Imperial Tools 1101 Cap Chaser User Manual
Chaser kit for use with thermal cap-check
THERMAL ENGINEERING COMPANY
A Division of Airserco Manufacturing Company LLC
7555 Tyler Boulevard; Mentor, OH 44060 800-473-1754 Fax: 440 946-8188
CHASER KIT for use with Thermal CAP-CHECK
The CHASER KIT is designed to pass a lead wire CHASER thru a capillary tube to
assure that it is completely clean and unrestricted. The chaser is pushed thru the cap tube
by hydraulic pressure from a Thermal CAP-CHECK.
1. Cut off cap tube at condenser and use CAP-CHECK in regular way to be sure tube is
not completely restricted and is full of oil.
2. Remove the CAP-CHECK and cut off the portion of the cap tube (about 1"), which
the adapter contacted. Be sure tube is cleanly cut through and not kinked. Ream out the
end of the tube with the reamer end of the cutoff file until it is clean and free from burrs.
3. Use the CAP-GAGE to determine the size of the cap tube then select the spool of lead
wire for that size. Cutoff a chaser 3/4 to inch long, lay it on the 3/4 x 2" part of the size
tool and roll it with the 3/8" square part of the tool until it is perfectly straight and
4. Insert the chaser into the cap tube by gripping about 1/4" at a time until it is all in the
cap tube then take the next size smaller gauge wire on the CAP-GAGE and push the
chaser into the cap tube as far as it will go. The chaser should go into the cap tube easily
and smoothly. If it doesn't, chaser size is incorrect or opening into cap tube is not smooth.
5. Reconnect the CAP-CHECK and pump a pressure against the chaser of not more than
4000 PSI unless the CAP-CHECK is equipped with the trigger gauge shutoff valve. If
rapid pumping is necessary to hold up pressure the chaser will normally pass thru the cap
tube in less than 30 seconds, but if the pressure holds up without pumping or very slow
pumping the chaser has been held back by a restriction and it may be necessary to hold
the pressure against it for an extended period until the pressure will drop indicating the
chaser has passed thru.
6. After the chaser has passed thru, pump a few additional strokes to flush out the tube
and remove the CAP-CHECK.
7. DON'T USE A CHASER IN A CAP TUBE THAT IS KINKED, HAS SHARP
BENDS OR HAS A TEE, Y, OR SOLDERED SLEEVE. THE TUBE MUST HAVE
AN UNBROKEN PATH FROM THE POINT OF CONNECTION TO THE