Lincoln Electric IM723-A - Manual (Page 18)

D-4 MAINTENANCE D-4
Service the pump’s inlet strainer:
a. Place absorbent towels underneath pump head to
prevent stray coolant from wetting cooler’s electrical
components.
b. Hold pump head to apply counter torque when loos-
ening strainers 7/8 acorn nut. Do not confuse with
3/4 acorn nut. Remove nut and slide inlet strainer
down and out from pump head. See figure 3A.
c. Inspect strainer for damage or excessive clogging:
• Replace or Gently rinse strainer under running
water to thoroughly clean it
d. Use a mirror to inspect inside of pump for contami-
nation. If hardened debris is present and interferes
with filter seating, carefully remove it with dental
pick without scratching inside of the pump. Use
care not to drop debris into pump.
e. Reinstall strainer and acorn nut, tighten to 75 in-
lbs.(8.5N-m) of torque. Hold pump head to apply
counter-torque when loosening strainers 7/8 acorn
nut.
f. Wipe dry all areas wetted by coolant. Dispose of
towels in an environmentally responsible manner.
Add coolant:
• Add 2 Gal. ( 7.6 ltrs.) of coolant, either the recom-
mendations off the water cooled accessory or if
none, see the design specification summary listed in
this manual.
ADDITIONAL SERVICE NOTES:
• Always use a back-up wrench on pump head when
loosening or tightening pump fittings.
• Never run the pump dry. Always use a recommend-
ed coolant, otherwise pump damage may result.
• Flush coolant from system and replace with
fresh, recommended coolant at least once a
year. More frequent flushing may be necessary,
depending upon the user’s particular system or
its usage, especially if it is prone to clogging
from biological growth in the coolant.
UNDER-COOLER CART