Maintenance; Routine Maintenance; Pump Motor Maintenance; Periodic Maintenance - Lincoln Electric Cool Wave 20S Operator's Manual

COOL WAVE™ 20S

MAINTENANCE

Safety Precautions
WARNING
ELECTRIC SHOCK can kill.
• Observe all Safety Guidelines detailed
throughout this manual. Be sure to
disconnect the Cool Wave
and communication cables before
performing any maintenance procedures.
General 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 recommended
coolant, otherwise pump damage may result. Dispose of
coolant and any coolant soaked items properly.
See additional warning information throughout
this Operator's Manual

ROUTINE MAINTENANCE

The reservoir volume should be checked regularly. The system will
indicate a low liquid level because of the float switch, but for
maximum cooling it is recommended to keep the reservoir full.
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.
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.
To maintain maximum cooler efficiency, the heat exchanger
should be kept free of dust and dirt build-up. Avoid placing the
unit near a flux hopper or a flux waste container. A clean heat
exchanger offers better cooling performance 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.

PUMP MOTOR MAINTENANCE

The Cool Wave™ 20S 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
reinstall both plugs.
™ 20S power

PERIODIC MAINTENANCE

The torch coolant and particulate filter should be replaced every 6
months. The pump strainer should also be cleaned before refilling
the coolant.
Replacing coolant and filter cartridge:
1. Remove power from the system
2. Remove power/communication cables from rear of cooler
3. Remove 2 screws from the front of the cooler and slide the
drawer out of the cabinet
4. Remove and dispose of the old coolant out of the reservoir
- Use clean siphoning equipment or carefully tip the drawer
forward to remove coolant
5. Remove the coolant supply hose from the front of the cooler
and use compressed air to force the coolant through the
hoses/welding torch and back into the reservoir
6. Dump and dispose of the remaining coolant from the reservoir
7. Loosen two nuts holding filter housing bracket to rear of
drawer
8. Unscrew the filter housing to expose the element
9. Replace filter element, reassemble filter housing, and reattach
to drawer
10. Clean pump strainer:
- Hold the pump head firmly and loosen the strainer's 7/8"
acorn nut located on the bottom of the pump. 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.
- Reinstall the strainer and 7/8 acorn nut, tightening with 75+/-
15 in-lbs. of torque.
11. Wipe dry all areas wetted with coolant. Dispose of coolant
soaked towels properly.
12. Slide drawer back into cabinet, secure drawer to cabinet,
reattach coolant supply hose, fill reservoir with new coolant,
and reattach power/communication cables to the rear of the
cooler.
13. Power up the Power Wave system and perform cooler
priming procedure while topping off coolant.
CAUTION
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 disposal methods or for
recycling information
D-1
MAINTENANCE