Lincoln Electric IM696 COOL ARC 40 STAND ALONE - Manual (Page 15)

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 it 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 “Section D-2”.
NOTE: Pure solutions and mixtures of, or materials
(i.e. towels wetted) with ethylene glycol are toxic to
humans and animals. They must not be haphazardly
discarded, especially by pouring liquids down the
drain. Contact the local EPA office for responsible dis-
posal methods or for recycling information
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 pump's
inlet strainer at least once a year. (See Above):
• Drain the coolant reservoir and all coolant lines. Dispose of
the coolant properly as specified above.
• Hold the pump head firmly to apply a counter-torque when
loosing the strainer's 7/8" acorn nut located on the bottom. Do
not confuse with 3/4" acorn nut. Remove nut and slide inlet
strainer down and out from the pump head.
• Gently rinse the strainer under running water to thoroughly
clean it.
• Use a mirror to inspect the inside of the pump for contamina-
tion. Carefully remove hardened debris with a dental pick if
necessary, without scratching the inside of the pump.
• Reinstall the strainer and 7/8 acorn nut, tightening 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
Filter”.
PUMP MOTOR
The COOL ARC ® 40 is rated for continuous operation. 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 rein-
stall 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 vacuum 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 environments,
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 posi-
tion. Keep the reservoir full, especially after discon-
necting the water lines or changing the accessory
being cooled.
COOL ARC ® 40
Have qualified personnel do the maintenance
work. In some cases, it may be necessary to
remove safety guards to perform required
maintenance. Remove guards only when
necessary and replace them when the mainte-
nance requiring their removal is complete.
Always use the greatest care when working near
moving parts.
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ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground
• Always wear dry insulating gloves.
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MOVING PARTS can injure.
• Do not operate with doors open or
guards off.
• Keep away from moving parts.
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Observe all Safety Guidelines detailed throughout
this manual. Be sure to disconnect the Under-
Cooler cart from the Power Source before
performing any maintenance procedures.
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WARNING
SAFETY PRECAUTIONS