Model FF-2500 Proportioning Unit
18
25942-1, Issue 4
b) Connect the heated hoses
to the isolation hoses and
tighten. Take care not to
cross-thread or over-
tighten the fittings,
ensuring a leak-proof
chemical connection.
c) Connect the air hoses and
tighten the fittings.
Figure 9. Hose Connection Step (b & c)
d) Install the isolator
between the chemical
hose fittings. Use a small
amount of tape to hold it
in place
(see Figure 10)
.
IMPORTANT: Always install
the isolator to prevent damage
to the fittings, but do not tape
fully in place until after the
hoses are pressurized and
found to be free of leaks.
Figure 10. Hose Connection Step (d)
See Figure 11 for Steps e) and
f).
e) Connect the TSU harness
plugs together. To ensure
a secure electrical
connection, place the
protective electrical
isolator boot over each
plug and tape together.
™
Figure 11. Hose Connection Step (e & f)
f) Plug the Power-Lock hose heat connectors together. Secure the connection in
place with the cable tie provided; failure to do so could cause a disruption in the
hose heat system, should the connectors separate.
*** Repeat Step 4 for adding additional hoses. ***
5. Install the temperature sensing unit (TSU) to the gun whip hose as follows:
a) Pull out and carefully straighten the loose end of the temperature probe from the
TSU.
