Instruction manual

Maximum Series Portable Chiller : Air & Water-Cooled : M1 Series Instrument
Page: 54
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: [phone]
Service Department Fax: [phone]
Email: [e-mail]
B. To begin, remove the piping to the “water in” port at the evaporator.
Remove any solids that have collected at this point. Then back
ushtheevaporatortoremoveanysolidsthatmaybetrapped
betweentheplates(seebackushprocedurebelow).Ifthereare
mineral deposits adhered to the plates, the evaporator must be back
ushedwithamildacidsolution(5%phosphoricor5%oxalicacidis
recommended.) After cleaning rinse with clear water before returning
to service. Continue with step C on the next page.
C. Back ushing procedure:
1. Turn off all power to the machine. For chillers with a
reservoir tank, drain the tank to below the evaporator outlet.
For chillers without a reservoir tank, drain total unit.
2. Connect a water supply hose to the evaporator water outlet.
If acid cleaning, connect the discharge hose from the acid
pump to the evaporator outlet port.
3. Connect a hose to the evaporator water supply port and to
an appropriate containment vessel. If acid cleaning, connect
the evaporator water inlet port to an acid solution reservoir
tank.Disposeofallbackushuidaccordingtolocalcodes.
4. Thecleaninguidsourceshouldhaveatleast20psi
available. If acid cleaning, follow the instructions supplied
with the acid solution carefully.
5. When the procedure is complete, reinstall all water lines to
original factory orientation. Restart the unit and check for
proper operation.
6. Note: This procedure is not normal maintenance.
Maintainingproperwaterqualityandltrationwillminimize
theneedtobackushtheevaporator.
BRAZED PLATE HEAT EXCHANGER
(EVAPORATOR)
FREON OUT
FREON IN
ORIGINAL WATER OUT PORT
BACKFLUSH WATER IN PORT
(SUPPLY BACKFLUSHING WATER
FLOW TO THIS PORT)
ORIGINAL WATER IN PORT
BACKFLUSH WATER OUT PORT
(ROUTE WATER TO PROPER
SEWER OR DRAIN CONTAINER)