Scotsman CME650R Owner’s Manual
INTRODUCTION
CME650R
To the owner or user: This service manual is
intended to provide you and the maintenance or
service technician with the information needed to
install, start up, clean, maintain and service this
ice system.
The CME650R uses HP62 as the refrigerant, and
polyolester oil for compressor lubrication.
Table of Contents
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FOR THE INSTALLER: Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FOR THE INSTALLER: Coupling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
FINAL CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
COMPONENT LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
COMPONENT DESCRIPTION: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
FREEZING CYCLE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
HARVEST CYCLE - HOT GAS BYPASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
CLEANING & SANITIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SYSTEM SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SERVICE DIAGNOSIS: Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SERVICE DIAGNOSIS: Electrical and/or
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SERVICE DIAGNOSIS: Refrigeration and/or
Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REFRIGERATION SERVICE: HP62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Parts Lists and Wiring Diagrams are located in
the center of this manual, printed on yellow
paper.
Keep this manual for future reference.
This manual was printed on recycled paper.
October 1994
Page 1
CME650R
FOR THE INSTALLER
The CME650R will fit the f ollowing Scotsman ice
storag e bin s:
••*BH55 0
••*HTB500, HTB350, HTB250
••BH800 (with bin top KBT23)
••BH900 (with bin top KTB22)
••BH1360
It will also fit these Scotsman Dis pensers:
••CD200
••IS150 (with adapter kit KADCM1)
••RS150 (with adapter kit KADCM1)
*These smaller bins are recommended.
Scotsman Ice Systems are designed and
manufactured with the highest regard for safety
and performance. They meet or exceed the
standards of U . L. , N.S.F., and C. S . A.
Scotsman assu mes no liability or res po nsib ility of
any kind f o r prod ucts manufact ure d b y Scot s ma n
that have been altered in any way, including the
use of any par ts and/or other components not
specifically approved by Scotsman.
A remote condense r and precha rge d tubing kit are
required to asse mb le this ice syst em.
The normal finish for the machine is enamel. An
optional stainle ss ste el pane l kit (SP KCMD-1 ) can
be field installed . It contains a stainless steel top,
side panels, service panels , and front pane l.
Scotsman rese rv es th e right to mak e design
changes and/or imp ro vements at any time .
Specifications and designs are subject to cha nge
without notice.
Model Number Dimensions
(without bin)
W" x D" x H"
CME650RE -32 A 30 X 24 X 27 208-230/6 0/1 16.9 20 208 oz. Remote Air
CME650RE -3A 30 X 24 X 27 208-230/6 0/3 5.9 15 208 oz Remote Air
* Minimum Circuit Ampacity is used to determine wire size and type per the National Electric Code.
** The unit is shipped with th e full cha rge in th e receiver. For re-charg ing purposes , if the namep lat e charge
is diffe ren t th an this number, go by the namep late.
Use Scotsman remot e co nden ser RCE6 51 -32 A, RCE65 2-3 2A or ERC20 1-3 2A or ERC40 2-32A. Use
precharged tu bing kit R TE2 5 (25 ’) or R TE4 0 (40 "). Fan rela y kit KCMR23 0 req uire d when tw o ice machines
are powe ring 1 remo te conden se r.
This ice system (e x cep t remo te condense r) is desig ned to be installed indoors, in a controlle d en v iro nme nt .
Air Temperature 50
Water Temperature 40
Water Pressure 20 psi 80 psi
Voltage -10% +10%
Basic
Electrical
MINIMUM MAXIMUM
0
F. 1000F.
0
F. 1000F.
Minimum
Circuit
Ampacity*
Maximum Fuse
(or HACR Circuit
Breakers) Size
Refrigerant
Charge**
HP62 (R-404a)
Condenser
Type
Decem ber 1995
Page 2
Installation
CME650R
Water
The water supply for this ice machine has been in
contact with many materials since it fell from the
sky as rain. All rain is slightly acidic, and tends to
dissolve the materials it comes in contact with.
During water’s journey to the ice machine, it has
flowed over and through the ground, been picked
up by a municipal or private pump, forced through
a series of pipes of differing construction and may
have been treated by the municipality providing
the water.
The water supplied to this ice machine will then
contain a variety of substances that will likely show
up as solids during the ice making process. These
solids are similar to those found when water is
boiled out of a saucepan. Only the water boils
away, and the minerals that were in the water
solidify in the pan. During ice making only the
water is frozen into ice, the minerals stay behind in
the reservoir. This machine dilutes the water in the
reservoir every cycle to minimize the amount of
minerals in the water system, but after time the
minerals will appear and have to be dissolved by
ice machine cleaner, then flushed away during the
cleaning process.
Space is required for service access at the sides
and utility connections at the back. 6 inch
clearance is recommended.
The ice machine is not designed for outdoor
use. It must be installed indoors, in a
controlled environment. The air and water
temperatures must not exceed rated limits.
Pre-installation:
1. Inspect the place where the ice machine is to be
installed. Check for:
••space for the cabinet,
••water supply,
••drain availability
••and electrical power supply.
No extension cords are allowed. The building drain
inlet must be lower than the drain outlet of the ice
bin. The water supply must have a hand shut off
valve accessible when the unit is installed.
An ice machine is a food manufacturing plant; it
takes a raw material, in this case water, and
transforms it into a food product, ice. The purity of
the water is very important in obtaining pure ice
and in maximizing product life.
The water to the ice machine should be filtered.
Water filters vary greatly in ability and function.
Install one that filters out suspended solids to a
dimension of 5 microns or less. The finer the filter
the better, but finer filters may plug-up sooner than
course ones. It may be necessary to add a course
filter ahead of the fine filter to prolong filter life.
Even though there isn’t one filter that will cure all
water problems, a good filter combined with a
polyphosphate feeder gives about the best overall
performance.
Have the water tested. Acidic water or alkaline
water will both cause corrosion. Dissolved solids
cannot be filtered out. Check with a water
treatment specialist regarding testing, treatment
and filters.
October 1994
Page 3
Reservoir
Bin Thermostat
Installation
CME650R
Installation
Assembly:
1. Attach the legs, or optional casters, onto the ice
storage bin. Units that are stacked should only use
legs, not casters.
2. Place the ice machine onto the storage bin.
3. Line up the ice machine, check that there is a
good seal between the ice machine and the
storage bin.
4. If on a Scotsman bin, attach the ice machine to
the bin using the straps and bolts shipped with the
ice machine. If on another brand bin, follow the
directions included with that bin.
Bin Thermostat Installation:
1. Remove rubber cap from the end of the
thermostat bracket.
2. Attach the bin thermostat bracket to the bottom
of the ice machine using the thumb screws
provided. There are pre-drilled and tapped holes
located just behind the cube drop area. The end of
the bin thermostat bracket with the plastic tubing
on it will fit into the hole in the base of the machine.
3. Locate and uncoil a portion of the bin thermostat
capillary tube. Route the end of the capillary tube
into and through the bin thermostat bracket tube. It
should be inserted the full length of the tube, but
not past the end.
Thermostat
Capillary Tube
Bin Thermostat
Bracket
Stacking
Stacking:
This machine will stack onto any CM250,
CME250, CM450, CM500, CME500, CM650 or
CME650 with the same cabinet depth (24").
1. Remove and discard the top panel from the
lower unit.
2. Carefully lift the uncrated top unit onto the
bottom unit. Use of a mechanical lift is
recommended for this step.
3. Align the two ice maker cabinets.
4. Secure the top unit to the bottom one with the
hardware and straps shipped with the upper
machine.
5. Locate and uncoil all of the bin thermostat
capillary tube.
6. Route the bin thermostat capillary tube from the
upper unit, through the hole in the back of the
reservoir, through the lower unit and into the bin
thermostat bracket. Discard upper unit bracket.
Strap
Bin Thermostat Bracket
Capillary Tube
Routing Hole
March 1994
Page 4
FOR THE INSTALLER: Remote Condenser
CME650R
Locate the condenser as near as possible to
the interior location of the ice maker.
Location of the condenser is limited by the specific
length of precharged refrigerant tubing supplied for
the application. The pre-charged tubing connects
the icemaker to the remote condenser. The
condenser must be above the ice maker.
Select the best available location, protecting the
condenser from extremes of dirt, dust, and sun.
Meet all applicable building codes.
Roof Attachment:
Install and attach the remote condenser unit to the
roof of the building, using the methods and
practices of construction that conform to the local
building codes, including having a roofing
contractor secure the condenser to the roof.
Remote
Condenser
Precharged Line Routing
///////////////////////////////CAUTION/////////////////////////////////
Do not connect precharged tubing until all routing
and forming of the tubing is complete. See the
coupling instructions for connecting instructions.
////////////////////////////////////////////////////////////////////////////////
1. Each set of precharged refrigerant lines consists
of a 3/8 inch diameter liquid line, and a 1/2 inch
diameter discharge line. Both ends of each line
have quick connect couplings, the end without
access valves goes to the icemaker.
Note: The openings in the building ceiling or wall,
listed in the next step, are the minimum sizes
recommended for passing the refrigerant lines
through.
2. Have the roofing contractor cut a minimum hole
for the refrigerant lines of 1.75". Check local
codes, a separate hole may be required for the
electrical power to the condenser.
///////////////////////////////CAUTION//////////////////////////////////
DO NOT KINK OR CRIMP REFRIGERANT
TUBING WHEN INSTALLING IT.
////////////////////////////////////////////////////////////////////////////////
Locate Condenser No
Lower Than Ice Machine
TYPICAL
INSTALLATION
Excess
Tubing
Inside
Building
3. Route the refrigerant lines through the roof
opening.
Follow straight line routing whenever possible.
Any excess tubing MUST be retained within the
building.
4. Spiral any excess length of pre charged tubing
inside the building. Use a horizontal spiral (as
illustrated) to avoid any traps in the lines.
Note: Spiral need not be as tight as illustrated.
5. Have the roofing contractor seal the holes in the
roof per local codes.
October 1994
Page 5
Discharge Line
Insulation
CME650R
FOR THE INSTALLER: Coupling Instructions
////////////////////////////////CAUTION/////////////////////////////////
The couplings on the sets of precharged lines are
self sealing when installed properly. Carefully
follow the instructions:
////////////////////////////////////////////////////////////////////////////////
Initial Connections:
1. Remove the protector caps and plugs. Wipe the
seats and threaded surfaces with a clean cloth to
be certain that no foreign matter remains on them.
2. Lubricate the inside of the couplings, especially
the O-Rings with refrigerant oil.
••The 1/2 inch discharge line (schrader valve
end) goes to the remote condenser fitting
marked “discharge line”.
••The 3/8 inch liquid line (schrader valve end)
goes to the remote condenser fitting marked
“liquid line”.
Final Connections:
3. Begin tightening the couplings together by
hand, then using two wrenches (it is important that
ONLY the nut on the precharged lines be turned,
the other parts of the couplings must NOT be
allowed to turn or the process will tear out the
diaphragms and they will be loose in the
refrigeration system) tighten the coupling until it
bottoms out or a definite increase in resistance is
felt.
TIGHTENING THE QUICK CONNECTS
Schrader
Valves
••The 1/2 inch discharge line goes to the
icemaker fitting marked “discharge line”.
••The 3/8 inch liquid line goes to the icemaker
fitting marked “liquid line.”
Liquid Line
Ice Maker Connections
4. Using a marker or pen, mark a line lengthwise
from the coupling union nut to the bulkhead. Then
tighten the coupling and additional 1/4 turn. As the
nut turns, the line will show when 1/4 turn is made.
5. After all connections are made, and after the
king valve has been opened, check the couplings
for leaks.
Note: The system charge is contained in the
receiver tank of the ice machine. Only "holding"
charges are present in the "precharged" tubing or
the condenser.
March 1994
Page 6
FOR THE ELECTRICIAN
HAND
DISCONNECT
SWITCH
CME650R
SEE NAMEPLATE for current requirements to
determine wire size to be used for electrical
hookup. When the cuber and the remote
condenser are connected, each must be grounded
to the other using the ground screws provided in
the respective junction boxes. The cuber then
requires a solid chassis to chassis earth ground
wire. See Wiring Diagram.
Be certain the cuber is connected to its own
electrical circuit and individually fused. Voltage
variation should not exceed ten percent of the
nameplate rating, even under starting conditions.
Low voltages can cause erratic operation and may
be responsible for serious damage to the
icemaker.
ELECTRICAL CONNECTIONS
The remote condenser is designed to be powered
from the ice machine. There is a separate
electrical junction box at the back of the ice maker
for the remote condenser. Wire the remote
condenser to the ice maker in accordance with
local and national electric codes. All outdoor wiring
must be in rain proof conduit.
The condenser fan motor will run whenever the
compressor is running.
Electrical connections are made at the rear of
the icemaker, inside the junction box.
All external wiring should conform to the
national, state and local electrical code
requirements. Usually an electrical permit and
services of a licensed electrician will be
required.
REMOTE CONNECTION
INTERCONNECTING
WIRES
October 1994
Page 7
CME650R
ELECTRICAL CONNECTIONS: KCMR230 Kit
When 2 ice machines are connected to 1 remote
condenser and the fan motor is powered from the
ice machines, a relay kit is required to maintain
power to the fan motor.
All external wiring should confrom to the national,
state and local codes.
1. Attach the control box of the KCMR230 to a
permanent location that is convenient for each ice
machine’s connection and for future service.
Attach a solid earth ground wire to the Ground
Screw.
2. Route connecting wires from the first ice
machine’s fan junction box and connect to the
relay kit terminal strip marked: No. 1 Ice Machine.
3. Route connecting wires from the second ice
machine’s fan junction box and connect to the
relay kit terminal strip marked: No. 2 Ice Machine.
4. Attach wires at the KCMR230 terminal strip
marked: To Remote Fan, and route them to the
remote condenser junction box.
5. Make the proper electrical connection at the
junction box.
Conform To All Applicable Codes
Remote Condenser
Junction Box
Possible Location
for KCMR230
Fan Juntion Boxes
KCMR230 Installation
March 1994
Page 8
KCMR230: Phasing Check
Check the phasing of the fan relay electrical circuit
as follows:
Note: 3 phase machines must have the same "leg"
or line connected to L3 on BOTH ice machine’s
contactors and if there is "Wild Leg" current, it
must be connected to L3 on BOTH ice machines.
A. Before initial start up: Compare the illustration
of the KCMR230 terminal strip to the connections
at the KCMR230.
••Terminals #1 and #3 must be connected to the
same side of the line (such as L1).
••
Terminals #2 and #4 must be connected to the
same side of the line (such as L2).
CME650R
B. After initial start up, test with a volt meter
(compressors must be operating for this test).
1. Switch on ice maker #1, then ice maker #2.
2. Test with a volt meter between terminals #2 and
#4, then between terminals #1 and #3.
Compare the data to that in this table.
Test Terminals Correct Voltage Readings
1 - 2 Full Voltage (208-230)
1 - 3 No Voltage
2 - 3 Full Voltage
2 - 4 No Voltage
3 - 4 Full Voltage
1 - 4 Full Voltage
October 1994
If there is full voltage where there should be No
voltage:
••Switch off ice maker #2 (compressor switch
also), and then switch off ice maker #1.
••Reverse the connections at the KCMR230
terminal strip marked ice maker #1 (put the wire
that was on 1 on 2 and the wire that was on 2
on 1).
Do all wiring with the electrical power
disconnected to BOTH ice makers at the
source.
Page 9
Loading...