Multiplex C Series Owner’s Manual
ICE MACHINE
SERVICE MANUAL
Manitowoc Beverage Equipment
2100 Future Drive Sellersburg, IN 47172-1868
Tel: 812.246.7000, 800.367.4233 Fax: 812.246.9922
www.manitowocbeverage.com
In accordance with our policy of continuous product development and
improvement, this information is subject to change at any time without notice.
5005979 07-20-07 REV 0
Installation and Service Manual
FOREWORD
Manitowoc Beverage Equipment (MBE) developed this manual as a reference guide for the owner/
operator , service agent, and installer of this equipment. Please read this manual before installation
or operation of the machine. A qualified service technician should perform installation and startup of this equipment, consult the Troubleshooting Guide within this manual for service assistance.
If you cannot correct the service problem, call your MBE Service Agent or Distributor. Always have your model and
serial number available when you call.
Your Service Agent___________________________________________________________________
Service Agent Telephone Number ______________________________________________________
Your Local MBE Distributor ___________________________________________________________
Distributor Telephone Number _________________________________________________________
Model Number ______________________________________________________________________
Serial Number _______________________________________________________________________
Installation Date _____________________________________________________________________
UNPACKING AND INSPECTION
Note: The unit was thoroughly inspected before leaving the factory. Any damage or irregularities should
be noted at the time of delivery.
WARRANTY INFORMATION
Consult your local MBE Distributor for terms and conditions of your warranty. Your warranty specifically
excludes all beverage valve brixing, general adjustments, cleaning, accessories and related servicing.
Your warranty card must be returned to Manitowoc Beverage Equipment to activate the warranty on this
equipment. If a warranty card is not returned, the warranty period can begin when the equipment leaves
the MBE factory .
No equipment may be returned to Manitowoc Beverage Equipment without a written Return Materials
Authorization (RMA). Equipment returned without an RMA will be refused at MBE’ s dock and returned to
the sender at the sender’s expense.
Please contact your local MBE distributor for return procedures.
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Installation and Service Manual
FOREWORD ........................................................................................................ 3
UNP ACKING AND INSPECTION......................................................................... 3
WARRANTY INFORMATION ............................................................................... 3
SAFETY ...............................................................................................................6
IMPORT ANT SAFETY INSTRUCTIONS ........................................................................... 6
CARBON DIOXIDE WARNING......................................................................................... 6
QUALIFIED SERVICE PERSONNEL................................................................................ 6
SHIPPING, STORAGE, AND RELOCATION ..................................................................... 6
ADDITIONAL WARNINGS................................................................................................ 6
GROUNDING INSTRUCTIONS ........................................................................................ 7
WARRANTY INFORMATION...............................................................................8
SERVEND MODEL NUMBERING SYSTEM ..................................................................... 8
SERVEND INTERNATIONAL SERVICE POLICY AND PROCEDURE.............................. 9
INSTALLATION.................................................................................................. 10
ICE MACHINE INSTALLATION INSTRUCTIONS ........................................................... 10
TABLE OF CONTENTS
SIPHON VENT.................................................................................................................11
DUMP VALVE................................................................................................................. 12
ADJUSTING PROPER WATER LEVEL .......................................................................... 15
WATER CURTAIN ADJUSTMENT.................................................................................. 18
ST ACKING KITS............................................................................................................. 19
ICE MAKER CLEANING PROCEDURE ......................................................................... 20
REMOTE CONDENSER INSTALLATION INSTRUCTIONS ............................................ 21
REMOTE CONDENSER INSTALLATION GUIDELINES...................................22
REMOTE CONDENSERS MAXIMUM LOCA TION DISTANCE ....................................... 22
COMPONENT DIAGNOSTICS .......................................................................... 23
DECISION TREE BEFORE REPLACING A THERMIST OR ............................................ 25
DIAGNOSIS OF SERVEND CUBER THERMISTOR ....................................................... 26
FLOWCHART................................................................................................................. 27
SAFETY THERMO-DISC / F AN CYCLE CONTROL ....................................................... 29
HEAD PRESSURE CONTROL VALVE ........................................................................... 30
HOT GAS V ALVE / COMPRESSOR CONTACTOR / CHECK PROCEDURE.................. 31
COMPRESSOR AND STARTING COMPONENTS CHECK OUT PROCEDURE ............ 32
TOTAL ICE CAPACITY / ICE PRODUCTION CHECK..................................................... 33
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Installation and Service Manual
TABLE OF CONTENTS
3 RELAY CIRCUIT BOARD SEQUENCE OF OPERATION /
ADJUSTING BRIDGE THICKNESS / 3 RELAY CIRCUIT BOARD.................................. 36
3 RELAY CIRCUIT BOARD PROXIMITY SWITCH CHECK PROCEDURE..................... 37
PROXIMITY SWITCH VOLTAGE CHECK....................................................................... 38
4 RELAY CIRCUIT BOARD SEQUENCE OF OPERATION ............................................ 39
ADJUSTING BRIDGE THICKNESS................................................................................ 42
HALL SWITCH CHECK PROCEDURE 4 RELAY CIRCUIT BOARD............................... 43
TROUBLESHOOTING ....................................................................................... 44
PROBLEM ANALYSIS GUIDE - 3 RELAY BOARD......................................................... 44
EV ACUA TION AND CHARGING ....................................................................... 50
SYSTEM EVACUATION AND CHARGING / ALL REMOTE SYSTEMS DISCHARGE,
EVACUATION & RECHARGING PROCEDURES........................................................... 50
OPERATING SPECS AND CHARACTERISTICS.............................................. 52
DATA PER ARI STANDARDS......................................................................................... 52
AIR MODEL SPECIFICATIONS ...................................................................................... 53
WATER MODEL SPECIFICATIONS................................................................................ 55
REMOTE MODEL SPECIFICATIONS ............................................................................. 57
COMPRESSOR SPECIFICATIONS ................................................................................ 58
AVERAGE OPERATING CHARCTERISTICS ................................................................. 61
WIRING DIAGRAMS.......................................................................................... 71
INDEX.................................................................................................................83
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Installation and Service Manual
SAFETY
IMPORTANT SAFETY INSTRUCTIONS
Carefully read all safety messages in this manual. Learn how to operate the SV unit properly . Do
not allow anyone to operate the unit without proper training and keep it in proper working condition. Unauthorized modifications to the SV may impair function and/or safety and affect the life of
the unit.
CARBON DIOXIDE WARNING
DANGER: Carbon Dioxide (CO2) displaces oxygen. Exposure to a high concentration of CO2 gas
causes tremors, which are followed rapidly by loss of consciousness and suffocation. If a CO2 gas leak
is suspected, particularly in a small area, immediately ventilate the area before repairing the leak. CO
lines and pumps should not be installed in an enclosed space. An enclosed space can be a cooler or
small room or closet. This may include convenience stores with glass door self serve coolers. If you
suspect CO2 may build up in an area, venting of the B-I-B pumps and / or CO2 monitors should be utilized.
QUALIFIED SERVICE PERSONNEL
WARNING: Only trained and certified electrical and plumbing technicians should service this unit.
All wiring and plumbing must conform to national and local codes.
2
SHIPPING, STORAGE, AND RELOCATION
CAUTION: Before shipping, storing, or relocating this unit, syrup systems must be sanitized. After
sanitizing, all liquids (sanitizing solution and water) must be purged from the unit. A freezing environment causes residual sanitizing solution or water remaining inside the unit to freeze, resulting
in damage to internal components.
ADDITIONAL WARNINGS
Installation and start-up of this equipment should be done by a qualified service technician. Operation,
maintenance, and cleaning information in this manual are provided for the user/operator of the equipment.
Save these instructions.
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Installation and Service Manual
SAFETY
GROUNDING INSTRUCTIONS
WARNING: Risk of electrical shock. Connect to a properly grounded outlet only.
This appliance must be grounded. In the event of malfunction or breakdown, grounding provides
a path of least resistance for electric current to reduce the risk of electric shock. This appliance is
equipped with a cord having an equipment-grounding conductor and a grounding plug. The plug
must be plugged into an appropriate outlet that is properly installed and grounded in accordance
with all local codes and ordinances.
DANGER – Improper connection of the equipment-grounding conductor can result in a risk of
electric shock. The conductor with insulation having an outer surface that is green with or without
yellow stripes is the equipment grounding conductor. If rep air or replacement of the cord or plug
is necessary , do not connect the equipment-grounding conductor to a live terminal. Check with a
qualified electrician or serviceman if the grounding instructions are not completely understood, or
if in doubt as to whether the appliance is properly grounded. Do not modify the plug provided with
the appliance – if it will not fit the outlet, have a proper outlet installed by a qualified electrician.
WARNING – When using electric appliances, basic precautions should always be followed, including the following:
a)Read all the instructions before using the appliance.
b)To reduce he risk of injury, close supervision is necessary when an appliance is used
near children.
c)Do not contact moving parts.
d)Only use attachments recommended or sold by the manufacturer.
e)Do not use outdoors.
f) For a cord-connected appliance, the following shall be included:
• Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
• Unplug from outlet when not in use and before servicing or cleaning.
• Do not operate any appliance with a damaged cord or plug, or after the appliance
malfunctions or is dropped or damaged in any manner. Return appliance to the
nearest authorized service facility for examination, repair , or electrical or mechanical
adjustment.
g)For a permanently connected appliance – Turn the power switch to the of f position when
the appliance is not in use and before servicing or cleaning.
h)For an appliance with a replaceable lamp – always unplug before replacing the lamp.
Replace the bulb with the same type.
i) For a grounded appliance – Connect to a properly grounded outlet only . See Grounding
Instructions.
SAVE THESE INSTRUCTIONS
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Installation and Service Manual
Example:
MODEL- C 7 - A M A S - A A
(1) (2) (3) (4) (5) (6) (7) (8)
(1) Series of the machine
C = 30" or 48" wide cuber
S = 22" wide cuber
B = Ice Storage Bin
(2) Nominal Capacity per twenty four hours in one hundred pounds
I.E. 7 = Seven Hundred Pounds
(3) Type of Condenser
A = Air Cooled
W = Water Cooled
R = Remote Cooled
(4) Size of Cube
M = Mini Cube (3/8" x 7/8" x 7/8")
F = Full Cube (7/8" x 7/8" x 7/8")
J = Jumbo Cube (7/8" x 7/8" x 1 1/2")
WARRANTY INFORMATION
SERVEND MODEL NUMBERING SYSTEM
(5) Electric Code
Volts Cycle Phase
A = 208/230; 200 60; 50 1
B = 115 60 1
C = 208/230; 200 60; 50 1
D = 220/240 50 1
F = 208/230 60 1
G = 208/230 60 3
H = 220/240 50 3
(6) S = Stainless Steel Panels
(Blank) = Painted Panels
P = Painted Panels
(7) Generation Code
A, B, C, etc.....
(8) Unit Configuration
A = Standard Machine
Any Other Letter = Special Machine, call factory for parts or service information.
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Installation and Service Manual
SAMPLE:
91 H F 01 0001
Year Month Product Major Change Unit
Manufactured Manufactured Code Code S/N
WARRANTY INFORMATION
SERVEND INTERNATIONAL SERVICE POLICY AND PROCEDURE
DATE ISSUED: AUGUST 12, 1991
DATE EFFECTIVE: AUGUST 12, 1991
NEW SERIAL NUMBER FORMAT
DATE REVISED: MAY 1, 1993
Effective AUGUST 12.1991 all Servend dispensers, cubers and bins manufactured by Servend International will
have new serial number format.
The above serial number is defined as:
Hotel dispenser built in August, 1991 1st unit built under major code #1
Month Manufactured: Product Code:
January A A = K Series (obsolete)
February B B = KD Series (obsolete)
March C C = M Series
April D D = MD Series
May E E = B Series
June F F = H Series
July G G = Cubers
August H H = Bins
September J J = Drop-ins
October K 7 = Remote Condensers
November L
December M
** Alphabet codes will not use the letter "I" to prevent confusion with the number "1".
** Unit serial number will roll back to 0001 at the beginning of each new year and/or with each major
change code.
MAJOR CHANGE CODE IS AN ENGINEERING TRACKING CODE FOR SERVEND USE.
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Installation and Service Manual
INSTALLATION
ICE MACHINE INSTALLATION INSTRUCTIONS
Freight Claim Loss or Damage:
1. The delivery freight company, distributor or
dealer is responsible for loss or damage to your merchandise. All claims must be filed with the p arty that delivers your merchandise.
2. Check the number of containers delivered
against the number shown on your receipt. If the total is
not correct, have the driver note the shortage on your
receipt.
3. Check all cartons for visible damage, open and
check the contents of any carton in question before the
driver leaves. Be sure the driver notes the type and degree fo damage on your receipt. All damaged merchandise must be inspected within 15 days of delivery , notify
your carrier immediately.
4. If concealed damage is found when merchandise in unpacked, place the packing material with the
merchandise and request an inspection from the delivering carrier.
5. File your claims for loss or damage at once.
Delays in filing will only hinder achieving a satisfactory
resolution to your claim.
Installation:
We recommend that installation and start-up be performed by the Dealer Professionals where your ice maker
was purchased.
Your ice maker will perform at optimum efficiency in
a approximate 70
ter. Increased air or water temperatures will decrease
performance. Never operate your machine in rooms with
temperatures below 50oF (10oC) or above 100oF (38oC).
If the ice maker is located in an unheated area, it
must be protected from freezing temperatures or shut
down and winterized.
Set-up of the Storage Bin and Cuber:
1. Remove the bin from the shipping carton. Using
the carton for protection against scratching, place the
bin on its back.
2. Screw the bin legs (enclosed inside the bin) into
the bottom of the ice bin.
3. Place the bin upright in the permanent position.
4. Remove the carton from the ice maker and place
the ice maker on the bin. Align the ice maker with the bin
back. Install stabilizing bolts through the lower front channel of the ice maker and into the header plate of the bin.
These bolts are packed in the plastic bag located in the
water pan of the ice maker.
5. Remove the ice maker internal packing. Level
the ice maker with a torpedo level on the face of the
evaporator. The evaporator MUST be plumb vertically
and level horizontally left to right. Level the machine by
screwing the feet of the bin either up or down.
o
F (21.1oC) room with 50oF (10oC) wa-
Location:
For best performance, select a location away from
all heat sources, such as radiators, ovens, refrigeration
equipment, direct sunlight, etc.
Avoid placing air cooled models in kitchens whenever possible as grease, flour or other airborn particles
will collect on the condenser and fan blade, requiring
increased preventative maintenance and will reduce efficiency.
Discuss the best location with your Dealer Professional. Allow a minimum of 6" (15.24cm) clearance
around the ice maker for air circulation (both sides, top,
and black). Restricted air circulation will affect the maintenance-free life or your ice maker and its effeciency.
10
Plumbing Lines and Connections:
All plumbing (water and drain) connnections must
conform to local and national codes.
To prevent condensation, insulate all water supply
and drain lines. Insulating water lines will increase efficiency as well.
INSTALLATION
SIPHON VENT
Installation and Service Manual
11
Installation and Service Manual
INSTALLATION
DUMP VALVE
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INSTALLATION
Installation and Service Manual
Shut off valves should be loacted in the water supply lines for ice maker and condenser (water cooled
units). The water inlet strainer must be installed in the
ice maker water supply (see diagram on water curtain
and/or rear of machine). Water supply to water cooled
condensers should include a standpipe for the prevention of "water hammer".
It may be necessary to connect water supply to a
water treatment system. Consult your local Servend
Dealer or Distributor for proper size required. Water treatment may pay for itself through reduced maintenance,
higher efficiency, quality of ice, and longer equipment
life.
NOTE: Water cooled unit s connected to recirculation systems or cooling towers etc., must maintain
a minimum of 10 psi pressure drop across the condenser when operational.
Drains:
To ensure trouble-free drainage, vent cuber and bin
drains to the atmosphere at the cabinet (see sketch).
Drain lines from the cabinet require 1/4" (6mm) drop
per foot (30cm) fo run. Lines should terminate over an
open trapped and vented floor drain.
Installation Check List:
1. Has cuber evaporator been leveled?
2. Are electrical connections complete per name-
plate specifications? Is manual disconnect "ON"?
3. Check water and drain connections:
A) Has water inlet pressure been checked?
B) Are water shut-off valves open?
C) Is water strainer installed?
D) Is bin drain tube assembled to bin?
E) When used, is the water cooled condenser
drained seperately?
F) Are drain lines vented?
G) Are drain lines insulated and sloped to floor
drain?
4. Is there 6" (15.24cm) clearance at cuber sides,
back, top for air circulation?
5. Is the cuber installed where ambient tempera-
tures will not be bleow 50oF (10oC) or above 100oF
(38oC)? Will incoming water temperature be maintained
between 45oF (7oC) and 90oF (32oC)? If air temerature
drops below 50oF (10oC) shut unit down! Disconnect all
water lines to prevent freeze up of unit.
Electrical:
All supply wiring and connections must conform to
the national and local engineering codes. Size wiring and
fuse per nameplate specification. Connect the cuber to
a seperately fused circuit. Conduit must be connected
to the electrical control box inside the cuber, not the rear
panel on a "C" Series machine. Place a manual disconnect in a convenient location between the cuber and fuse
box. The cuber must be grounded by the control box
ground screw or conduit connection.
6. Does water curtain move freely?
7. Check float valve and adjust water level as required. Be certain water pan is seated on its support
block.
8. Has storage bin and cuber been sanitized?
Air deflection baffles are available for all air cooled
equipment. The baffles attach to the side and rear to
prevent air from recirculating through the condenser.
Sart-Up Procedure Siphon System:
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Installation and Service Manual
INSTALLATION
Sart-Up Procedure Siphon System:
1. Place the ON/OFF switch in the water pump
position. Only the water pump will start. Permit the sump
to fill and the float to shut off. Check for continuous and
even water flow over top plastic extrusion and evaporator. Is water flowing from all water distribution tube holes?
Check water level in siphon tube.
2. Place switch in "off" position. Water should fill
the sump and pan tube starting a siphoning action. The
siphon should drain the sump then stop flowing. In not,
lower the water level to approximately 3/8" (.95cm) below the siphon clip.
3. Place switch in the ice position, the compressor,
condenser fan motor (if air cooled) and water pump and
fan motor will stop and the harvest solenoid will open.
Swing the water curtain open and hold for a maximum of
15 seconds, the compressor will stop. Release the water curtain and the compressor, fan motor and water
pump will start, initiating a new ice making cycle.
4. For optimum life performance of the ice maker,
the bridge should be a minimum of 1/8" (.32cm) to a
maximum of 3/16" (.475cm) in the center of the ice sheet.
Permit the ice maker to drop two (2) complete sheets of
ice before making any bridge adjustment.
5. Ice bridge adjustment:
A.If ice size requires adjustment, use fine adjustment only .
4. Place the switch in the ice position. The compressor, condenser fan (if air cooled), and water pump
will operate. Depress the manual harvest switch, the
water pump and fan motor will stop and the harvest solenoid will open. Swing the water curtain open and hold
for a maximum of thirty (30) seconds. The compressor
will then stop. Release the water curtain. The water pump
and compressor fan (if air cooled) will start in the ice
making cycle.
5. For optimum life and performance fo the ice
maker, the bridge should be minimum of 1/8" (.32cm) to
a maximum of 3/16" (.475cm) in the center of the ice
sheet. Permit the ice maker to drop two (2) complet
sheets of ice before making any bridge adjustment.
6. To adjust the bridge thickness of the ice sheet,
go to the bottom of the circuit board. There is a bank of
eight (8) DIP switches. To make the bridge thicker, turn
the next switch to the "on" position. To make the bridge
thinner, turn the next switch to the "off" position.
7. If you have any difficulty in the operation of this
machine, please call your local Servend service company or dirstributor.
Owner/Operator:
Before leaving, be sure the owner/operator understands the ice maker operation and the value of preventative maintenance.
Purge Valve System:
1. Open water valve to machine and allow the water pan to fill with water through the float valve. Check
the water level in the water pan - adjust if required to
have water level equal to the crease in the side of the
pan.
2. Engage electric to the machine. Turn the water
pump to the "on" position. Check for continuous and even
water flow over the top plastic extrusion and evaporator.
Is the water flowing from all holes in the distribution tube?
If the water seems to "creek" at the top extrusion without
having a slow sheet fo water cascading over the top extrusion, clean the top extrusion with Scotch Brite pad or
terry cloth.
3. With the toggle switch in the pump postion, check
the dump valve. Depress the manual dump switch and
hold. This should clean out most of the water in the water pan while allowing the float to refill the pan.
14
Does the owner know:
1. Location of the electrical disconnect switch and
water shut-off valves?
2. How to start, shut down, clean and sanitize?
3. Bin full operation?
4. Proper method of cleaning condenser and fan
blade?
5. To inspect distribution tubes and evaporator for
mineral deposits.
6. How to identify when water filter needs replac-
ing?
7. Who to contact for product information or service? We suggest placing the organization's name and
phone number on the front panel.
8. Use and location of high pressure reset on water cooled equipment?
INSTALLATION
ADJUSTING PROPER WATER LEVEL
Installation and Service Manual
Siphon System:
A) Be sure water pan is properly seated on its sup-
port blocks.
B) Adjust float by releasing the bracket screws to
raise, or lower, float assembly.
C) W ater level should be set 3/8" (.95cm) below the
bottom of siphon hose clip.
D) With water level set, turn pump on to circulate
the water. Be sure the float will return water level to original setting and stops inlet water.
E) Turn water pump off. The machine should now
siphon, the siphon action stops and the float returns the
water level to original settings.
F) The flow washer in the float assembly (detail A)
will control water pressure from 55/120 PSI (3.79/8.27
Bars) to eliminate float chatter. In low water areas 20
PSI (1.37 Bars) and less, remove the flow washer.
Dump System:
A) Adjust float by disengaging the bracket screws
to raise, or lower, float assembly.
B) Water level to be set at water level mark on wa-
ter pan (see diagram).
C) With water level set, turn water pump ON to circulate the water. Examine to be sure the float will return
water level to original setting and stops inlet water.
D) Depress and hold the manual dump switch (white
button by toggle switch) - allow dump action to empty
water pan. This is a momentary switch - you must hold it
depressed to complete manual dump cycle.
E) Release the manual dump switch - float should
return water to original level.
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Installation and Service Manual
INSTALLATION
16
INSTALLATION
Installation and Service Manual
17
Installation and Service Manual
INSTALLATION
WATER CURTAIN ADJUSTMENT
The water curtain acts as a shield to prevent the
water circulated across the evaporator from teh splashing into the bin, resulting in additional make up water
being required.
T o adjust, the screws holding the curtain bracket and
pin assembly must be loosened, left and right side. The
bracket assembly will allow the curtain to be adjusted
5/16" (8mm) up or down and front to rear. the bottom
edge of the curtain should be set to clear the water pan
by a maximum of 1/8" (.32cm). Normal adjustment, front
to rear, would be to adjust the curtain in as far as possible.
Adjustment must also observe side to side travel of
curtain. Any side to side movement of 1/16" (.16cm) or
greater must be shimmed out as this would create erratic operation of proximity and/or Hall switch.
NOTE: Be certain water pan is properly seated on
it's support blocks
before adjusting water curtain.
18
INSTALLATION
STACKING KITS
The Servend "C" series ice machines are stackable
to double their capacity . When ordering stacking kits, the
bottom unit determines the kit required. Any Servend ice
machines of the same width. Dual evaporator ice machines will only stack with dual evaporator ice machines.
EXAMPLE: You have a C-7 installed and wish to add
a C-9 for additional ice capacity . Y ou would order the
K4SK (for the C-7)
Installation and Service Manual
19
Installation and Service Manual
INSTALLATION
ICE MAKER CLEANING PROCEDURE
WARNING: When using cleaing fluids or any chemicals, rubber gloves and eye protection should be worn.
Approved Ice Machine Cleaners:
Lime-A-Way or Calgon Nickel Safe (green color only)
Caution: Before attempting any cleaning of the ice machine, the ice in the bin or dispenser must be removed.
Prep-Clean:
Using full strength ice machine cleaner on a section
of coarse surface material (terry cloth) wipe down the
inside walls of the food zone, wipe out the water pan,
wipe off the water curtain and evaporator plastic extrusions. Should the water distribution tube be heavily
scaled, remove and soak in full strength ice machine
cleaner while prep-cleaning.
Clean the water system and evaporator:
1. Place toggle switch to pump position to circulate cleaner through water system and across evaporator.
2). Pour 4 ounces of approved cleaner into water
pan. (4 ounces (1 13.39g) is proper amount for all Servend
ice machines).
3). Float will bring in additional water during circulation to produce proper cleaning ratio of 4 ounce cleaner
to 1/2 gallon (1.89Liters) of water.
4. Place toggle switch in pump position. Allow
cleaning solution to circulate for 10 to 15 minutes maximum.
5. Turn toggle switch to OFF position - this will allow cleaning solution to siphon out of machine. On later
production models (with manual dump switch), do not
turn toggle switch off.
NOTE: A) Ice machine should only be cleaned when
required. Do not clean by a timed schedule of every
60 days, or etc.
B) Required cleaning of more than twice (2)
per year may require water treatment. Contact your
local Servend distributor.
Sanitize Cycle:
1. Check water level to be at mark on water pan - if
required, adjust float to maintain proper level.
2. Add 1/4 ounce (7.08g) unscented laundry bleach
(5.25% CI NaO concentration) to water contained in the
water pan in order to yield 200 PPM available chlorine.
Allow the pump to circulate this solution for 5 minutes
(or use a commercial ice machine sanitizer following the
directions on the container).
3. Depress the manual dump switch to drain the
water pan.
4. To sanitize the bin surface and other cont act areas - use 1 ounce of liquid bleach per gallon of water
and wipe all surface areas with the solution.
5. Place toggle switch in ice position. Discard the
first batch of ice produced.
6. Should you ever have any questions on teh
proper procedure, please call you local distributor.
Depress the manual dump switch and hold until
cleaner is dumped from system.
6. Fresh water will refill water pan - allow this fresh
water to recirculate for approximately 5 minutes to rinse
water system. Repeat step #5 twice (2 times).
7. After second rinse cycle, place toggle switch in
ice position. Allow product to produce one (1) slab of ice
- discard ice.
8. Cleaning cycle is now complete - return ice machine to normal operation.
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Installation and Service Manual
REMOTE CONDENSER INSTALLATION GUIDELINES
REMOTE CONDENSER INSTALLATION INSTRUCTIONS
1. Follow the standard installation supplied with
cuber. Do not connect cuber into power source until the
remote condenser and line set installation is complete.
2. Assembly of remote condensers:
A) Assemble four (4) legs to base panel. Place
leg gussets on legs. Att ach support bracket from
base panel to legs.
B) Locate the remote condenser in a well ventilated area on the roof away from other condenser
discharge air flow.
C) Using the four (4) mounting holes provided
to secure the remote to the roof. Seal over heads
of bolt or fasteners with tar or pitch to prevent
entrance of moisture.
NOTE: Consult your local distributor for other
applications.
Installing a Servend remote cuber with other than
Servend condenser will void cuber warranty .
3. Each condenser and cuber is connected with two
(2) *pre-charged lines.
A) The pre-charged lines are ordered separately
from the condenser to suit each individual application.
mote condenser then using the proper sized
wrench, tighten unitl fittings bottom out, then turn
an additional 1/8" but DO NOT TURN MORE
THAN 1/4.
NOTE: Once the refrigerant lines are connected, the
seal is broken in the fittings. If the lines are
removed or loosened from the cuber or remote condenser, the refrigerant charge will
be discharged to the atmosphere. DISCHARGING OF ANY REFRIGERANT TO THE
ATMOSPHERE IS IN VIOLATION OF THE
CLEAN AIR ACT OF JULY 1992.
5. Remote condenser electrical hook-up:
A) Connect remote condenser to power source
(208/230 V AC, 60HZ). A disconnect switch must
be used.
B) Make sure the electrical connection follows
all local and national codes.
NOTE: A) Never wire condenser into cuber section.
The condenser is an independent electrical
connection.
B) Fan motor will not start until pressure rises
to 250 PSIG (16.55 Bars) closing fan cycling
switch.
B) The pre-charged line lengths are 20 feet
(6.096 meters), 35 feet (10.66 meters), and 50
feet (15.24 meters).
*(Pre-Charged is defined as a vapor holding
charge - not a portion of the system charge).
4. Installation of line kits
A) Remove the tubing from the carton. Carefully
uncoil the lines so the tubing doesn't become
kindled.
NOTE: Excess tubing should be cut from the tube
sets
before connections are made at con-
denser and ice maker.
B) The refrigerant o-ring fittings on the cuber and
remote condenser are to be lubricated with REFRIGERANT OIL BEFORE CONNECTING.
C) Charge ports are provided on each end of
line sets. Line sets are non-directional and fittings match either cuber or condenser.
D) Carefully thread (by hand) the female line fittings to the male fittings on the cuber and re-
6) Finishing cuber section:
A) Remove left hand side panel of cuber.
B) Turn service valves on receiver tank to open
position (fully extended) releasing refrigerant to
the balance of the system.
C) Leak check line connections at cuber and condenser.
D) Replace side panel of cuber.
E) Connect cuber to power source.
F) Make sure electrical connections follow all
local and national codes.
7) Start Up:
A) Use standard procedures from cuber instal-
lation instruction.
B) Af ter the cuber is running, check the remote con-
denser and verify that condenser fan is running.
NOTE: Fan may cycle off during harvest cycle, this
would be normal
21
Installation and Service Manual
REMOTE CONDENSER INSTALLATION GUIDELINES
REMOTE CONDENSERS MAXIMUM LOCATION DISTANCE
(REFRENCES DRAWING C)
Remote condenser installations consist of vertical
and horizontal distances to the condenser that, when
combined, must fit within approved guidelines.
CONDENSER MAXIMUM HEIGHT:
This should never exceed 35 feet (10.66 meters).
TOTAL MAXIMUM LINE LENGTH:
This should never exceed 50 feet (15.24 meters)
total. The pressure drop, due to the refrigerant flowing
through the lines and condenser, will exceed the design
limits of the head pressure control.
CONDENSER MAXIMUM DROP:
The condenser should never be positioned more than
15 feet (4.57 meters) below the ice machine. the liquid
refrigerant pushed from the condenser up to the ice
machine will contribute to an overall pressure drop.
22
COMPONENT DIAGNOSTICS
ICE MACHINE CHECKLIST
Installation and Service Manual
PROBLEM
1. ERRATIC SIPHON ACTION:
O Water level not correct
O Water pan not seated on blocks
O Float leaking through
O Algae build-up in siphon
O Siphon tube to copper vent tube too short or
kinked at rear of cabinet. Siphon not istalled
on vertical.
O Too small or restricted drain line for copper
vent tube.
O High water pressure.
PROBLEM
2. PUMP CAVITATING (PULLING AIR), or pump
air locked:
CORRECTIVE ACTION
Adjust.
Reseat water pan.
A) If float is not round bulb style, replace with
#9200377.
B) If float is round bulb style, clean.
Pour 1/4 cup household bleach through siphon.
Plastic siphon tube must be 6" (15cm) to 8" (20cm)
out rear of cabinet, if not, replace tube - if tube is
kinked, reform or replace.
Increase drain size and/or remove any restrictions.
Is flow washer installed correctly? If yes, install water pressure regulator.
CORRECTIVE ACTION
O Low water pressure
O Water supply line too small
O Water discharge from float directed at pump
pick-up tube
O Pump to distributor tube has air lock
O Water level set too low
O High water pressure agitating water
20 PSI (1.37 Bars) or lower remove flow washer
3/8" (.32cm) minimum water supply
Raise shelf area of float bracket 2o
Tube too long and has raise at distribution tube.
Shorten tube - be certain tube does not prevent water curtain operation
Adjust
Is flow washer installed correctly?
23
Installation and Service Manual
COMPONENT DIAGNOSTICS
ICE MACHINE CHECKLIST (CONTINUED)
PROBLEM
3. POOR ICE FILL ON EVAPORATOR:
O Float or dump valve leaking through
O Water pan not seated or out of level
O Water curtain out of adjustment allowing wa-
ter to splash into bin and/or curtain freezing
to evaporator changing flow and freeze pattern over thermistor
O Water flow too fast over evaporator
O Water distributor tube not centered
O No control of water flow over evaporator (too
fast)
CORRECTIVE ACTION
Replace, or clean, as required.
Reseat pan on blocks. Level ice machine.
Adjust curtain brackets for proper alignment. Curtain brackets are adjustable 3/8" (9.5mm) up down/
front to back. Curtain should be set to just clear top
edge of water pan.
Check position of water distribution tube. The tube
should be spraying toward lower back of extrusion.
Be certain required sealing of evaporator upper extrusion area is done.
Water Distribution tube must be centered over top
extrusion of evaporator.
Check inner tube of water distribution to be 180o
from outer tube. Check restriction plug in water system.
PROBLEM
4. ICE BRIDGE NOT CORRECT:
O Slow harvest
A) Excessive meltage of bridge and cubes
B) Machine not level
O Control board out of adjustment
O Thermistor incorrectly mounted
O Thermistor sealant defective
O Defective thermistor
CORRECTIVE ACTION
Mineral contamination - clean evaporator
Re-Level ice machine.
See adjusting bridge thickness for your style of circuit board.
Follow procedure to remount thermistor
Follow procedure to remount thermistor
Replace thermistor
24
Installation and Service Manual
COMPONENT DIAGNOSTICS
DECISION TREE BEFORE REPLACING A THERMISTOR
SERVICE SYMPTOM COMMON MISDIAGNOSIS ACTUAL DIAGNOSIS
1.Eratic bridge thickness Replace thermistor Dirty evaporator
Dirty water system
Exposed TXV bulb
Flooding TXV
2.Freezes for 2-3 minutes Replace thermistor Slushing
then goes into harvest Ice bridge too thin
3. Ice frozen to the curtain Replace thermistor Hall switch lost target area and
made a second batch of ice
Flooding TXV
4. Ice not filling completely Replace thermistor Poor water flow
before going into harvest
5. No ice Replace thermistor Water cavitation
Premature harvest
Ice freezing to evaporator
6. Premature harvest with Replace thermistor Pump cavitation
no water flow or harvest
7. Thick ice at the bottom with Replace thermistor Conintuous syphoning of water from
thin ice at the top of the slab machine
8. Thick ice on bottom of Replace thermistor Starving expansion valve
evaporator with no ice on Flooding expansion valve
the top
9. Very thick ice bridge Replace thermistor Dirty condenser
Low refrigerant charge
10. Will not harvest ice Replace thermistor Dirty condenser
11.Will not go into harvest Replace thermistor Hall/proximity switch out of alignment
12. Will not go into harvest Replace thermistor Water dripping into bin
Ambient air entering into bin
25
Installation and Service Manual
DIAGNOSIS OF SERVEND CUBER THERMISTOR
COMPONENT DIAGNOSTICS
Erratic Operation (Bridge Thickness Erratic):
1. Check thermistor mounting:
A) Are the wire leads to the circuit board secure?
B) Is the tip of the control flush or protrude 1/64"
(.4mm) beyond the lower evaporator extrusion?
If correctly mounted, you may feel a slight bump.
C) Is there a heavy film of sealant over the tip of the
control? A very slight film is OK. If the tip of the control
looks a milky color, the silicone is too thick.
D) Af ter the machine sets for 24 hours is the first
sheet of ice OK? Does each succeeding sheet
of ice get thinner? This could be a sealing problem with water in the sensor well.
2. Bridge thickness gets progressively thinner each cycle:
A) Thermistor not properly sealed in lower evapo-
rator molding or thermistor set too far back into
molding.
B) To Reseal:
1. Remove water pan
2. Reach up in back of evaporator and
grasp thermistor leads and remove thermistor. Use a 1/16" punch to push thermistor out.
3. Remove dried silicone adhesive from
thermistor and clean out opening in
evaporator molding.
4. If replacing a plastic sleeve thermistor
with a metal jacket thermistor hole will
have to be reamed to 1 1/64" (.43cm). Do
not use a power drill.
5. Force G.E. RTV-108* silicone adhesive into front opening of evaporator
molding filling the hole until silicone
come out the back. Place thumb or finger over opening and reinsert thermistor
from rear of opening pushing toward the
front of the evaporator modling (this will
force silicone around the thermistor as
you push thermistor forward giving a
positive seal). Allow thermistor to be
flush or protrude approximately 1/64"
(.4mm) beyond face of evaporator molding with ample amount of silicone
ahesive. (1/64" equals a very slight
bump).
6. The G. E. RTV-108 silicone will set,
tack-free, in aproximately 15 minutes. Do
not allow water to contact silicone
until it is tack free.
*This is the only silicone recommended for proper
sealing of thermistor by Servend International (part
#5000881, or purchase locally.
Check Procedure:
1. Clear the evaporator of any ice. This can be done
with the use of the manual harvest switch on the circuit board.
2. Place the machine in the ice mode. Allow the
unit to make one sheet of ice.
3. At the end of a regular freeze time, manually har-
vest the ice.
4. Observe the sheet of ice. Is the bridge thickness
even from the top to bottom? Is the bridge thinner at the
top than at the bottom?
5. If your sheet of ice is thinner at the top than at
the bottom, your machine is suffering from a water loss
or refrigeration problem.
6. If you ice has an even bridge from top to bottom,
proceed with the OHM meter check.
7. Remove the control wires from the EV terminals
on the circuit board. In a dual evaporator machine, only
the left control (connected to the EV terminals) determines the thickness of the ice.
8. Attach you OHM meter to the ends of the wires.
Do not remove the control from the evaporator extrusion. Your meter should be capable of reading 5,000 to
40,000 OHMs accurately.
9. At room temerature, your control should read
ABOUT 10,000 to 15,000 OHM resistance.
10. Place an ice cube on the tip of the control. You
should obtain a reading in the range of 25,000 to 36,000
OHMs.
1 1. These readings are approximate. Do not be con-
cerned if your reading are slightly different.
12. If your control responds comparable to the above
readings, this control is good. If your control does not
respond, replace the control.
13. If you are working with a 4 relay circuit board
and the ice sensing control is "open" or "shorted", the
power light on the circuit board will flash. The machine
will not operate.
26
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