D-2
MAINTENANCE
D-2
COOLANT TREATMENT
RECOMMENDATION
Thisprocedureisintendedtoprovideameansofreducingthe
objectionableamountoffungalandbacterialcontaminationthat
has occurred in COOL ARC
®
40 water coolers and cooling
systems.
Additive:
Therecommendedadditivecanbepurchasedatlocal
pool supply stores. An example is "Maintain Pool Pro
30%non-FoamAlgaecide".
Limitations:
•Thisadditiveshouldbeusedwithfreshcoolantscon-
tainingonlypurewater.
•This additive should not be used with coolants con-
taininganyothersubstance,includingantifreezesub-
stances.
•no other additives shall be used with the specified
coolantthathasbeentreatedwiththerecommended
additive.
•Thisprocedureisnopermanentsubstituteforaperi-
odicmaintenancescheduleforthespecifiedcoolers
•A 1 quart bottle of additive is sufficient to disinfect
andtreatabout720coolers.
• Check with the manufacturer of your guns or
torches to be sure that this procedure is compati-
ble with your equipment.
Prepare the disinfectant:
Make a quantity of only what is needed to avoid an
excessBulkpreparation(forcoolersservicedinquan-
tity):
8.775liters(2.325gals.)ofpure,freshwaterpercool-
er 1.625 ml of additive per cooler. Example: for 100
coolers, add 162.5 ml to 232.5 gals. of pure fresh
waterPour7.55liters(2.0gals.)ofdisinfectantintothe
emptyreservoir.Recapthereservoir,tapeovertheair
vent in the cap, roll disinfectant around the inside the
reservoirtothoroughlycoatallofitssurfaces.Remove
thetapefromthereservoircap.Primethecoolingsys-
tembypositioningcoolerhorizontallyandcirculatedis-
infectant through it for 10 to 15 minutes. Drain disin-
fectant from the cooling system. Do not reuse this
solution.Addnew,freshcoolanttothecoolingsystem.
Add1.225liters(0.325gals.)offreshdisinfectanttothe
systembypouringitintothereservoir,thenreducethe
concentrationtothenominal30ppm:
Addthebalance6.325liters(1.675gals.)offresh,pure
water to the reservoir to create the treated coolant
concentration.Primethecoolingsystem.
Check coolant level. Add more fresh, pure water if
required, without adding more than 0.475 liters(0.125
gal.)ofpurewatertopreventdilutingthecoolantaddi-
tive.
PUMP INLET STRAINER
Poor cooler performance can usually be traced to a
partially or completely blocked pump inlet strainer.
This is a user-serviceable item and can be cleaned
and reused, or replaced. Continued pump operation
withablockedstrainercancause:
•Voidingofcoolerservicewarranty
•Cavitationdamagetothepumphead’sinletareas
•Weldingaccessorydamagefromoverheatingdueto
insufficientcoolantflowrate.
Aneworproperlycleanedpumpinletstrainershould
restorethecooler’sperformance.
For additional service and periodic maintenance
detailsandforrecommendedcoolants,followtherec-
ommendationslistedbelow.
Procedure and Preparation:
• Always switch off the COOL ARC
®
40 machine
power
• Always disconnect the COOL ARC
®
40 machine
from service input power.
• Always allow the coolant in the system to cool
enough to avoid burn injuries.
• Avoid contact with contaminated coolant. Wear
waterproof gloves and protective eye wear.
• Do not remove the pump relief valve’s 3/4 in.
acorn hex nut or attempt to adjust the relief valve
setting.
------------------------------------------------------------------------
INSPECT CONDITION OF COOLANT
Ifcoolantiscontaminatedorold:
•Drain the system of coolant and dispose of it in an
environmentallyresponsiblemanner.
•Flushsystemofoldcoolant.
•Fill with fresh tap or distilled water, run for ten min-
utes,anddrain.
•Proceedtoaddingcoolant..
Ifcoolantiscleanandfresh:
•If clean, dedicated coolant handling equipment,
including a clean siphon pump and a clean holding
tank are available then proceed to servicing the
PumpInletStrainer.
COOL ARC
®
40
WARNING
