Lincoln Electric IM10117 COOL ARC 55 WATER COOLER - Manual (Page 15)

D-1 MAINTENANCE D-1
ROUTINE MAINTENANCE
Remove accumulated dust and dirt from the internal compo-
nents 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 circu-
late 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 “Maintenace Section”.
NOTE: Pure solutions, 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 respon-
sible disposal 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 “Maintenace Section”,
“Pump Inlet Strainer”.
PUMP MOTOR
The COOL ARC ® 55 is rated for continuous operation. It is rec-
ommended 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. Keep the reservoir full, especially after
disconnecting the water lines or changing the accessory being
cooled.
COOL ARC ® 55
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 maintenance 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.
• Disconnect input power by removing plug from
receptacle before working inside Cooler.
• Do not touch electrically “hot” parts inside Cooler.
• Have qualified personnel do the installation, mainte-
nance and troubleshooting work.
• Unplug the cooler before performing general mainte-
nance.
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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 Cooler from the
Power Source before performing any maintenance
procedures.
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WARNING
SAFETY PRECAUTIONS