Welbilt Indigo NXT IF1400C Operating manual

Preventative
Maintenance
Subject: IF1400C/IF1800C/IF2100C Indigo NXT
Ice Machines - Dual Evaporator Models
DETAILED DESCALING AND SANITIZING PROCEDURES
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Document Number: MII_SB_0034 4/20
1. Remove front panel.
Use a Phillips screwdriver to
loosen the screw(s) securing
the door. Do not remove
screw(s) completely; they
are secured to prevent loss.
2. Turn ice machine off.
After ice has fallen from
the evaporator, turn the ice
machine OFF by pressing
the power button.
3. Disconnect main
power at the service
disconnect or breaker.
nWARNING
Do not begin cleaning
other parts of the ice
machine until line voltage is
disconnected from the ice
machine and if applicable
dispenser.
4. Empty ice bin.
Use an ice scoop to remove
all ice from the storage bin
or dispenser.
5. Remove splash shields
(2).
Grasp the top center of
splash shields. Lift up and
then out.
6. Remove the ice
thickness probes (2).
Compress the hinge pin on
the top of the ice thickness
probe.
Pivot the ice thickness probe
to disengage one pin then
the other.
The ice thickness probe
can be cleaned at this point
without complete removal.
If complete removal is
desired, disconnect the ice
thickness control wiring
from the control board.
Manitowoc recommends a Factory Authorized Service company or Distributor Authorized Service Dealer perform thorough
preventative maintenance prior to restoring service of the Manitowoc ice machine, storage bin or dispenser. Section 4
(Maintenance) of the Installation, Operation and Maintenance manual should be followed to ensure proper cleaning and
sanitizing steps are completed.
Water system components including the water inlet valve, water pump and dump valve may require removal for inspection
or replacement depending on the potable water quality and the length of time the components had no use. Water cooled ice
machines may require the condenser be cleaned and the refrigeration water regulating valve evaluated for proper performance.
This is also a good time to replace water filtration, replenish AuCS chemical and replace the Luminice bulb if these Manitowoc
accessories are used.
MANITOWOC ICE
2110 SOUTH 26TH STREET,MANITOWOC,WI 54220
8005455720
WWW.MANITOWOCICE.COM

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Document Number: MII_SB_0034 4/20
Subject: Indigo NXT Detailed Descaling and Sanitizing Procedures
7. Remove the water
trough shield.
Grasp the water trough
shield in the center and the
left end.
Flex the water trough shield
in the center and pull the
left end forward until clear
of the side wall. Repeat for
the right end.
Pull water trough shield
forward to remove.
8. Remove the water
distribution tubes (2).
Loosen the two outer
screws (do not remove
screws completely; they are
retained to prevent loss)
of the left and right water
distribution tubes. Pull
forward on each distribution
tube to release from slip
joint. Remove the water
distribution tubes.
Disassemble each
distribution tube by
loosening the two (2)
middle thumbscrews and
dividing the distribution
tube into two pieces.
9. Remove Ice dampers
(2).
Disengage the front and rear
pins of the left damper and
right damper.
10. Remove the water
pump and water level
probe assembly.
The water pump and water
level probe are removed
from the front right side
of the machine. Pull up on
the water pump and water
level probe assembly to
disengage.
The water pump and water
level probe can be descaled
and sanitized at this point
without complete removal.
If complete removal is
desired, disconnect at the
molex connectors.
11. Remove water trough.
Once the water pump
and water level probe are
removed; slide the water
trough forward-out of the
ice machine.
nWARNING
Wear rubber gloves and safety goggles (and/or face shield)
when handling ice machine cleaner / descaler or sanitizer.

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Document Number: MII_SB_0034 4/20
Subject: Indigo NXT Detailed Descaling and Sanitizing Procedures
Cleaner / Descaler (9405463)
and Sanitizer (9405653)
Usage
Important
Ice machine cleaner /
descaler is used to
remove lime scale and
mineral deposits. Ice
machine cleaner / descaler
should be used every
six months, although in
cases of extremely hard
water conditions it may
be necessary to descale
more often. For the
range of water hardness
allowed for potable water
standards, it should not
be necessary to descale
more frequently than every
two months. Use of an
approved filtration system
with a polyphosphate
scale inhibitor is highly
recommended for all ice
machine installations and
will significantly reduce
the need to descale in hard
water applications.
Ice machine sanitizer
disinfects and removes
algae and slime. Sanitizer
must be used a minimum of
once every six months.
,CAUTION
Do not immerse the water
pump motor or electrical
connector in liquids. Only
soak the water pump
impeller and impeller
housing. Do not immerse
above the red line on the
graphic.
Notice
Electrical connectors must never be exposed to any
liquids.
12. Remove scale deposits
from removed parts.
Mix 16 oz Manitowoc ice
machine cleaner / descaler
(9405463) with one gallon of
potable water in a three-
compartment sink.
Place the plastic parts in the
solution and allow to soak
for 10-15 minutes. Use a
soft bristle brush on heavy
scale or mineral buildup as
required.
13. Clean scale deposits
from surface areas of
ice machine.
Use a clean towel or sponge
soaked in cleaner / descaler
solution to wipe ice machine
surfaces, including the sides
walls, base (area above
water trough), and the bin
or dispenser.
14. Rinse Surface Areas of
Ice Machine.
Use a clean towel or sponge
soaked in potable water to
wipe ice machine surfaces,
including the sides walls,
base (area above water
trough), and the bin or
dispenser.
,CAUTION
Do not soak the water pump
motor in rinse water or
sanitizer solution. Be sure
to only rinse/soak the water
pump impeller and impeller
housing. Do not immerse
above the red line on the
graphic.
Notice
Electrical connectors must never be exposed to any
liquids.

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Document Number: MII_SB_0034 4/20
Subject: Indigo NXT Detailed Descaling and Sanitizing Procedures
15. Rinse and sanitize
plastic parts.
Mix two ounces of ice
machine sanitizer (9405653)
with three gallons of
potable water in a three-
compartment sink.
Add five gallons of clear
potable water to third sink
compartment. Remove
plastic parts from cleaner
/ descaler solution & rinse
in clear potable water.
Place the plastic parts in
the sanitizer solution and
allow to soak for at least one
minute.
16. Sanitize surface areas
of ice machine.
Use a clean sanitizer-soaked
towel to sanitize ice machine
surfaces, including the side
walls, base (area above
water trough), and the bin
or dispenser. Spray surfaces
with sanitizer solution and
wipe down. Manitowoc
sanitizer is classified as a no
rinse sanitizer - Do not rinse
sanitized surfaces.
Notice
When re-installing the water level probe, ensure the
rubber gasket is sealed against the base of the ice
machine and that any electrical connectors or wires
remain free from moisture.
17. Reinstall plastic
evaporator parts.
Return the parts to the ice
machine and reassemble.
(Perform Steps 5 to 11 in
reverse order).
18. Restore power to the
ice machine.
Restore power to the ice
machine (and dispenser if
applicable) at the circuit
breaker.
19. Press CLEAN button.
Follow the screen prompts
to start the clean cycle.
Wait until the prompt to
add cleaner is displayed
(approximately 2 minutes)
then continue with next
step.
20. Add Manitowoc
cleaner / descaler
(9405463) to water
trough.
Add 9 ounces of cleaner
/ descaler by pouring
between the evaporator and
water curtain. The bottle
is marked with 2 oz (60ml)
graduations.
21. Allow clean cycle to
run.
The ice machine will
automatically run through a
wash cycle and several rinse
cycles. The entire cycle lasts
approximately 30 minutes.
Countdown clock will let
you know duration and time
remaining.
22. Press the CLEAN
button.
Follow the screen prompts
to start the sanitize cycle.
Wait until the prompt to
add sanitizer is displayed
(approximately 2 minutes)
then continue with next
step.

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Document Number: MII_SB_0034 4/20
Subject: Indigo NXT Detailed Descaling and Sanitizing Procedures
23. Add Manitowoc
sanitizer (9405653) to
the water trough.
Add 12 ounces (355ml)
of sanitizer by pouring
between the evaporator and
water curtain. The bottle
is marked with 2 oz (60ml)
graduations.
24. Press the POWER
button.
After the sanitizing cycle is
complete, press the power
button to return to making
ice.
25. Reinstall front panel
and tighten screws.
Subject: Indigo NXT Detailed Descaling and Sanitizing Procedures