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A complete Parts List is available at www.MillerWelds.com
OM-624 Page 9
SECTION 6
−
MAINTENANCE & TROUBLESHOOTING
6-1. Routine Maintenance
!
Turn Off all power and unplug unit before maintaining.
1 Month
Blow Out Heat
Exchanger Fins
NOTICE
−
Clean coolant strainer. Severe condi-
tions may require more frequent cleaning (contin-
uous use, high/low temperatures, dirty environ-
ment, etc.). Failure to properly clean coolant
strainer voids pump warranty.
6 Months
Replace
Cracked
Hoses
Replace
Unreadable
Labels
Change
Coolant (If
Using Water)
12 Months
Change
Coolant (If
Using Miller
Coolant)
6-2. Coolant Maintenance
1
15/16 in.
Tools Needed:
160 559-A
!
Disconnect cooler plug from
welding power source receptacle
before maintaining.
!
Dispose of used coolant accord-
ing to national, state, and local
codes. Do not pour down drain.
1
Coolant Filter
Remove nut to remove filter. Clean filter
and reinstall.
Changing Coolant
Drain coolant by tipping unit forward. Fill
with clean water and run for 10 minutes.
Drain and refill.
NOTICE
−
If replacing hoses, use hoses
compatible with ethylene glycol, such as
Buna-n, Neoprene, or Hypalon.
Oxy-acetylene hoses are not compati-
ble with any product containing ethylene
glycol.
