Lincoln Electric COOL ARC IM911 - Manual (Page 16)

D-1 MAINTENANCE D-1
ROUTINE MAINTENANCE
Remove accumulated dust and dirt from the internal
components of the cooler by blowing it out with a low-
pressure air hose or removing the dust and dirt with a
vacuum hose.
PERIODIC MAINTENANCE
In dirty or dusty environments or if biological growth
occurs in the coolant, it may be necessary to flush the
coolant reservoir. Drain the old coolant, rinse the
inside of the reservoir and circulate rinsing solution
through the coolant system. Add new coolant when
cleaning is finished. It is recommended to flush the
coolant at least once a year. A cooling system free
from debris offers increased cooling efficiency and
longer pump and torch life. See the Coolant
Treatment Recommendation in this “Maintenance
Section”.
NOTE: Pure solutions and mixtures of, or materials
(i.e. towels wetted) with ethylene glycol are toxic to
humans and animals. Special precautions should be
taken when discarding toxic material, do not pour this-
mixture down any drain. Contact the local EPA office
for responsible disposal methods or for recycling infor-
mation
PUMP MAINTENANCE
The pump head has a "built in" strainer on the inlet side of
the pump. It is recommended to clean or replace the
pumps inlet strainer at least once a year. (See Above):
• Drain the coolant reservoir and all coolant lines. Dispose
of the coolant properly as specified in NOTE above.
• Hold the pump head firmly to apply a counter-torque when
loosing the strainer's 7/8" (22 mm) acorn nut located on the
bottom. Do not confuse with 3/4" (19 mm) acorn nut. Remove
nut and slide inlet strainer down and out from the pump head.
• Gently rinse the strainer under running water to thor-
oughly clean it.
• Use a mirror to inspect the inside of the pump for
contamination. Carefully remove hardened debris
with a dental pick if necessary, without scratching
the inside of the pump.
• Reinstall the strainer and 7/8 (22 mm) acorn nut, tight-
ening with 75 +/- 15 in-lbs. of torque. Wipe dry all
area wetted with coolant. Dispose of coolant soaked
towels properly as specified above.
• For a more in depth procedure, See Section D-2,
“Pump Inlet Strainer”.
PUMP MOTOR
The COOL ARC® 40 is rated for continuous opera-
tion. It is recommended to re-oil the pump motor
bearings once a year as follows:
• Remove the plastic plugs located on the top of both
the inboard and outboard bearing end-caps.
• Re-oil each bearing with 30-35 drops of SAE 20 oil
then reinstall both plugs.
HEAT EXCHANGER
To maintain maximum cooler efficiency, the heat
exchanger should be kept free of dust and dirt build-
up. Clean the heat exchanger periodically using a vac-
uum hose or a low-pressure air line. Avoid placing the
unit near a flux hopper or a flux waste container. A
clean heat exchanger offers better cooling perfor-
mance and longer product life. In extremely dirty envi-
ronments, it may be necessary to remove the heat
exchanger completely from the cooler and clean the
fins with soap and water. Use care to avoid damaging
the fins.
RESERVOIR COOLANT LEVEL
The reservoir volume should be checked daily before
using the cooler. Remove the reservoir fill cap and
check the coolant level. The reservoir is full when the
coolant level is just below the reservoir fill opening
with the unit in the upright position. Keep the reservoir
full, especially after disconnecting the water lines or
changing the accessory being cooled.
COOL ARC® 40
ELECTRIC SHOCK can kill.
• Disconnect input power by
removing plug from receptacle
before working inside Cooler.
• Do not operate with covers
removed.
• Use only grounded receptacle.
• Do not remove the power cord ground prong.
• Do not touch electrically “hot” parts inside
Cooler.
• Have qualified personnel do the installation,
maintenance and troubleshooting work.
See additional warning information at the
front of this operatorʼs manual.
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WARNING
SAFETY PRECAUTIONS