The REMCOR ”CH” Series Recirculating Liqu id Chiller is designed to provide an accurate, reliable, and user-friendly system for cooling a continuous flow of pure liquid and keep that liquid a t a constant temperature in various closed loop or tank coolin g applications.
The ”CH” Series Chiller consists of an air--cooled refrigeration system housed in a sturdy shee t metal frame and
cabinet. A standard pump and insulated liqu id reservoir package provides a complete liquid cooling and circulating system.
The ”CH” Series Chiller is designed to operate in a clean laboratory or industrial environment where ambient
temperatures ran ge from 40 to100° F (5 to 38° C). With proper installation, operation, and maintenance, the
”CH” Series Chiller will provide years of trouble free service.
UNPACKING AND INSPECTION
This unit was thoroughly inspected be fore leaving the factory and the carrier has accepted and signed for it.
Any d amage or irregularities should be noted at the time of delivery and immediately reported to the carrier. Request a written inspection report from the Claims Inspector to substantiate any necessary claims. In the event
that a n immediate replacement is necessary,please contact REMCOR Chiller Sales at 1--800--551--4423.
THE CHILLER MUST BE LOCATED NEAR A PROPERLY GROUNDED ELECTRICAL OUTLET. THE CIRCUIT SHOULD BE FUSED AND NO OTHER ELECTRICAL APPLIANCE SHOULD BE CONNECTED TO THE
CIRCUIT. ALL ELECTRICAL WIRING MUST CONFORM TO NATIONAL AND LOCAL ELECTRICAL
CODES.
The Chiller must be located in a well ventilated, indoor a rea where ambient temperatures will remain above
40_ F (5_ C) and will never increase above 100_ F (38_ C). To obtain optimum cooling capacity ,the ambient
temperature should be at or below 80_ F (27_ C).
1
92266
It is very important that the air intake and discharge sides of the chiller are not obstructed by other free standing
objects. A minimum of two feet of space on all four sides of the chille r will be sufficient to prevent air flow obstructions.
It is also important to direct any hot air discharge from other equipment away from the air intake side of the chiller. Condenser air entering the “CH” unit should be below 100_ F (38_ C) .Condenser air temperatures above
100_ F (38_ C) can cause the high pressure safety control to shut down the unit.
Electrical Connections
All wiring must conform to the National Electric Code and any applicable local codes.
The “CH” unit must b e PERMANENTLY wired by means of electrical conduit to a properly fused disconnect of
proper amperage OR wired to a prop erly rated power cord and plugged into an outlet with the appropriate disconnect a nd amperage rating. The electrical junction box includes a four terminal strip for power supply connections. The DATA PLATE located beside the junction box indicates the phase, voltage and amperage of the
chiller.
Process Connections
Follow standard plumbing practices and local codes in making liquid connections. The Chiller inlet and outlet
connections are 3/4”--inch FPT couplings. It is recommended that 3 /4--inch I.D. or larger flexible hose and tube
fittings be used as process connections. Lines should be routed with as few bends as possible. Prevent lines
from running near radiators, hot water pipes, etc. Any lengths of tubing that are exposed to high ambient temperatures should be insulated to prevent condensation and/or sign ificant liquid heat gain.
Once the system has been properly plumbed, it is important that the circulation system be filled with liquid. Th e
reservoir can be filled by removing the fill port cap located on top of the Chiller. After ensuring that the drain is
closed, fill the reservoir via the fill po rt with pure liquid until the liquid level sight glass on the front of the unit indicates ”FULL”. Th e fill port cap should then be replaced prior to operation.
DATAPLATE/SERIAL NO.
35.138
37.638
CONTROL PANEL
TEMPERATURE CONTROLLER
FILL PORT
PRESSURE GAUGE
”FULL”
RESERVOIR LEVEL INDICATOR
DRAIN
38.224
14.000
JUNCTION BOX
TERMINAL STRIP
INTERLOCK STRIP
(IF APPLICABLE)
OUTLET
INLET
21.963
FRONT
92266
REAR
FIGURE 1. “CH” SERIES CHILLERS
2
Chiller Operation
WARNING: NEVER OPERATE THE CHILLER WITH THE PANELS REMOVED.
ALWAYS USE THE POWER SWITCH TO TURN OFF THE CHILLER WHEN IT IS NOT BEING
USED.
ALWAYS ENSURE THAT ALL AIR INLETS AND OUTLETS ARE FREE FROM OBSTRUCTION.
BE SURE THAT THE RESERVOIR IS FILLED WITH FLUID PRIOR TO POWERING UP THE UNIT.
Process Liquid Flow
After ensuring that the system piping is free from ob struction, that all valves are open, and the reservoir is full,
push the CONTROL POWER switch to the ”ON” p osition. The pump should now be operating.
On three phase units such as the CH1502 and CH1503, it is important to check the pump rotation. Remove the
left sid e panel, push the POWER button in, and observe the motor shaft. Make sure that the shaft is rotating in
the direction of the a rrow indicated on the pump housing. If the rotation is incorrect, reverse two of the three incoming power supply leads at the terminal strip.
NOTE: Running the pump in reverse for too long will result in permanent pump damage. The Phase
Protection/3--Phase Monitor Option will prevent the pump from operating backwards. See the full description of the option for complete explanation.
All Chillers with pumps are supplied with a pressure reg ulating valve on the pump discharge. This valve is preset a t the factory to ensure that system pressure does not exceed the capabilities of the pump motor and/or piping. If this valve requires ad justment, please contact the REMCOR Service Group for the proper setting
procedure and p ressures.
Once the flow has been established the thermostat can be p rogrammed to the desired set--point.
Phase Protection / 3--Phase Monitor Option
The 3--Phase Monitor detects phase loss, low voltage, and phase reversal b y continuously monitoring the
3--Phase power lines for abnormal conditions. When correct voltage and phase rotation are applied, the internal
relay will en ergize. A fault condition will de--energize the relay. When the fault is corrected, the monitor will automatically reset. Both T rip and Norm condition indicators are provided on the relay to aid in adjustment and sys-
tem trouble--shooting.
This control is located in the enclosure labeled “Monitor” on top of the electrical box.
Phase Protection / 3--Phase Option Adjustment
The following procedure will a llow the 3--Phase Monitor to achieve a trip point just below the nominal phase-tophase voltage, where the unit is applied.
Rotate the adjustment control fully clockwise, or until the red (Trip) indicator illuminated. Slowly rotate the
adjustment control in a counter-clockwise direction, just until the green (Norm) indicator illuminates. At this point,
the 3--Phase Monitor is the most sensitive to irregular power line condition s. If nuisance tripping occurs, turn the
control slightly further counter--clockwise.
3
92266
COOLING OPERATION
REMCOR CHXXX SERIES CHILLER
CONTROL
POWER
FIGURE 2. CONTROL PANEL
Temperature Indicator/Controller (Thermostat)
COOLING
WHITE INDICATOR/PUSH BUTTON
SAFETY
CONTROL PANEL
RED INDICATOR
GREEN INDICATOR
Combines a precise temperature control and easy programmability with a convenient LED temperature
readout that indicates system liquid temperature (2_ F Differential). To adjust thermostat, see next section.
1. CONTROL POWER SWITCH/LIGHT
A simple ON/OFF push--bu tton that switches power to the 24 volt control circuit. When the switch is
pressed, the white light on the push--button illuminates to indicate that Chiller Control Power is present.
Light is no longer illuminated when button is returned to ”OFF” position.
2. COOLING LIGHT
A gre en light that illuminates to indicate that the refrigeration system is operating. This light may cycle on
and off in response to the thermostat or in response to HOT GAS BYPASS if the u nit is equipped with the
hot--gas bypass option .
3. SAFETY LIGHT
A red light that illuminates to indicate that a problem is present with the chiller. The safety light will illumi-
nate under the following conditions:
A.High Refrigerant Pressure
B.Low Refrigerant Pressure
C.Low Reservoir Level (Alarm also sounds)
D.Low Evaporator Temperature
It is important to note that each of these conditions will shut down the ”CH” unit. For additional protection to
your equipment, some models are equipped with a LOW FLOW INTERLOCK which terminates p ower to
your equipment in the event that liquid flow from the ”CH” unit drops below 1.25 GPM.
92266
4
START--UP
IT IS IMPORT ANT THAT THE LIQUID LEVEL SIGHT GLASS READS ”FULL”. IN THE EVENT THAT THE
RESERVOIR IS EMPTY, THE UNIT WILL REMAIN OFF UNTIL AN ADEQUATE LEVEL OF LIQUID IS ATTAINED. MAKE SURE CHILLER POWER IS ”OFF” PRIOR TO FILLING RESERVOIR.
Push CONTROL POWER button IN. All alarm indicators should be extinguished and the Chiller system will
cycle in order to maintain the established set-point. The Chiller is now ready for normal operation.
Thermostat Control
up
down
7
FIGURE 3. CH SERIES TEMPERATURE CONTROLLER
The following procedure should be followed to adjust the thermostat for any liqu id cooling application:
1. Push the ”SET” bu tton located to the right of the digital display. This will display the current set-point programmed in the thermostat.
2. The set-point can only b e adjusted while being displayed. To adjust the set-point, push the ”UP” or
”DOWN” button until the desired set point is displayed on the thermostat.
3. Once the desired set-point is displayed, wait several seconds and the thermostat will display the process
liquid temperature. The set-point can be viewed at any time by pressing the ”SET” button.
The parameter settings of the thermostat have been preset a t the factory. The range of the thermostat is
40_ F (5_ C) to 100_ F (38_ C). If operation outside of this range is desired , please contact the REMCOR
TECHNICAL SERVICE DEPARTMENT at 1--800--551--4423.
0
_F
out
set
CHILLER MAINTENANCE
WARNING: Disconnect electrical power before performing any maintenance on the Chiller.
Condenser
On air cooled chillers, the CONDENSER FINS should be cleaned by blowing compressed air through the condenser from the fan side. Dirt and debris accumulate on the condenser fins over time, and this build up can severely reduce the performance of the Chiller. Cleaning of the CONDENSER FINS should be done
approximately every three months, depending upon the cleanliness of your application.
Fan Motor
On air cooled chillers the condenser FAN MOTOR should be lubricated every 6 months with a few drops of SAE
10 oil.
5
92266
Pump Motor
The PUMP MOTOR should be lubricated with thirty drop s of SAE 20 oil once a year.
Circulation System
The CIRCULATION SYSTEM should be drained and flushed pe riodically to avoid build up and possible flow restriction caused by contaminants.
Filters/Strainers
The FILTER located insid e of the unit at the inlet of the pump should be cleaned periodically depending on applications. If a reduction in flow or cavitation of the pump occurs, remove the in--line FILTER, back-flush it with
water, rinse, and replace.
92266
6
TROUBLESHOOTING
WARNING: Disconnect electrical power to the Chiller to prevent personal injury before
attempting any internal maintenance. Only qualified personnel should service internal
components or electrical wiring.
TROUBLEPROBABLE CAUSEREMEDY
CHILLER DOES NOT
OPERATE, CONTROL
POWER LIGHT “OFF”
PUMP DOES NOT OPERATE,
BUT COOLING LIGHT IS
”ON”.
A.No Power To Unit.A.Check Main disconnect fuses,
wiring, and power lead to unit.
B.Defective Control Power
Switch.
C.Defective Control Transformer.C.Replace Transformer
D.Wrong Voltage Supplied to
Unit.
E.3--Phase Monitor tripped.E.Check for correct voltage level on
A.Line to or from Chiller is
restricted.
B.Internal or external filter is
blocked with debris.
C.Pump Contactor is
defective.
D.Damaged pump motor or
impeller.
B.Replace Switch
D.Supplied Voltage Must be within
± 10% of nameplate rating.
each phase of incoming 3--phase
power. Check for correct phase
rotation.
A.Inspect lines and remove any
obstructions.
B.Remove filter, back-flush, and
replace.
C.Replace.
D.Replace pump motor or impeller.
CHILLER DOES NOT COOL,
AND COOLING LIGHT IS
”OFF”.
PUMP RUNS, COMPRESSOR
”SHORT CYCLES”.
UNIT RUNS CONTINUOUSLY,
BUT IS NOT COOLING
PROCESS LIQUID ENOUGH.
A.Thermostat is defective.A.Replace Thermostat
A.No process load on
chiller.
B.Refrigerant is low.B.Check refrigerant charge.
A.Condenser is restricted.A.Clean condenser.
B.Unit low on refrigerant.B.Call Service.
C.Inefficient compressor.C.Call Service.
D.Unit is undersized for
application.
A.Increase process load.
D.Call REMCOR Chiller Sales Rep.
TROUBLEREMEDYPROBABLE CAUSE
CHILLER DOES NOT
OPERATE, BUT COOLING
LIGHT IS “ON” AND SAFETY
LIGHT IS “ON”.
A.Unit is operating under high
pressure conditions.
B.Unit is operating under low
pressure conditions.
C.Unit is operating under low
level conditions.
D.Unit is operating under low
temperature conditions.
A.Check for dirty condenser fins or
obstruction of chiller air intake.
Press high pressure manual reset
switch.
B.Check sight glass, if bubbles are
seen, leak check unit and
recharge with refrigerant.
or
If no bubbles are seen, replace
defective TXV.
C.Add liquid to reservoir via fill port.
or
If level is above switch, replace
float switch.
D.Low or no process liquid flow.
Ensure that there is adequate flow
through system plumbing.
or
Process liquid is too cold, below
35_ F. Increase thermostat
setting.
or
Defective thermostat, replace.
When servicing a REMCOR Chiller, it is important to note all information provided on the DATA PLATE located
in the upper rear of the unit. If technical assistance is needed, the REMCOR Service Technician will need this
information along with any description of the problem(s) you are encountering. The serial number and other
information will also be required when ordering replacement parts and any other Warranty Claims.
92266
8
13
13
17
41
10
43
42
46
51
28
16
27
39
48
17
49
35
32
11
15
23
24
25
35
26
44
47
33
45
50
6
33
50
52
5
35
32
39
36
16
9
17
22
12
17
38
37
34
40
1
3
4
31
21
19
18
16
36
2
7
29
14
30
20
35
8
FIGURE 4. CABINET SECTION EXPLODED VIEW
922669
CABINET SECTION
Index
No.
Part No. QtyName
1151661Frame
2152072Support Panel (CH 951)
154262Support Panel (CH 1502)
3611701Pump and Tank Ass’y (CH 951; See
611671Pump and Tank Ass’y (CH 1502; See
4701902Screw,HexHd,No.8-32By1/2-In.
5151591Support, Condenser
6151721Fill Port Ass’y
7151652Panel, Side (CH 951)
Brass (CH 1502)
34514251Plug, 1/4-MPT
35531571Tube, .750 I.D. By 3-In. Long
531571Tube, .750 I.D. By 6-In. Long
531571Tube, .750 I.D. By 7-In. Long
531571Tube, .750 I.D. By 8-In. Long
531571Tube, .750 I.D. By 10 1/2-In. Long
531571Tube, .750 I.D. By 22-In. Long
36319711Switch, Flow,Brass(CH1502)
37261982Bracket, Tank
38517041Fitting, 3/8-PVC
39532261Fitting, Coupler,3/8-PVC
40532251Fitting, 3/8-PVC By 1 1/2-In. Long
41323851Clamp, Pump to Motor
42323841Pump (CH 951)
323571Pump (CH 1502)
43301211Electrical Cord
44513501Tube, .250 I.D. By 30-In. Long
45503511Tube, .500 I.D. By 25-In. Long
46710423Clamp, Tube
47512801Fitting, Elbow,3/4-Barb(CH1502)
48703252Clip
9226613
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 W ilshireproduct, 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.
IMI Cornelius Offices
AUSTRALIA D P.O. 210, D RIVERWOOD, D NSW 2210, AUSTRALIA D (61) 2 533 3122 D FAX (61) 2 534 2166
AUSTRIA D AM LANGEN FELDE 32 D A-1222 D VIENNA, AUSTRIA D (43) 1 233 520 D FAX (43) 1-2335-2930
BELGIUM D BOSKAPELLEI 122 D B-2930 BRAASCHAAT , BELGIUM D (32) 3 664 0552 D FAX (32) 3 665 2307
BRAZIL D RUA ITAOCARA 97 D TOMAS COELHO D RIO DE JANEIRO, BRAZIL D (55) 21 591 7150 D FAX (55) 21 593 1829
ENGLAND D TYTHING ROAD ALCESTER D WARWICKSHIRE, B49 6 EU, ENGLAND D (44) 789 763 101 D FAX (44) 789 763 644
FRANCE D 71 ROUTE DE ST. DENIS D F-95170 DEUIL LA BARRE D PARIS, FRANCE D (33) 1 34 28 6200 D FAX (33) 1 34 28 6201
GERMANY D CARL LEVERKUS STRASSE 15 D D-4018 LANGENFELD, GERMANY D (49) 2173 7930 D FAX (49) 2173 77 438
GREECE D 488 MESSOGION AVENUE D AGIA PARASKEVI D 153 42 D ATHENS, GREECE D (30) 1 600 1073 D FAX (30) 1 601 2491
HONG KONG D 1104 TAIKOTSUI CENTRE D 11-15 KOK CHEUNG ST D TAIKOKTSUE, HONG KONG D (852) 789 9882 D FAX (852) 391 6222
ITALY D VIA PELLIZZARI 11 D 1-20059 D VIMARCATE, ITALY D (39) 39 608 0817 D FAX (39) 39 608 0814
NEW ZEALAND D 20 LANSFORD CRES. D P.O. BOX 19-044 AVONDALE D AUCKLAND 7, NEW ZEALAND D (64) 9 8200 357 D FAX (64) 9 8200 361
SINGAPORE D 16 TUAS STREET D SINGAPORE 2263 D (65) 862 5542 D FAX (65) 862 5604
SPAIN D POLIGONO INDUSTRAIL D RIERA DEL FONOLLAR D E-08830 SANT BOI DE LLOBREGAT D BARCELONA, SPAIN D (34) 3 640 2839 D FAX (34) 3 654 3379
USA D ONE CORNELIUS PLACE D ANOKA, MINNESOTA D (612) 421-6120 D FAX (612) 422-3255
LD004
4/21/98
92266
14
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9226615
IMI CORNELIUS INC.
CORPORATE HEADQUARTERS:
One Cornelius Place
Anoka, Minnesota 55303-6234
(612) 421-6120
(800) 238-3600
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