’s Manual | 2023.01. | 7
Crimping Procedures
Establishing Crimp Settings
The adjustment knob at the top of
the machine determines the crimp
diameter for each combination
of hose, fitting, and die cage. The
numbers on the dial and barrel of
the machine are for selecting target
settings and not crimp diameters.
Settings between 000 and 400
can be achieved with this crimp
machine. Consult the target setting
chart for the ET1280 crimp machine
for the initial setting.
There are 25 marks on the dial
(0-24), and 16 marks on the barrel
(025-400 by 025 increments). The
top of the barrel corresponds to a
000 setting. When the adjustment
knob is rotated to the top most
position on the crimper, and the “0”
mark is located as shown in Figure
2, the machine setting is 000. Each
complete downward rotation of
the adjustment knob increases
the target setting by 025; each
mark around the dial corresponds
to a 001 change in target setting.
For example, to achieve a target
setting of 050, the adjustment
knob is rotated until the top of it
corresponds to the 050 mark on the
barrel, and the 0 mark on the dial
is lined up with the center, vertical
mark on the barrel (see Figure 3).
One more full downward rotation
of the dial would result in a target
setting of 075. If the desired target
setting is 065, the dial would instead
be rotated downward 15 “marks” on
the dial, or approximately 2/3 of a
turn, past the 050 target setting.
Crimping Procedures
Refer to the PowerSource Crimp
Spec tool at danfoss.com/crimp
for complete and detailed crimp
specification information for each
hose and fitting style.
1. Select and load the proper
die cage according to the
PowerSource Crimp Spec tool at
danfoss.com/crimp.
2. Rotate the adjustment knob/
barrel indicator to the proper
setting (see Example).
3. Position the fitting to the proper
crimping position within the
die cage according to the
PowerSource Crimp Spec tool at
danfoss.com/crimp.
4. To crimp the fitting in an 110V
Power Unit model, press and
hold the crimp switch in the
upward position.
5. The crimp switch may be
toggled up and down as
required to reposition the fitting.
To crimp the fitting in a Hand
Pump, Air/Hydraulic Pump or
12V DC Pump model, activate
the hydraulic power source
according to the respective
pump manual.
Note: The use of a 10,000
psi hydraulic power source
is required to operate the
ET1280 crimp machine. If lower
rated power units are utilized,
improper crimping may result.
6. When the fitting is fully crimped,
all movement in the machine
will stop, and the black guard
around the piston (pinch
point hat) will move up and
completely cover the red
indicator ring located on the
adjustment knob.
7. Release the hydraulic pressure
and remove the crimped hose
assembly. For the 110V Power
Unit model, this is accomplished
by pressing and holding the
crimp switch in the downward
position until the machine is
completely retracted. For the
Hand Pump, Air/Hydraulic Pump
or 12V DC Pump model, refer to
the manual provided with the
respected pump for pressure
release.
8. Verify that the correct crimp
diameter and crimp length is
achieved.
For proper crimping procedure, refer
to the PowerSource Crimp Spec tool
at danfoss.com/crimp.
Example:
Position the adjustment knob at a
setting of 300. Activate the hydraulic
pump and attempt a crimp. If the
dies crimp the fitting, measure
the crimp diameter and decrease
the machine setting (rotate the
adjustment knob upward) by the
same amount in thousandths of an
inch that you wish to decrease the
crimp diameter (a smaller target
setting number means a smaller
crimp diameter. If the dies do not
crimp the fitting, decrease the
machine setting by 050 increments
until the dies do touch the fitting
and the resultant crimp diameter
can be measured.
For a target crimp diameter of 0.990
inches and a machine setting of
250 produces a crimp diameter of
1.124 inches, subtract the target
crimp diameter (0.990 inches) from
the diameter you measured (1.124
- 0.990 = 0.134). Subtract 134 from
the machine setting (250-134=116)
and change the machine setting
to 116. Crimp the fitting again and
measure the crimp diameter. If the
crimp diameter is too large, repeat
this process. If the crimp diameter
is too small, repeat the process but
instead add the difference to the
machine setting.
Figure 2 Figure 3
Figure 4
