C-4

C-4

ACCESSORIES

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G3503-[ ] COOLER PERIODIC MAINTENANCE

1.Preparation:

Always switch off the Power Wave machine power.

Always disconnect the Power Wave machine from service input power.

Do not remove the pump relief valves' 3/4 in. acorn hex nut or attempt to adjust the relief valve setting.

2.Remove the G3503-[ ] cooler from the Power Wave machine.

8.Flush coolant from the system and replace with fresh, recommended coolant at least once a year. More frequent flushing may be necessary, depend- ing upon a user’s particular system or its usage.

NOTE: Never run the pump dry. Always use a recom- mended coolant, otherwise pump damage may result.

9.Reinstall the G3503-[ ] cooler into the Power Wave machine.

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3.Clean the pump’s inlet strainer:

Drain the reservoir of coolant and dispose of it in an environmentally responsible manner (see Recommended Coolants).

Place absorbent towels underneath pump head.

Hold pump head to apply countertorque when loosening strainer’s 7/8 acorn nut. Do not con- fuse with 3/4 acorn nut. Remove nut and slide inlet strainer down and out from pump head.

Gently rinse strainer under running water to thoroughly clean it.

Use the mirror to inspect inside of pump for contamination. Carefully remove hardened debris with dental pick if necessary, without scratching inside of the pump.

Reinstall strainer and acorn nut, tightening with 75±15 in.-lbs. of torque. Wipe dry all areas wet- ted by coolant. Dispose of towels in an envi- ronmentally responsible manner (see Recommended Coolants).

4.Gently rinse the reservoir’s strainer under running water to thoroughly clean it.

5.Remove fan shroud and inspect hoses and electrical harnesses for kinking or damage (cut, abrasion, swelling, etc.). Replace if necessary.

6.Remove accumulated dust from cooler, especially from the motor and heat exchanger, by blowing it off with shop air or vacuuming it out.

The heat exchanger fins are sharp but can be easily bent. Treat them with care to avoid per- sonal injury and damaging them.

Remove the cooler from the machine for a more thorough cleaning job.

7.Motor lubrication is recommended once a year:

Remove plug over lube port at top of motor near fan end.

Add 20 drops of electric motor or SAE 10 oil then reinstall plug.

G3503-[ ] COOLER SERVICE

1.Preparation:

Always switch off the Power Wave machine power.

Always disconnect the Power Wave machine from service input power.

Do not remove the pump relief valves' 3/4 in. acorn hex nut or attempt to adjust the relief valve setting.

2.Remove the G3503-[ ] cooler from the Power Wave machine whenever:

replacing major cooler components (i.e. pump, motor, heat exchanger, etc.).

replacing hoses and electrical harnesses that are kinked or damaged (cut, abraded, deterio- rated or swollen, etc.).

investigating suspect coolant leakage.

3.Pump replacement:

a.Drain the reservoir of coolant and dispose of it in an environmentally responsible manner (see Recommended Coolants).

b.Remove fan shroud.

c.Place absorbent towels underneath pump head and wherever coolant system is opened.

d.Carefully pull pump inlet hose and its elbow from reservoir (bottom).

e.Loosen pump outlet hose clamp at QD then carefully remove from fitting.

f.Disconnect v-band clamp from motor and remove pump:

Do not drop or lose drive coupling between pump and motor.

Do not discard old pump. Remove both fit- tings, Keep v-clamp, Seal old pump in a waterproof bag, Package into protective con- tainer, and Return to nearest Lincoln Electric FSS center.

POWER WAVE 450

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Lincoln Electric SVM112-B service manual G3503- Cooler Periodic Maintenance, G3503- Cooler Service