Service The Pump Inlet Strainer; Additional Service Notes - Lincoln Electric COOL ARC 55 Operator's Manual

COOL ARC ® 55 & COOL ARC
Removing Coolant:
a. Drain coolant from the reservoir using clean siphoning
equipment
b. Coolant level should be drained below the strainer's pressure
fitting:
•
This prevents coolant from streaming out of unit when
strainer nut is removed
SERVICE THE PUMP'S INLET STRAINER:
a. Place absorbent towels underneath pump head to prevent
stray coolant from wetting cooler's electrical components.
b. See figure D.1. Hold pump head to apply countertorque when
loosening strainer's 7/8 acorn nut. Do not confuse with 3/4
acorn nut. Remove nut and slide inlet strainer down and out
from pump head.
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 contamination. 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, tightening with 75±15 in.-lbs.
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.
® 55 ALUMINUM WATER COOLER
FIGURE D.1
Add coolant:
a. Add 2.375 gallons of coolant, either the recommendations off
the water cooled accessory or if none, see the design speci-
fication summary listed in this manual.

ADDITIONAL SERVICE NOTES:

1. Always use a back-up wrench on pump head when loosening
or tightening pump fittings.
2. Never run the pump dry. Always use a recommended coolant,
otherwise pump damage may result.
3. 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.
D-3
MAINTENANCE