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STEP 17

The supplied RLS Crimp Gauge will confirm the 

measurement of the finished crimp band diameter. See 

crimp band locations noted in Step 16. It may be 

necessary to rotate the gauge in order to not interfere 

with the copper tube flashing left from the crimping 

process. 

STEP 16

A special “RLS” mark will be displayed on the tube to 

let you know the connection is crimped properly.

Crimp Bands

STEP 14

Press and hold the trigger 

on the ZoomLock Crimping 

Tool to begin the crimping 

process.

Continue to hold the trigger until the ZoomLock 

Crimping Tool completes its cycle. 

STEP 15

Open the jaws of the ZoomLock Crimping Tool and 

remove from the fitting. If the jaws do not open, the 

crimping cycle was not completed. For manual 

override instructions, see ZoomLock FAQs, Form 

P-457.  

WARNING: ZOOMLOCK IS DIFFERENT THAN 

OTHER INDUSTRY CRIMP TECHNOLOGY. 

DO NOT

 

CRIMP WITH JAW CENTERED ON O-RING.

O-Ring

Flange

JAW MUST ALIGN BETWEEN 

O-RING AND OUTER FLANGE.

STEP 13

Properly place the crimping jaws onto the fitting. Grooves in the jaws make 

it easy to align. See illustration at right for proper crimping alignment.

O-Ring

STEP 12

Open the jaws of the ZoomLock Crimping Tool.

STEP 11

Push the fitting onto the tube. A reference dimple in 

the fitting helps assure insertion depth and secure fit. 

STEP 10

Using the dimple as a reference point for the center of 

the fitting, mark the tubing with a permanent marker 

to indicate proper insertion depth on every tube. 

STEP 9

Use a heavy duty scouring pad to clean the ends of the 

copper tubes to be joined. Tube ends should be free 

and clear of oxidation, dirt or debris.

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