The Remote Condensing Unit P/N 416117 (230V, 60HZ) and P/N 496117 (230V, 50 HZ) consists basically of a
refrigeration compressor, a receiver tank, a fan cooled condenser coil, a head pressure control, and a
strainer/dryer mounted on an enclosed platform. The Remote Condensing Coil Unit (see FIGURE 1) is designed
to be used with any Evaporator Assembly with a rated temperature range of -10F to -32F. The Evaporator
Assembly is connected by refrigeration lines to and is refrigerated by the Remote Condensing Unit.
Operating VoltageSee Unit Nameplate
Current DrawSee Unit Nameplate
1
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Page 4
UNPACKING AND INSPECTION
NOTE: The Remote Condensing Unit was thoroughly inspected before leaving the factory and the carrier has accepted and signed for it. Any damage or irregularities should be noted at time of delivery (or
not later than 15 days from date of delivery) and immediately reported to the delivering carrier. Request
a written inspection report from Claims Inspector to substantiate any necessary claim. File claim with
the delivering carrier, not with IMI Cornelius Inc.
1. Unpack Remote Condensing Unit. Remove all shipping tape and packing materials.
2. Inspect and make sure Remote Condensing Unit is in good condition as instructed in preceding NOTE.
SELECTING LOCATION
Locate the Remote Condensing Unit so the following requirements are satisfied:
1. The Remote Condensing Unit must be installed in a location which will allow shortest possible refrigeration
lines route from Condensing Unit to the Evaporator Assembly.
2. Close to a properly grounded 208/230 VAC 60HZ or 220/240 VAC 50HZ single-phase electrical circuit with
a 30-amp minimum-rated disconnect switch (not provided) fused at 25-amps (‘‘slow-blow’’) or power circuit
connected through an equivalent HACR circuit breaker must be available to the Unit. Use No. 8 AWG copper wire, or larger, depending upon line length, in suitable conduit or BX sheath. POWER CIRCUIT MUST
BE MADE UP OF COPPER CONDUCTORS AND ALL WIRING MUST CONFORM TO NATIONAL AND
LOCAL CODES. MAKE SURE UNIT IS PROPERLY GROUNDED.
3. An extreme warm climate installation may require extra caution in Remote Condensing Unit location. Avoid
hot sunny locations and seek shaded area if possible. If Remote Condensing Unit is to be installed on the
rooftop, the use of a structure to shade the Unit from direct sun exposure and/or a platform extending Unit
an additional 18–inches above the is highly recommended and will improve performance. Ample space
(24 inches on all sides and 48 inches above Unit) must be provided for proper air circulation through the
Unit and also access for service and maintenance. DO NOT BLOCK AIR CIRCULATION THROUGH THE
UNIT.
4. If the Remote Condensing Unit is installed on the rooftop, the Unit must be installed in a level position and
must be anchored with adequate fastening devices.
INSTALLING REMOTE CONDENSING UNIT
(see Figures 2, 3, and 4)
1. Install Remote Condensing Unit meeting requirements of SELECTING LOCATION. The Unit must be
installed in a level position and must be anchored with adequate fastening devices.
NOTE: The following Refrigeration Lines Kits are recommended to connect the Remote Condensing
Unit to the Evaporator Assembly.
Part No.Description
300598025Refrigeration Lines Kit, 25-ft. long 90
300598050Refrigeration Lines Kit, 50-ft. long 90
2. Route refrigeration lines from Remote Condensing Unit to the Evaporator Assembly.
3. Connect ends of refrigeration lines to Remote Condensing Unit refrigeration connectors.
4. Remove four screws securing Remote Condensing Unit top cover, then remove cover for access to electrical control box.
5. Remove one screw securing electrical control box cover, then remove cover.
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2
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WARNING: The Remote Condensing Unit must be electrically grounded to avoided
possible fatal electrical shock or serious injury to the operator. A green ground wire is
provided inside electrical control box to connect power circuit ground wire which
electrically grounds the Unit.
6. Connect 208/230 VAC 60HZ or 220/240 VAC 50 H
ments of SELECTING LOCATION) to L1 and L2 terminals on contactor inside the Unit electrical control box
as shown in FIGURE 4. MAKE SURE POWER CIRCUIT GREEN GROUND WIRE IS INSTALLED UNDER
GREEN GROUND SCREW INSIDE ELECTRICAL CONTROL BOX TO PROPERLY GROUND THE UNIT.
POWER CIRCUIT MUST BE MADE UP OF COPPER CONDUCTORS AND ALL WIRING MUST CONFORM TO NATIONAL AND LOCAL ELECTRICAL CODES.
7. A 24 VAC power circuit, which must conform to national and local electrical codes, must be routed and
connected between the Evaporator Assembly Temperature Control and the Remote Condensing Unit. Purpose of the 24VAC power control circuit is to allow the Evaporator Assembly Temperature Control to control ‘‘ON’’ and ‘‘OFF’’ operation of the Remote Condensing Unit. Route and connect 24VAC power control
circuit between the Evaporator Assembly and the Remote Condensing Unit as follows:
A.Route 24 VAC power control circuit electrical wires through hole in end panel to inside of the Remote
Condensing Unit.
B.Connect 24 VAC power control circuit electrical wires to labeled 24 V grey and red wires hanging out
of the electrical control box.
C.Install electrical control box cover and secure with screw.
D.Route 24VAC power control circuit from Remote Condensing Unit to the Evaporator Assembly loca-
tion.
E.Refer to manual provided with the Evaporator Assembly for instructions to connect 24VAC power cir-
cuit to Evaporator Assembly Temperature Control.
Single-Phase electrical power circuit (meeting require-
Z
SERVICE AND MAINTENANCE
WARNING: Disconnect electrical power to Remote Condensing Unit to prevent personal
injury before attempting any internal maintenance. Only qualified personnel should service
internal components or electrical wiring.
PERIODIC INSPECTION
Make sure Remote Condensing Unit Condenser Coil is free from debris. Restricting air through the condenser
coil will decrease the refrigeration systems cooling efficiency.
LUBRICATION
The Remote Condensing Unit condenser fan motor must be lubricated once every six months with S.A.E. 20W
oil. DO NOT OVER OIL.
3
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Page 6
ELECTRICAL
CONTROL BOX
TOP COVER
TOP COVER
RETAINING SCREW(4)
COMPRESSOR
CONDENSER
COIL
CONDENSER
FAN MOTOR
REFRIGERATION
LINES CONNECTORS
1128
RECEIVER
TANK
FIGURE 2. PARTS IDENTIFICATION
4
Page 7
CLEANING CONDENSER COIL
CAUTION: Remote Condensing Unit is equipped with a condenser coil that must be
cleaned every 30 days. Allowing condenser coil to become clogged will cause refrigeration
system to overheat which will automatically shut refrigeration system down. After
condenser coil has been cleaned, high–pressure cutout sensing switch (located inside the Remote
Condensing Unit electrical control box) will automatically reset to restart the refrigeration system.
OPERATING IN THIS MANNER FOR PROLONGED PERIODS OF TIME COULD RESULT IN
COMPRESSOR FAILURE.
The Remote Condensing Unit condenser coil must be cleaned every 30 days. Circulating air, required to cool
the coil, is drawn in through the coil and is exhausted out through grilles on end and back of the Unit. Clean
condenser coil as follows:
1. Disconnect electrical power from Evaporator Assembly 24VAC Temperature Control.
2. Disconnect electrical power to Remote Condensing Unit at disconnect switch.
3. Remove four screws securing top cover on Remote Condensing Unit, then remove cover.
4. Clean condenser coil using vacuum cleaner, whisk broom, or a soft–bristle brush to remove any debris
from coil.
5. Make sure fan blade is not out of balance, is not bent, and is not striking any surface during rotation.
6. If the Remote Condensing Unit has been installed on the rooftop check and make sure roof area
immediately surrounding the Remote Condensing Unit is free and clear of any debris that may have
collected such as leaves, paper, trash, etc.
7. Install top cover on Remote Condensing Unit and secure with four screws.
8. Restore electrical power to Remote Condensing Unit at disconnect switch.
9. Restore electrical power to Evaporator Assembly 24VAC Temperature Control.
5
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THIS PAGE LEFT BLANK INTENTIONALLY
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6
Page 9
TROUBLESHOOTING
IMPORTANT: Only qualified personnel should service internal components or electrical wiring.
WARNING: If repairs will be made to Remote Condensing Unit, turn off electrical power to
Evaporator Assembly, then disconnect power to Remote Condensing Unit at disconnect
switch before proceeding.
TroubleProbable CauseRemedy
TROUBLESHOOTING REFRIGERATION COMPRESSOR
COMPRESSOR COOLS BUT
IS VERY NOISY ESPECIALLY
WHEN STOPPING AND
STARTING
COMPRESSOR COOLS, BUT
IS MODERATELY NOISY;
LOUD ENOUGH TO BE
NOTICED, BUT NO SHARP
BANGS OR CLATTERING
COMPRESSOR OPERATES
BUT REFRIGERATION
SYSTEM DOES NOT COOL
A.Compressor cools, but is very
noisy, especially when
stopping and starting. This is
either a broken suspension
spring or loose crank shaft
extension.
A.Compressor cools but is
moderately noisy, loud enough
to be somewhat annoying, but
no sharp bangs or clattering.
A.Look for a refrigerant leak or
oil at tubing joints. If
compressor is moderately
noisy and no leaks are
evident, it is probably a broken
valve inside compressor
A.Compressor must be changed.
A.This is probably a discharge or
suction tube rattling inside the
compressor. If noise level can be
tolerated, compressor need not
be changed. The noise will not
affect the performance or shorten
compressor life.
A.Compressor must be changed.
COMPRESSOR STARTS AND
OPERATES FOR A FEW
SECONDS, THEN STOPS
COMPRESSOR WILL NOT
START
Note: If all above checks have been made and compressor will not start, increase start capacitor value
by about 15% and try to start. This can be done two ways: (The substitute capacitor must have voltage
rating equal to or greater than the existing start capacitor) a. Remove existing capacitor and replace with
one having a 15% greater MFD rating or (step b). b. Wire capacitor that has 15% of the MFD rating in paral-
lel with the existing capacitor. c. Try to start compressor. If all the previous (steps a and b) will not
make compressor operate, label compressor ‘‘stuck’’ and replace.
A.Compressor running too hot
due to condenser coils
plugged with dust, lint, and
grease restricting cooling air
flow through the condenser
coil.
A.Check line voltage across ‘‘T‘’
terminals on contactor.
B.loose or disconnected wires.B.Correct the loose or
C.Check control circuit;C.Contactor must pull in.
D. Examine start capacitor for
signs of excessive heat (blown
up). Check for open by
connecting test cord and
checking amp draw.
A.Clean condenser coil with vacuum
cleaner, low-pressure
compressed air, or soft brush,
then allow compressor to cool and
restart.
A.Voltage cannot be less than 208 V
(60 HZ Unit) or 220 V (50 HZ Unit)
nominal to start compressor.
disconnected wires.
D.If no current is drawn (or very
little), capacitor is open and must
be replaced.
If capacitor is blown, look for
inoperable start relay or low
voltage..
7
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Page 10
TroubleProbable CauseRemedy
COMPRESSOR STARTS BUT
WILL NOT OPERATE FOR
MORE THAN A FEW
SECONDS
WARNING: To avoid electrical shock even after electrical power has been disconnected
from Unit, run capacitor must be discharged by momentarily touching both capacitor
terminals at the same time using an insulated handled screwdriver.
A.Inoperable Start Relay.
Note: To check relay, remove
wire from No. 1 terminal on start
relay and touch to No. 2 terminal. Start compressor and immediately remove wire from No.
2 terminal. If compressor starts
and operates, problem is in the
start relay.
B.Low Voltage.
Note: Remove compressor terminals cover and connect voltmeter test leads between ‘‘C’’ (top
terminal) and ‘‘R’’ (lower right
terminal). Start compressor. A
minimum of 208 VAC (nominal)
must be present to operate compressor
A.Replace start relay.
B.If less than 208 V (60 HZ Unit) or
220 V (50 HZ Unit) is present,
upgrade Unit power source.
C.Inoperative Run Capacitor.C.Inspect capacitor for bulges,
cracks, or any external
deformation. If found, assume
capacitor is inoperable and
replace. If none of the above
conditions are evident, disconnect
wires from capacitor. Connect test
cord to capacitor terminals.
Connect ammeter to one wire of
test cord, Plug test cord into
electrical outlet and record amp
reading. *See formula on next
page at end of this trouble topic.
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Page 11
TroubleProbable CauseRemedy
COMPRESSOR STARTS BUT
WILL NOT OPERATE FOR
MORE THAN A FEW
SECONDS (CONT’D)
D.Grounded or Shorted Motor
Windings.
D.Disconnect all electrical wires
from compressor terminals. Set
ohmmeter on 100,000 ohm scale.
touch one lead to copper line or
bare metal of compressor. Touch
other lead to each of the
compressor terminals in
succession. Continuity must not
be indicated. If an ohmmeter
reading is obtained, then
compressor is grounded and must
be replaced. To check for shorted
windings, set ohmmeter on 10
ohm scale. Attach one lead to ‘‘C’’
(top terminal). The reading should
be approximately 1 to 1-1/2 ohms.
Leave one lead on ‘‘C‘’ terminal
and touch other lead to ‘‘S‘’ (lower
left terminal).The reading should
be 3-1/2 to 5 Ohms. Leave one
lead on ‘‘S’’ terminal and touch
other lead to ‘‘R’’ terminal. This
reading should be exactly the sum
of the first two readings obtained.
If the resistance readings do not
fall within these limits, the
compressor is ‘‘shorted’’ or has an
‘‘open’’ winding and must be
replaced. Replace compressor.
2650xAmp
*Use amps reading in formula
voltsń60HZ
= M.F.D. to determine actual value of capacitor. If calculated actual val-
ue is 10% more or less than rated value, replace capacitor.
9
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Page 12
TROUBLESHOOTING
IMPORTANT: Only qualified personnel should service internal components or electrical wiring.
WARNING: If repairs are to be made to a product system, remove quick disconnects from
the applicable product tank, then relieve the system pressure before proceeding. If repairs
are to be made to the CO
system, stop dispensing, shut off the CO
2
system pressure before proceeding. If repairs are to be made to the refrigeration system, make sure
electrical power is disconnected from the unit.
TroubleProbable CauseRemedy
TROUBLESHOOTING REMOTE CONDENSING UNIT
supply, then relieve the
2
COMPRESSOR DOES NOT
OPERATE.
A.Evaporator Assembly not
A.Refrigeration not called for.
calling for refrigeration.
B.Electrical power to Remote
Condensing Unit turned off.
C.Electrical power to Evaporator
Assembly turned off.
D.No Remote Condensing Unit
power source. Blown fuse or
B.Turn on electrical power to
Remote Condensing Unit.
C.Turn on electrical power to
Evaporator Assembly.
D.Replace fuse or reset circuit
breaker.
tripped circuit breaker.
E.Loose, disconnected, or
broken wiring.
F.High–pressure cutout switch
tripped.
E.Tighten connections or replace
broken wiring
F.High-pressure cutout switch will
automatically reset after
refrigeration system pressure has
lowered (see CAUTION note
under CLEANING CONDENSER
COIL).
G.Low voltage.G.Voltage must be at least 208 V
(60 HZ Unit) or 220 V (50 HZ Unit)
nominal at compressor terminals
when compressor is trying to
start.
COMPRESSOR OPERATES
CONTINUOUSLY BUT DOES
NOT COOL SUFFICIENTLY
1128
H.Inoperable run capacitor, or
H.Replace inoperable part.
start relay.
I.Inoperable compressor.I.Replace compressor.
A.Refrigeration capacity is
exceeded by product
A.Reduce amount of product drawn
per given time.
overdrawing.
B.Air circulation through Remote
Condensing Unit condenser
B.Check and if necessary, clean
condenser coil as instructed.
coil is restricted.
C.Insufficient refrigerant charge.C.Check Remote Condensing Unit
sight glass for bubbles or liquid
break. Find and repair
refrigeration leak, then replenish
refrigerant charge.
35.*325069Machine Screw, S: Hex HD, No. 10-24 by 1/2-in. Long
36.325145Washer, # 1 0
37.325644Lug
38.324149-068Base
39.*187552Machine Screw, Phil RD HD, No. 8-32 by 1/4-in. Long (Not Shown)
40.309524-011Cord (Not Shown)
41.320734Self-Threaded Screw, Phil Pan HD. No. 6-32 by 3/8-in. Long
42.313802Snap Bushing
43.324208Pressure Switch, HI, 475 PSI
44.319960-005Edging, Grommet
45.324215Heater, 138 Watt, 220V. 60Hz
46.321818Button Plug
15
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Page 18
WARRANTY
IMI Cornelius Inc. warrants that all equipment and parts are free from defects in material and workmanship under normal use and service. For a copy of the warranty applicable to your Cornelius, Remcor or Wilshire product, in your country, please write, fax or telephone the IMI Cornelius office nearest you. Please provide the
equipment model number, serial number and the date of purchase.