Manitowoc H200 HR-0200A, HR-0201W, HD-0202A, HD-0203W, HY-0204A, HY-0205W, E400 ER-0400A, ER-0401W, ED-0402A, ED-0403W, EY-0404A, EY-0405W, ER-0490N, ED-0492N, EY-0494N ice machine User guide

Manitowoc
ICE MACHINES
Thank you for selecting a Manitowoc Ice Machine, the dependability leader in ice making
equipment and related products. With proper care and maintenance, your new Manitowoc. Ice
Machine will provide you with many years of reliable and economic performance.
This product qualifies for the following listings:
We reserve the right to make product improvements at any time. Specifications and design are subject to change without notice.
Part No. 80-0815-3
12-89
Important
Proper care and maintenance are essential for
maximum ice production and trouble-free operation
of your Manitowoc Ice Machine.
You should read and understand this Use and Care
Guide as it contains valuable care and
maintenance information.
If you encounter problems not covered by this
guide, please contact your local Manitowoc dealer
or distributor for service information.
Your Use and Care Guide covers the following
model numbers:
H200 SERIES E400 SERIES
HR-0200A ER-0400A
HR-0201W ER-0401W
HD-0202A ED-0402A
HD-0203W ED-0403W
HY-0204A EY-0404A
HY-0205W EY-0405W
E400 SERIES WITH REMOTE CONDENSER
ER-0490N
ED-0492N
EY-0494N
Table of Contents
SECTION 1 - GENERAL INFORMATION Interior Cleaning ................ 11
Model/Serial Numbers Location ........ 3 Removal of Parts for Cleaning ......... 11
Owner Warranty Registration Card ........ 4 Remove Water Pump .......... . | 11
About Your Warranty ....... .... ... 4 Remove Float Valve ........ .... | 12
Remove Distribution Tube ........ 12
SECTION 2 - ABOUT YOUR ICE MACHINE Disassemble Distribution Tube ...... 12
Component Location and Identification .. 5 Remove Ice Bridge Thickness Probe 13
Sequence of Operation ............ 6 Remove Water Trough ........... 13
Freeze Mode ................. ....6 Cleaning Procedures ............ 13
Harvest Mode .................. 6 Clean the Evaporator Surface ...... . 14
Automatic Stop and Start ......... ee. 6 Sanitizing ...................... 14
Operational Checks ................ 7 Checking and Cleaning the
Water Level Check ................ 7 Water Dump Valve .............. . 15
Water Curtain Check ............. . 7 Operation Check ............... 0 15
Bin Switch Check ................ 8 Remove Water Dump Valve ........... 15
Ice Bridge Thickness Check .............. 8 Disassemble Water Dump Valve ........ 15
Cleaning Water Dump Valve ........... 16
SECTION 3 - MAINTENANCE : Water Filtration ................. 0 16
Maintenance Guidelines ............. 9 Replacement Procedure .......... 16
General Ice Machine Inspection .......... 10 Removal from Service/Winterization ....... 17
Exterior Cleaning ................. E. 10
Cleaning the Condenser ................ 10 SECTION 4 - BEFORE CALLING FOR
Air-Cooled Condenser ................ 10 SERVICE
Water-Cooled Condenser . ......... . 11 Checklist .................... . 18, 19
MANITOWOC ICE, INC.
2110 South 26th Street, P.O. Box 1720, Manitowoc, WI 54221-1720 U.S.A.
Telephone 920-682-0161
FAX 920-683-7879
SECTION 1
GENERAL INFORMATION
Model/Serial Numbers
Location
Record the model and serial numbers of your ice The model and serial numbers are listed on the
machine and bin or dispenser in the space provided OWNER WARRANTY REGISTRATION CARD, and
below for your convenience. These numbers are on the MODEL/SERIAL NUMBERS DECAL affixed
required when requesting information from your local to the inside of the ice machine and on the back
Manitowoc distributor, service representative, or panel of the bin, Figure 1.
Manitowoc Ice, Inc.
1C-002-OW IC-023-OW
MODEL/SERIAL
NUMBERS DECAL
(ICE MACHINE) MODEL/SERIAL
y NUMBERS DECAL
7B (REMOTE CONDENSER)
| MODEL/SERIAL
— NUMBERS DECAL
(BIN)
IC-001-0W
FIGURE 1 MODEL/SERIAL NUMBER LOCATION
ICE MACHINE — BIN OR DISPENSER REMOTE CONDENSER
MODEL NUMBER:
SERIAL NUMBER:
OWNER WARRANTY
REGISTRATION CARD
The packet containing this guide also includes war-
ranty information. Warranty coverage begins the day
your new ice machine is installed.
IMPORTANT
To validate the installation date, fill in the OWNER
WARRANTY REGISTRATION CARD and mail it as
soon as possible.
If your card is not returned, Manitowoc will use the
date of sale to the Manitowoc Distributor as the first
day of warranty coverage for your new ice machine.
About Your Warranty
For your convenience, the warranty statement is dupli-
cated on the back cover of this guide.
For a detailed explanation of your warranty, we have
compiled a list of the most commonly asked questions
regarding warranty coverage.
Contact your local Manitowoc representative or our
Wisconsin headquarters for further warranty informa-
tion.
WARRANTY COVERAGE
(Effective for Ice Machines Installed after
January 1, 1991)
Parts
1. Your ice machine is warranted against defects in
materials and workmanship under normal use and
service for three (3) years from the date of the
original installation. lt is important to send in your
warranty registration card so Manitowoc can begin
your warranty on the installation date.
2. An additional two (2) years (five years total) war-
ranty is provided on evaporator and compressor
from the date of original installation.
Labor
Labor allowance to repair or replace defective compo-
nents is for three (3) years from the date of original in-
stallation.
Exclusions from Warranty Coverage
The following items are not included in the warranty
coverage of your ice machine.
1. Normal maintenance, adjustments and cleaning
as outlined in this manual.
2. Repairs due to unauthorized modifications to the
Ice machine or the use of nonapproved parts with-
out written approval from Manitowoc Ice, Inc.
3. Damage from improper installation as outlined in
the Installation Instructions, improper electrical
supply, water supply or drainage; flood, storms, or
other acts of God.
4. Premium labor rates due to holidays, overtime,
etc. Travel time, flat rate service call charges, mile-
age and miscellaneous tools and material charges
not listed on the payment schedule are excluded
as well as additional labor charges resulting from
inaccessibility of the ice machine.
5. Parts or assemblies subjected to misuse, abuse,
neglect or accidents.
6. When the ice machine has been installed, cleaned
and/or maintained inconsistent with the technical
instructions provided in this Owner/Operator Use
and Care Guide and the Installation Manual.
Authorized Warranty Service
To comply with the provisions of the warranty a refrig-
eration service company qualified and authorized by
your Manitowoc distributor or a Contracted Service
Representative must perform the warranty repair.
NOTE
If the dealer you purchased the ice machine from IS
NOT authorized to perform warranty service, con-
tact your Manitowoc distributor or our Wisconsin
headquarters for the name of the nearest author-
ized service representative.
Service Calls
Service for your ice machine should be applied if, after
the procedures listed in this guide have been imple-
mented, the condition of your ice machine has not im-
proved.
SECTION 2
ABOUT YOUR ICE MACHINE
Component Location and
Identification
IC-003-OW
FRONT VIEW
BIN SWITCH
ACTIVATING PIN
CONDENSER FAN Ё
(Air-Cooled Models) — IH
ICE/OFF/WATER PUMP
SWITCH
LOCATED ON RIGHT
SIDE OF CABINET ON
REMOTE MODELS
DISTRIBUTION TUBE
NL
ICE BRIDGE
THICKNESS PROBE —— HIGH PRESSURE
CUTOUT/MANUAL
RESET
WATER (Water-Cooled Models)
CURTAIN
FLOAT VALVE
WATER PUMP
О ЕМАРОВАТОВ DRAIN TROUGH
\ PLUG
CONDENSER
WATER
REAR VIEW REGULATING
1C-004-OW HOT GAS VALVE
VALVE REMOTE
COUPLINGS
>
BIN
SWITCH
WATER-COOLED
CONSENSER
CONDENSER
WATER DUMP За (Air-Cooled Models) WATER-COOLED
VALVE COMPRESSOR MODELS
DRAIN
/ ) HOSE
= NOTE: Remote models condenser is a separate component located away from the cabinet.
FIGURE 2 COMPONENT LOCATION
Sequence of Operation
FREEZE MODE (FIGURE 3)
When the ICE/OFF/WATER PUMP switch is set at
ICE, the compressor and condenser fan (air-cooled
models) start. On remote models, the compressor
and condenser fan start after a momentary delay.
The water pump will start after approximately 30
seconds. This allows the evaporator to “prechill.”
Water is pumped from the water trough up through
the distribution tube. This directs an even flow of
water down across the front of the evaporator.
Water flows into each individual cube mold,
gradually building ice. The water flows back to the
water trough and is recirculated. The float valve
maintains the proper water level in the trough as
ice is formed.
HARVEST MODE (FIGURE 4)
As ice builds in the evaporator to the proper
thickness, water flowing over the ice comes in
contact with the ice bridge thickness probe. This
initiates the HARVEST mode. The condenser fan
will cycle off. (The condenser fan continues to run
on remote models.) The hot gas solenoid valve
opens diverting hot gas into the evaporator. The
water dump valve opens at the same time, allowing
the water pump to flush mineral deposits from the
water trough out the drain. As the hot gas warms
the evaporator, the ice cubes slide, as a unit, off
the evaporator into the ice storage bin or
dispenser. The falling ice swings the bottom of the
water curtain out, activating a bin switch. The bin
switch de-energizes the hot gas valve and water
dump valve, returning the ice machine to the freeze
mode.
AUTOMATIC STOP AND START
(FIGURE 5)
When the ice storage bin becomes full, the last
harvesting ice cubes do not completely clear the
water curtain, holding it open. The bin switch shuts
the ice machine off until sufficient ice is removed
from the bin allowing ice to clear the water curtain.
On remote models, the ice machine will run
momentarily before shutting off. The return of the
water curtain activates the bin switch, putting the
machine back into the freeze mode.
FIGURE 4 HARVEST MODE
FIGURE 5 AUTOMATIC START/STOP
9
Operational Checks
IMPORTANT: Utilize the Operational Checks when
starting the ice machine after initial installation,
prolonged “out of service” periods, and after
cleaning and sanitizing to ensure proper operation.
Your Manitowoc ice machine is factory operated
and adjusted before shipment. Normally no
adjustments are necessary for new installations.
Adjustments and maintenance as outlined in this
guide are not covered by warranty. To check and
adjust (if necessary), proceed as follows:
Water Level Check (Figure 6)
1. Set ICE/OFF/ WATER PUMP switch at OFF.
Water Curtain Check
(Figure 7)
1. Pull bottom of water curtain away from
evaporator, then release. Curtain should fall
back to evaporator.
|C-006-OW LOOSEN SCREWS AND
RAISE OR LOWER FLOAT
VALVE TO ADJUST
7 WATER LEVEL
0 ON/OFF
AO à)
Ds — AND
N я
FLOAT AN FILTER SCREEN
VALVE TX To
В,
-—
= © Xx
y . ~—
|
| о > a
= Lo 7 O
e
„N
- N 1
— =” `
CORRECT
WATER LEVEL
FLOAT WATER ~ DRAIN
TROUGH PLUG
[C-007-OW
LOOSEN HANGER SCREWS
AND ADJUST HANGERS TO
ELIMINATE SIDE TO SIDE
MOVEMENT
CURTAIN
HANGER
(Lift tabs with
thumbs while
lifting hanger)
WATER
CURTAIN
CURTAIN PIN
FIGURE 6 WATER LEVEL CHECK
2. Remove drain plug from trough and allow
water to drain.
3. Reinstall drain plug on trough and allow
trough to refill to proper level.
The float valve is factory set for proper water
level. If adjustment is necessary, adjust as
follows:
a. Loosen two screws on float valve bracket.
b. Raise or lower float valve assembly, then
tighten screws.
с. If further adjustment is necessary,
carefully bend float arm to achieve correct
level.
FIGURE 7 WATER CURTAIN CHECK
2. Move curtain from side to side. There should
be little or no movement.
The water curtain is factory set and should
require no adjustment. If adjustment is
necessary, adjust as follows:
a. Remove water curtain.
b. Loosen curtain hanger screws (two per
hanger) and slide hangers out to prevent
side to side movement.
c. Retighten curtain hanger screws.
d. Reinstall water curtain.
NOTE: Water curtain pin heads must be positioned
under curtain hanger tabs. Curtain must be
centered on evaporator when reinstalled.
Slowly pull bottom of water curtain away
Bin Switch Check (Figure 8) b. Ÿ water c
from evaporator until bin switch clicks,
1. Pull water curtain away from evaporator until then slowly return curtain toward
ice machine shuts off. evaporator.
| c. If bin switch clicks before water curtain
On remote models, the ice machine will continue to cwiloh activatino po lengthen the bin
run momentarily before shutting off. d. If bin switch clicks too far into evaporator,
shorten the bin switch activating pin.
e. Set ICE/OFF/ WATER PUMP switch at ICE
2. Slowly return curtain to evaporator. Ice
machine should restart as bottom edge of
water curtain passes just inside edge of water
after adjustment is complete.
Ice Bridge Thickness Check
(Figure 9)
Be sure the water curtain is in place to prevent
water from splashing out of water trough.
trough.
The bin switch is factory set and should not
require adjustment. If bin switch adjustment is
necessary, adjust as follows: —.
a. Set ICE/OFF/WATER PUMP switch at
OFF.
Inspect bridge connecting the cubes. The bridge
should be approximately 1/8” thick.
IC-008-OW
TURN PIN CLOCKWISE TO
The ice bridge thickness probe is factory set to
SHORTEN,
COUNTERCLOCKWISE TO
LENGTHEN
maintain 1/8 inch ice bridge thickness. If
adjustment is necessary, adjust as follows:
1. Turn adjustment screw on ice bridge thickness
probe clockwise to increase bridge thickness,
counterclockwise to decrease bridge |
7 thickness. |
WATER
CURTAIN \ LOOSEN
NUT TO IC-009-OW
ADJUST -
ADJUSTING
THEN RETIGHTEN
ACTIVATING
PIN
vr
hy
с
H
i
©
$e, BIN
SWITCH
SCREW N
\
1/8” BRIDGE
4 THICKNESS
FIGURE 9 ICE BRIDGE THICKNESS CHECK
NOTE: Do not turn the adjusting screw more than
1/4 turn at a time. Check the bridge two harvest
-
-
NT
LU
WATER
2
7
7
WATER
CURTAIN
TROUGH
FIGURE 8 BIN SWITCH CHECK
cycles after initial adjustment before adjusting again
(if necessary).
2. Ensure ice bridge thickness probe wires and
bracket do not restrict movement of the probe
2. Disconnect hose from pump outlet. 1C-012-0W
SPRING TOP
3. Loosen two screws holding pump mounting EXTRUSION
bracket to rear bulkhead.
LOCATING
4. Lift pump and bracket assembly off screws.
REMOVE FLOAT VALVE (FIGURE 12)
1. Turn valve splash shield clockwise a full turn
or two, then pull the valve forward off the
mounting bracket.
E à
/ =
TN \
NA x li 3 \ у `
| Tbh DISTRIBUTION
2. Disconnect the water inlet tube from the float o TUBE
valve at the compression fitting. AN
3. Remove filter screen cap.
FIGURE 13 DISTRIBUTION TUBE REMOVAL
C-011:0W | WATER DISASSEMBLE DISTRIBUTION TUBE
N 4— INLET TUBE (FIGURE 14)
| \ И» TO REMOVE NOTE: Disassembly of the distribution tube is not
VALVE | \ usually necessary as normal cleaning of the ice
“OPEN” < machine will clean the tube. The distribution tube
= FLOAT
POSITION > 3 Ч) «+— VALVE should only be disassembled if, after normal
cleaning procedures, there is inadequate water flow
FILTER SCREEN from the distribution tube. (Ensure that any other
AND CAP water problems are eliminated beforehand.)
ar
IN A
| % 1. Heat rubber end plugs on distribution tube in
—
warm water to soften them.
NA
|
TO
REMOVE
ANS
TO REMOVE
2. Remove end plugs and inner distribution tube.
3. Reheat rubber plugs in warm water after
cleaning is complete and reassemble
distribution tube. |
1C-013-OW
END WITHOUT
HOLES
INNER MM
RUBBER END DISTRIBUTION
PLUG TUBE
FIGURE 12 FLOAT VALVE REMOVAL
RUBBER
END
REMOVE DISTRIBUTION TUBE PLUG
(FIGURE 13)
1. Remove distribution tube from the two spring
clips holding it in place. NOTE INNER TUBE
HOLES ARE 180°
Le OPPOSITE OUTER TUBE
2. Disconnect the hose from the distribution tube O HOLES
and from the “T.”
NOTE: To reinstall distribution tube, align locating FIGURE 14 DISTRIBUTION TUBE
pin on top extrusion with hole in distribution tube. DISASSEMBLY
12
NOTE: Position the holes in the inner and outer
tubes 180° opposite each other when
reassembling. The end of the inner distribution tube
without holes must extend from the outer tube
when reassembled to allow for attachment of the
water line from the pump.
REMOVE ICE BRIDGE
THICKNESS PROBE (FIGURE 15)
1. Disconnect wire leads.
2. Compress side of probe at top near hinge pin
and disengage it from the bracket.
IC-014-OW
COMPRESS
HINGE PIN
TO REMOVE
== A F
PA
DISCONNECT N illo: | \
WIRE > ICE
‚ LEADS N BRIDGE
| > THICKNESS PROBE
>
US qe
> Za
(O
A dl
FIGURE 15 ICE BRIDGE THICKNESS
PROBE REMOVAL
REMOVE WATER TROUGH (FIGURE 16)
1. Remove thumb screws. Support trough while
removing thumb screws.
2. Lower right side of trough into bin while
disengaging left side of trough from holding
pegs and remove trough from ice machine.
NOTE: Stacked ice machines: Remove trough from
top ice machine by lifting up on front right side of
trough, then pull out to disengage trough from pegs
on left side of cabinet.
IC-015-OW
1. REMOVE
THUMB SCREWS №
3. REMOVE
2.
LOWER
RIGHT SIDE
OF TROUGH
FIGURE 16 WATER TROUGH REMOVAL
CLEANING PROCEDURES
Ice Machine Cleaner is for removal of lime scale or
other mineral deposits. It is not used for removal of
algae or slime. Refer to Sanitizing for removal of
algae and slime.
A CAUTION
USE ONLY MANITOWOC ICE MACHINE
CLEANER, PART NO. 94-0546-3 IN
RECOMMENDED CONCENTRATION AS
THIS IS COMPATIBLE WITH MATERIALS
USED IN THE MANUFACTURE OF
MANITOWOC ICE MACHINES.
1. Soak parts in a solution of no more than 16
ounces of cleaner to one gallon of warm
water. Use a brush (DO NOT USE A WIRE
BRUSH) or a sponge to clean the parts,
taking care not to damage them.
A CAUTION
DO NOT IMMERSE THE WATER PUMP
MOTOR IN THE CLEANING SOLUTION.
ALSO, USE CARE WHEN CLEANING THE
ICE BRIDGE THICKNESS PROBE SO AS
NOT TO MOVE THE ADJUSTING SCREW.
13
2. Use the cleaning solution and a brush or
sponge to remove scale build-up from the top,
sides and bottom extrusions, the inside of the
ice machine panels, and the entire inside of 11.
the ice bin.
PUMP and allow water trough to fill to proper
operating level.
Sanitize ice machine after cleaning.
12. Perform Operational Checks, Pages 7 and 8.
A dirty top extrusion, Figure 13, could result in ;
uneven water flow over the evaporator. Ensure all
scale and dirt are removed.
Sanitizing
3. Thoroughly rinse with clean water all parts
and surfaces washed with the cleaning
solution.
Sanitizer is used for removal of algae or slime,
AND AFTER USE OF MANITOWOC ICE MACHINE
CLEANER. It is not used for removal of lime scale
NOTE: Incomplete rinsing of the ice bridge
thickness probe could leave residue which could
cause the ice machine to go into premature
harvest. For best results, brush or wipe off while
rinsing and then wipe dry.
4. Reinstall all parts removed for cleaning except
front panel and top chute (if stacked).
CLEAN THE EVAPORATOR SURFACE
NOTE: Failure to clean other parts prior to
evaporator may result in poor cleaning of the
evaporator surface.
1. Turn on water to ice machine at water service
valve and ensure float valve is open, Figure12.
2. Allow trough to fill to proper operating level,
Figure 6.
3. Set ICE/OFF/WATER PUMP switch at WATER
PUMP.
4. Add two ounces of cleaner to water trough
and allow solution to circulate a maximum of
10 minutes.
NOTE: Use a soft brush on excessively dirty
evaporator to help remove deposits. Ensure
connecting holes in back corners of cube molds are
open.
5. Set ICE/OFF/WATER PUMP switch at OFF.
6. Shut off water at float valve. See Figure 12.
7. Drain water trough by removing drain plug.
8. Thoroughly rinse trough with clean water, then
reinstall drain plug.
9. Turn on water at float valve.
10. Set ICE/OFF/ WATER PUMP switch at WATER
14
or other mineral deposits.
1.
Loosen two screws holding front panel in
place and remove front panel.
. Set ICE/OFF/WATER PUMP switch at OFF
after ice falls from evaporator at completion of
Harvest cycle or set switch at OFF and allow
ice to melt off evaporator.
A CAUTION
NEVER USE ANY TYPE OF OBJECT TO
FORCE ICE FROM EVAPORATOR AS
DAMAGE MAY RESULT.
10.
11.
. Stacked ice machines: Remove ice chute as
described under Removal of Parts for
Cleaning, Step 4, Page 11.
Remove water curtain, Figure 7.
Remove all ice from bin.
Set ICE/OFF/WATER PUMP switch at WATER
PUMP.
Add one ounce of sanitizer to water trough
and allow solution to circulate a minimum of
one minute.
Drain solution from trough by removing drain
plug, Figure 6.
Thoroughly rinse trough with clean water, then
reinstall drain plug.
Wash all surfaces requiring sanitizing (ice
machine and bin) with a solution of one ounce
of sanitizer to up to four gallons of water. ( ) \
Thoroughly rinse all sanitized surfaces with
clean water.
12. Set ICE/OFF/WATER PUMP switch at ICE.
13. Perform Operational Checks, Pages 7 and 8.
Discard first batch of ice.
Checking and Cleaning the
Water Dump Valve
NOTE: This covers the Alco water dump valve only.
Although cleaning the dump valve is considered
maintenance, we recommend you use qualified
maintenance personnel or service company to
perform the following procedures.
OPERATION CHECK
1. Remove top and right side panel.
2. Set ICE/OFF/WATER PUMP switch at ICE.
3. Check clear plastic outlet drain hose of dump
valve, Figure 17, for leakage while the ice
machine is in the freeze mode. Dump valve
should be open throughout the harvest mode.
(If the water flow through the dump valve is
restricted during the harvest mode, water will
continue to run up to the distribution tube.)
4. If the dump valve is leaking or is restricted,
remove, disassemble and clean.
REMOVE WATER DUMP VALVE
(FIGURE 17)
AWARNING
DISCONNECT ELECTRIC POWER TO THE
ICE MACHINE AT THE ELECTRIC SERVICE
SWITCH BOX.
IC-016-OW
MOUNTING
SCREWS
(2)
DISCONNECT
WIRES AT
COIL
COIL
PLASTIC
DRAIN
HOSE
FIGURE 17 WATER DUMP VALVE REMOVAL
1. Drain water trough by removing drain plug.
2. Remove water dump valve shield from water
dump valve mounting bracket.
3. Disconnect wires from dump valve coil.
4. Remove two screws securing dump valve and
mounting bracket.
5. Remove tubing from dump valve by twisting
off hose clamps.
DISASSEMBLE WATER DUMP VALVE
(FIGURE 18)
1. Pry off coil retainer on top of dump valve coil
with flat tip screwdriver.
IC-017-OW
Bs LS]
ZE
SPANNER bas co
TOOL 787 WAENCH
(Part No. = se)
a DE
54-8907-3)
ENCLOSING
U TUBE
= PLUNGER
PLUNGER ams
e ay
RUBBER SO
GASKET
FIGURE 18 WATER DUMP VALVE
DISASSEMBLY
15
2. Lift coil assembly off valve body. Note position
of coil assembly on valve before removing.
When reassembling valve, ensure coil is in
same position.
3. Place spanner tool (Manitowoc Part No.
54-8907-3, available through your local
Manitowoc Distributor) over enclosing tube
and insert pins on spanner tool into holes on
bottom of tube.
4. Turn spanner tool counterclockwise with 7/8"
wrench and remove enclosing tube, plunger,
and rubber gasket from valve body.
It is not necessary to remove spring from plunger
when cleaning. If spring is removed, insert flared
end of spring into slotted opening in top of plunger
until spring comes in contact with plunger spring
stop. Use care not to stretch or damage spring in
plunger when cleaning.
CLEANING WATER DUMP VALVE
Replace excessively dirty or worn water dump valve
components. Order Water Dump Valve Rebuild Kit,
Part No. 24-0487-3. Contact your Manitowoc
Dealer.
1. Soak components in cleaning solution (refer to
Cleaning Procedures, Page 13). Remove
heavy scale deposits with a stiff-bristle brush.
Use a small bottle brush to clean inside the
enclosure tube. Wipe off rubber gasket with
soft cloth.
A CAUTION
DO NOT SOAK COIL ASSEMBLY.
local water supply has high turbidity (dirty water), a
prefilter is also recommended.
Consult your local dealer or distributor for
information on Manitowoc’s full line of Tri-liminator
filtration systems.
To ensure maximum filtration efficiency, replace the
primary filter cartridge every six months. The filter
gauge will indicate if replacement is necessary prior
to six months usage (below 20 psig).
Tri-Liminator systems which include a pre-filter
should not require primary filter replacement prior
to six months usage. If replacement is indicated,
first replace the pre-filter.
REPLACEMENT PROCEDURE
(FIGURE 19)
1. Turn off water supply using the inlet shut-off
valve
2. Depress pressure release button to relieve
pressure.
3. Unscrew housing from cap (see illustration).
4. Remove used cartridge from housing and
2. Thoroughly rinse components with clean
water.
3. Reassemble water dump valve and reinstall in
ice machine.
Water Filtration
Manitowoc recommends the use of water filtration
on the water supply to the ice machine. Filtration
reduces mineral build-up on the ice making
surfaces of the ice machine which can slow the ice
making process, reduce ice production, increase
energy consumption and increase cleaning
frequency. Filtration also improves ice quality. If the
16
discard.
IC-018-OW PRESSURE
CAP CARTRIDGE RELEASE BUTTON
a
SHUT OFF OUTLET
VALVE SIDE
3)
Al
PRE-FILTER
(Part No.
12-8018-9)
HOUSING -
SEAL
N _ PRIMARY FILTER
L E _ J (Part No.
12-8017-9)
FIGURE 19 WATER FILTRATION
TU.
Nu
5. Remove O-ring from groove in the housing
and wipe groove and O-ring clean. Relubricate
O-ring with a coating of clean petroleum jelly
(Vaseline). Place O-ring back in groove and
with two fingers wipe or press it down into the
groove.
NOTE: This step is important to insure proper filter
seal. Make sure the O-ring is seated level in the
groove.
6. Insert a new cartridge into the housing making
sure that it slips down over the housing
standpipe.
7. Screw the housing onto the cap and hand
tighten. Do not over-tighten or use spanner
wrench.
8. Repeat Steps 3 through 7 for each filter
housing.
9. Turn on the water supply to allow housing
(and filter) to slowly fill with water.
10. Depress the pressure release button to
release trapped air from housing. Check for
leaks.
Removal From
Service/Winterization
You must take special precautions if the ice
machine is to be removed from service for
extended periods or exposed to ambient
temperatures of 32°F. or below.
5. Water-cooled ice machines: disconnect
incoming water line and drain line from water-
cooled condenser at rear of ice machine.
6. Blow compressed air into incoming water
openings and drain openings until water stops
coming out of float valve and water trough.
7. Water-cooled ice machines: pry open water
regulating valve by inserting large standard
screwdriver between bottom spring coils of
valve. Pry spring upward to open valve,
Figure 20. Hold valve open and blow
compressed air through condenser until no
water remains.
8. Ensure no water is trapped in the water lines,
drain lines and distribution tube.
9. if ice machine is outside, cover machine to
prevent exposure to elements.
A CAUTION
IF WATER IS ALLOWED TO REMAIN IN THE
MACHINE IN FREEZING AMBIENT
TEMPERATURES, IT COULD FREEZE
RESULTING IN SEVERE DAMAGE TO SOME
COMPONENTS. A FAILURE OF THIS
NATURE IS NOT COVERED BY WARRANTY.
1. Disconnect electric power at electric service
switch box.
2. Turn off water going to the ice machine.
3. Remove drain plug from water trough.
4. Disconnect drain line and incoming ice
making water line at rear of ice machine.
IC-019-OW
INSERT
SCREW DRIVER
REAR BETWEEN BOTTOM
PANEL SPRING COILS AND
PRY UP TO
OPEN VALVE
LEFT SIDE
PANEL
REGULATING
VALVE
FIGURE 20 MANUALLY OPEN
WATER REGULATING VALVE
17
SECTION 3
MAINTENANCE
Follow a general maintenance schedule to ensure
reliable, trouble-free operation as well as maximum
ice production.
Although you, the owner, are responsible and may
perform your own maintenance, call your local
qualified Manitowoc Service Representative to
perform the maintenance if at any time you are
unsure or unaware of the procedures and safety
precautions that must be followed.
Maintenance Guidelines
We recommend you follow these guidelines on a
semi-annual basis*, depending on ambient air and
water conditions and usage. Some components
require less frequent maintenance (on an annual
basis" *).
Record your maintenance dates in the spaces
provided for future reference.
*SEMI-ANNUAL MAINTENANCE Page Reference Dates of Maintenance
1. General ice machine inspection. 10
2. Exterior cleaning. 10
3. Cleaning the condenser. 10
4. Interior cleaning:
Removal of parts 11
Cleaning procedures 13
5. Sanitizing. 14
6. Manitowoc Tri-Liminator water filter system
(if used). 16
7. Operational checks:
Water level 7
Water curtain 7
Bin switch 8
Ice bridge thickness 8
**ANNUAL MAINTENANCE Page Reference Dates of Maintenance
9. Water dump valve cleaning. 15
10. Water-cooled condenser/regulating valve
cleaning. 11
General Ice |
Machine Inspection
You can eliminate potential service calls by
performing routine maintenance. Check all water
fittings and lines for leaks and ensure refrigeration
tubing is not rubbing or vibrating against other
tubing, panels, components, etc. Remember, good
preventive maintenance leads to minimal
problems and maximum ice production.
Do not stack anything (boxes, etc.) on or around
the ice machine. Ensure remote condenser is well
ventilated (if applicable). Do not cover the ice
machine while it is operating. !t is absolutely
necessary to maintain adequate air flow through
and around the ice machine to ensure long
component life and maximum ice production.
Exterior Cleaning
1. Clean the area around the ice machine as
frequently as necessary to maintain
cleanliness and efficient operation.
2. Sponge dust and dirt off the outside of the ice
machine with clean, warm water and wipe dry
with a soft clean cloth.
AIR-COOLED CONDENSER
(Self-Contained and Remote Models)
A dirty condenser restricts airflow resulting in
excessively high operating temperatures which in
turn reduces ice production and shortens
component parts life. Clean the condenser at least
every six months.
A CAUTION
CONDENSER FINS ARE SHARP ENOUGH
TO CUT YOUR FINGERS. USE CARE WHEN
CLEANING THEM.
ACAUTION
COVER CONDENSER FAN MOTOR TO
PREVENT WATER DAMAGE IF CLEANING
CONDENSER AND FAN WITH WATER.
REMOVE COVER WHEN CLEANING IS
COMPLETED. |
A CAUTION
IF THE PANELS ARE STAINLESS STEEL,
CLEAN LIGHT STAINS WITH SOAP,
DETERGENT, OR A COMMERCIAL
CLEANER. DO NOT USE CLEANSERS
CONTAINING BLEACHING AGENTS AS
MOST OF THESE CONTAIN CHLORINE
WHICH WILL STAIN. USE STAINLESS
STEEL WOOL TO REMOVE HEAVY STAINS.
NEVER USE PLAIN STEEL WOOL AS IT
WILL CAUSE RUSTING. AFTER CLEANING,
RINSE THOROUGHLY.
Cleaning
the Condenser
AWARNING
DISCONNECT ELECTRIC POWER TO ICE
MACHINE AT THE ELECTRIC SERVICE
SWITCH BOX, BEFORE CLEANING
CONDENSER!
10
1. Remove top and left side panels (self-
contained models only).
NOTE: On remote condensers, remove top cover.
2. Clean outside of condenser (bottom side of
remote condenser) with soft brush or vacuum
with brush attachment. Brush or wash
condenser from top to bottom — not from side
to side. Take care not to bend the fins. Shine
flashlight through condenser to check for dirt
between the fins.
If further cleaning is required, use one or both
of the following procedures:
a. Blow through condenser from the inside
out using compressed air. Take care not
to bend fan blades. Shine flashlight
through condenser to ensure all dirt is
removed.
b. Clean with a commercial condenser coil
cleaner according to the directions and
cautions supplied with the cleaner.
Thoroughly rinse condenser with clean
water.
- 3. Straighten any bent condenser fins with a fin
comb, Figure 10.
IC-010-OW
>
CONDENSER
FIN rd
COMB
REMOVAL OF PARTS FOR CLEANING
1. Loosen two screws holding front panel in
place and remove front panel.
2. Set ICE/IOFF/ WATER PUMP switch at OFF
after ice falls from evaporator at completion of
Harvest cycle, or set switch at off and allow
ice to melt off evaporator.
A CAUTION
NEVER USE ANY TYPE OF OBJECT TO
FORCE ICE FROM EVAPORATOR AS
DAMAGE MAY RESULT.
FIGURE 10 STRAIGHTEN BENT
CONDENSER FINS
4. Carefully wipe off fan blades and fan motor
with a soft cloth, taking care not to bend fan
blades. Wash excessively dirty fan blades with
warm soapy water, then rinse thoroughly.
WATER-COOLED CONDENSER
(and Water Regulating Valve)
IMPORTANT: Water-cooled condensers and water
regulating valves should be cleaned by qualified
maintenance personnel.
The water-cooled condenser and water
regulating valve may require cleaning due to
scale build-up.
Symptoms of restrictions in the condenser water
circuit may include low ice production, and high
operating temperatures and pressures.
Interior Cleaning
For efficient operation, clean and sanitize ice
machine every six months. IMPORTANT: Do not
use hot water. If ice machine requires cleaning and
sanitizing more frequently, consult a qualified
service company to test the water quality and
recommend appropriate water treatment.
Before cleaning check water dump valve for proper
operation (see Checking and Cleaning Water Dump
Valve, Page 15). Deposits may accumulate in the
valve causing leakage or restriction of water flow.
3. Turn off water to the ice machine at water
service valve.
4. Stacked ice machines:
a. Remove top panel.
b. Lift ice chute up and out of ice machine.
5. Remove all ice from bin.
6. Remove water curtain.
7. Remove drain plug from water trough and
allow water to drain into bin.
REMOVE WATER PUMP (FIGURE 11)
1. Disconnect water pump power cord.
_ 1C-024-OW ’ LOOSEN
SCREWS
OUTLET
FIGURE 11 WATER PUMP REMOVAL
11
SECTION 4
BEFORE CALLING FOR SERVICE
If a problem arises during the operation of your ice machine, follow the checklist below before calling for service.
CHECKLIST
Problem
Possible Cause
To Correct
Ice machine does not operate.
No electrical power to ice
machine.
Tripped high pressure cutout
(water-cooled ice machines).
ICE/OFF/WATER PUMP
switch set improperly.
Water curtain stuck open.
Bin switch activating pin out
of adjustment.
Replace fuse, reset circuit
breaker, turn on main switch.
Reset high pressure cutout,
Figure 2, Page 5.
Set switch at ICE.
Water curtain must swing
freely, Figure 7, Page 7.
Adjust bin switch activating
pin, Figure 8, Page 8.
Ice machine does not release
ice or is slow to harvest.
Ice machine dirty.
Ice machine not level.
Air-Cooled Models: low
ambient.
Water regulating valve leaking
during harvest mode (water-
cooled ice machines).
Clean and sanitize ice
machine, Pages 11 and 14.
Level ice machine.
Minimum ambient is 35°F.
See Cleaning Water-Cooled
Condensers, Page 11.
Ice machine does not cycle
into harvest mode.
Ice bridge thickness probe
dirty.
Ice bridge thickness probe
wires disconnected.
Ice bridge thickness probe out
of adjustment.
Uneven ice fill (thin at top of
evaporator).
Clean and sanitize ice
machine, Pages 11 and 14.
Connect wires.
Adjust ice bridge thickness
probe, Figure 9, Page 8.
See Shallow or Incomplete
Cubes.
| Poor quality ice.
(lce “soft” or not clear.)
Quality of incoming water.
Ice machine dirty.
Water dump valve not
working.
Water softener working
improperly (if installed).
Contact qualified service
company to test quality of
water and make appropriate
filter recommendations.
Clean and sanitize ice
machine, Pages 11 and 14.
See Checking and Cleaning the
Water Dump Valve, Page 15.
Repair water softener.
18
Problem
Possible Cause
To Correct
Ч
evaporator.
Shallow or incomplete cubes,
incomplete ice fill pattern on
Ice bridge thickness probe out
of adjustment.
Water trough level too high or
too low.
Water float valve filter screen
dirty.
Ice machine dirty.
Water filtration.
Hot incoming water piped into
ice machine.
Incorrect incoming water
pressure.
Leaky water dump valve.
Ice machine not level.
Adjust ice bridge thickness
probe, Figure 9, Page 8.
Adjust float valve, Figure 6,
Page 7.
Clean filter screen, Figure 12,
Page 12.
Clean and sanitize ice
machine, Pages 11 and 14.
Replace filter, Figure 19,
Page 16.
Connect ice machine to cold
water supply. See Installation
Instructions.
Water pressure must be 20-80
psi. |
See Checking and Cleaning the
Water Dump Valve, Page 15.
Level ice machine.
X ;
Low ice capacity.
Water float valve filter screen
dirty.
Float valve shut-off closed.
Incoming water supply shut
off.
Float valve stuck open.
Dirty condenser.
High ambient temperature.
Inadequate clearance around
ice machine causing air flow
restriction.
Objects stacked on or around
ice machine blocking air flow
to condenser (Air-Cooled
Models).
Air baffle not installed
(Air-Cooled Models).
Clean filter screen, Figure 12,
Page 12.
Open shut-off valve,
Figure 12, Page 12.
Open water service valve.
Clean and adjust, Figure 6,
Page 7.
Clean condenser
(air-cooled, Page 10,
water-cooled, Page 11).
Maximum ambient is 110°F.
Provide adequate clearance.
Remove objects.
Install air baffle per
instructions on air baffle.
19
Ice Machine Warranty
Manitowoc Ice, Inc., hereinafter referred to as the COMPANY, warrants new ice Machines
manufactured by the COMPANY to be free from defects in material and workmanship under
normal use and service for a period of thirty-six (36) months from the date of original
installation, and twenty-four (24) additional months on the evaporators and compressors. The
obligation of the COMPANY under this warranty is limited to the repair or replacement of parts
or assemblies that in the COMPANY'S opinion are defective, F.O.B. the factory.
In addition to the component warranty explained above, the COMPANY will pay straight
time labor to repair or replace a defective component when failure occurs within thirty-six (36)
months from the date of original installation-and.only when such service is performed by a
COMPANY Contracted Service Representative or a refrigeration service agency as qualified
and authorized by the COMPANY'S local Distributor.
Time and hourly rate schedules, as published from time to time by the COMPANY, apply to
all service procedures. Additional expense including, but not limited to, overtime premium,
travel time, material cost, accessing or removal of the ice machine, is the responsibility of the
owner along with all maintenance, adjustments, cleaning and ice purchases.
The foregoing warranty shall not apply to (1) any part or assembly that has been altered,
modified, or changed; (2) any part or assembly that has been subject to misuse, abuse,
neglect, or accidents; or (3) any ice machine that has been installed and/or maintained
inconsistent with the technical instructions provided by the COMPANY.
The sixty (60) month compressor warranty, including the thirty-six (36) month labor
replacement warranty, shall not apply when the Ice Machine's refrigeration system is modified
with a condenser, heat reclaim device, or parts and assemblies other than those manufactured
by the COMPANY, unless the COMPANY approves these modifications for specific locations in
writing.
THiS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES OR GUARANTEES OF
ANY KIND, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE EXCEPT AS
PROVIDED IN THIS WARRANTY WITH RESPECT TO DEFECTS IN MATERIAL AND
WORKMANSHIP. The liability of the COMPANY arising out of the sale, use or operation of the
COMPANY'S parts and equipment, whether in warranty, contract, negligence or strict liability,
including claims for special, indirect or consequential damages, shall not in any event exceed
the cost of furnishing a replacement for a defective part or assembly as hereinabove provided.
Upon the expiration of the warranty period, as hereinabove provided, any such liability shall
terminate. The foregoing warranty shall constitute the sole and exclusive liability of the
COMPANY.
To secure prompt and continuing warranty service, the warranty registration card must be
completed and sent to the COMPANY within five (5) days from the installation date.
Complete the following and retain for your record:
Distributor/ Dealer
Model Number Serial Number
Installation Date
MANITOWOC ICE, INC.
2110 So. 26th St., P.O. Box 1720, Manitowoc, WI 54221-1720
Telephone: 920-682-0161 e Fax: 920-683-7879
Form 80-0373-3 (6/98)
Effective January 1,1991, in the United States, Canada, and international markets served by Manitowoc.
N