HP 403349-003 - Manual (Page 63)

Removal and replacement procedures 63
9. Pull the heat exchanger unit out toward you.
To replace this component, see "Replacing the heat exchanger unit (" Replacing the heat exchanger unit
with couplers " on page 63 )."
Replacing the heat exchanger unit with couplers
CAUTION: The heat exchanger unit weighs 23.6 kg (52 lb) with the additional weight of the
water. Use extra caution when removing and replacing the top heat exchanger unit because it
might be higher than your shoulders and is heavy and awkward to lift.