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Status Indicator
LED
Indicates
Flashing
Rotation
White
complete
Solid Green Expansion
in progress
Flashing
Expansion
Green
complete
Flashing Red Expansion
error
Flashing Red
Service
and Green
required
Cold-weather Use
Colder weather (<40°F/4°C) requires a longer con-
traction time and fewer expansions.
Troubleshooting ProPEX
If fittings will not seal, check for the following:
• Is the expander head screwed on tightly? Tighten
the head securely. Ensure the head is tight against
the tool.
• Are the expander head segments bent or mis-
aligned? Replace expander head.
• Are the expander head segments failing to contract
between expansions? Clean the head and lubricate
the cone. Ensure cogs are engaged.
•Is the expander cone over or under lubricated?
Clean and lubricate.
• I s the fitting damaged? Replace fitting.
• Is the expander cone bent or damaged? Return to
a MILWAUKEE service facility for repair.
• Was the expander head held in the expanded posi-
tion before tubing was removed? Cut 3"-5" (3" for 2"
PEX and 5" for 2.5" and 3" PEX) off the end of the
tubing and restart the procedure with a new ProPEX
Ring.
• Was the tubing rotated slightly after each expan-
sion? Cut 3"-5" (3" for 2" PEX and 5" for 2.5" and
3" PEX) off the end of the tubing and restart the
procedure with a new ProPEX
• Are the tubing and ProPEX
Wipe dry.
• Is grease getting into the tubing from the expander
head? Wipe grease from tubing. Clean the expander
head, ensuring excessive amounts of grease are not
present on the head.
If ProPEX
Ring slides during expansion:
®
• Are the tubing and ProPEX
Wipe clean.
• Are your hands clean and dry? Wipe dry — oils from
your hands can lubricate the tubing and ProPEX
Ring.
• Are you holding the ring in place? Place your thumb
against the ring and hold in place during first couple
of expansions.
Action
Insert into tubing and release
the trigger
Tool will continue to expand to
maximum diameter
Start process for next
expansion
Correct the error and restart
the expansion process
Contact a MILWAUKEE
service facility for ALL repairs.
Connections
®
Cogs
Ring.
®
Ring clean and dry?
®
Ring clean and dry?
®
If expander head does not expand when trigger is
pulled:
• Verify that the expander head is fully retracted.
• Set tool on a work surface with the cone pointing up.
Pull the trigger and hold until the green light indicates
that the press cycle has started. Release the trigger
and then press and hold the manual retract button un-
til the motor stops (up to 1 minute). Repeat if expand-
er head still does not expand when trigger is pulled.
If the head does not fully retract at the end of an
expansion:
• Press the manual release button to fully retract the
expander cone
• Remove the expander head from the tool and rein-
stall, verifying proper installation.
MAINTENANCE
To reduce the risk of injury, always
WARNING
unplug the charger and remove the
battery pack from the charger or tool before
performing any maintenance. Never disassemble
the tool, battery pack or charger. Contact a
MILWAUKEE service facility for ALL repairs.
Maintaining Tool
Keep your tool, battery pack and charger in good
repair by adopting a regular maintenance program.
Each month:
• Remove the expander head and
soak in degreasing agent to
remove grease from between
expander segments. Re-lubri-
cate head (expander head
collar groove, expander cone
mating surface).
• Wipe expander cone and rotate
collar with clean, dry, lint-free
cloth. Re-lubricate when com-
plete.
After six months to one year,
depending on use, return the tool, battery pack and
charger to A MILWAUKEE service facility for:
• Lubrication
• Mechanical inspection and cleaning (gears, spin-
dles, bearings, housing, etc.)
• Electrical inspection (battery pack, charger, motor)
• Testing to assure proper mechanical and electrical
®
operation
If the tool does not start or operate at full power with
a fully charged battery pack, clean the contacts on
the battery pack. If the tool still does not work prop-
erly, return the tool, charger and battery pack, to a
MILWAUKEE service facility for repairs.
Refer to the ONE-KEY App for information regarding
necessary servicing, such as internal battery life and
crimp count.
Chemical Burn Hazard.
WARNING
This device contains a
lithium button/coin cell battery. A new
or used battery can cause severe in-
ternal burns and lead to death in as
®
little as 2 hours if swallowed or enters the body.
Always secure the battery cover. If it does not
close securely, stop using the device, remove the
batteries, and keep it away from children. If you
think batteries may have been swallowed or
entered the body, seek immediate medical atten-
tion.
5
Lubrication
areas
ONE-KEY™
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