SP Scientific ULTRA-COOL User manual

R ECIRCULATING C HILLER O PERATOR ’ S M ANUAL
U LTRA -C OOL
W ITH MPC C ONTROL

Rev 008, 01/12 i
© SP Scientific 2012
Copyright © 2012 SP Scientific. All marks herein are used under license.
All brand or product names mentioned may be trademarks or registered trademarks of their respective
companies.
Part Number MNL-042-A
Rev 008, 01/12
SP Scientific 815 State Route 208 3538 Main Street
Gardiner, NY 12525 USA Stone Ridge, NY 12484
USA
[phone]
[phone]
SP Scientific Service [phone]
SP Scientific Service Fax [phone]
Website http://www.spscientific.com/
This Recirculating Chiller Operator’s Manual contains confidential and proprietary information of SP
Scientific and may be used only by a recipient designated by and for purposes specified by SP Scientific.
Reproduction of, dissemination of, modifications to, or the creation of derivative works from this
Recirculating Chiller Operator’s Manual, by any means and in any form or manner, is expressly
prohibited, except with the prior written permission of SP Scientific. Permitted copies of this document
must retain all proprietary notices contained in the original.
The information in this document is subject to change without prior notice. Always confirm with SP
Scientific that you are using the most current version of this document. SP Scientific is free to modify any
of its products and services, in any manner and at any time, notwithstanding the information contained in
this document.
THE CONTENTS OF THIS DOCUMENT SHALL NOT CONSTITUTE ANY WARRANTY OF ANY KIND,
EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE OR GIVE RISE TO ANY
LIABILITY OF SP SCIENTIFIC, ITS AFFILIATES OR ITS SUPPLIERS.
The terms and conditions governing the use of this Recirculating Chiller Operator’s Manual shall consist
of those set forth in written agreements with SP Scientific.

ii Rev 008, 01/12
© SP Scientific 2012
Important Symbols
WARNING! INJURY OR EVEN
DEATH MAY RESULT IF A
RECOMMENDATION MARKED
WITH THIS SYMBOL IS NOT
HEEDED.
CRUSH HAZARD. KEEP HANDS
CLEAR WHEN OPERATING DOOR.
ELECTRIC SHOCK DANGER!
USE APPROPRIATE CAUTION
TO AVOID INJURY OR DEATH.
CORROSIVE CHEMICAL. WEAR
SUITABLE GLOVES, SAFETY
GLASSES, AND PROTECTIVE
CLOTHING.
BURN DANGER! POTENTIALLY
HOT SURFACE. USE
APPROPRIATE CAUTION.
PROPERTY CAUTION! TO PREVENT
DAMAGE TO CHAMBER EQUIP-
MENT AND/OR LOAD, ADHERE TO
PROCEDURES MARKED BY THIS
SYMBOL.
DO NOT STORE FLAMMABLE
MATERIALS IN CHAMBER.
PRACTICAL OPERATING TIP.
THESE RECOMMENDATIONS
STREAMLINE UNIT OPERATION
AND PREVENT COMMON
OPERATOR ERRORS.
WEAR SAFETY GLASSES. EXPLOSIVE MATERIALS HAZARD!
KEEP OBJECTS AWAY FROM HEAT.
Safety Warnings
Always transport the unit with care. Sudden jolts or drops may damage the refrigeration system. 
Always observe all warning labels. 
Always turn off the unit and disconnect the line cord from the available power source prior to performing any 
service or maintenance procedures.
Always turn off the unit and disconnect the line cord from the available power source prior to moving the unit.

Always empty the reservoir / bath chamber prior to moving the unit. 
Never operate equipment with damaged line cords. 
Never operate the unit without cooling fluid in the reservoir / bath chamber. 
Never remove warning labels. 
Never operate damaged or leaking equipment. 

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© SP Scientific 2012
Warranty Information
Ultra-Cool recirculating chillers are warranted by SP Scientific to be free of defects in material and workmanship when
operated under normal conditions as specified in the instructions provided in this manual. Please take this opportunity
to locate the serial tag on your new Ultra-Cool and record the information below for future reference. SP Scientific also
recommends that you complete and return your unit’s warranty registration card.
Model Number
Serial Number
Part Number
Limited Warranty
SP Scientific (the “Company”) shall warrant each of its products against defects in material or workmanship for a period
of 12 months from the date of shipment (whichever comes first) provided that the product is used in a reasonable
manner under appropriate conditions and consistent with the applicable operating instructions.
The obligation of the Company shall be, at its option, to repair or replace, without charge any parts that prove to be
defective within the warranty period, if the purchaser notifies the Company promptly in writing of such defect. No
product shall be returned to the Company without prior approval of the Company.
This limited warranty shall cover the costs of parts and labor to repair or replace all defective product(s) at the Seller’s
factory. For all products installed by the Company and located within the Company service travel areas, this warranty
shall cover transportation charges to ship the product to and from the Company’s factory and/or the costs of travel,
room and board if the Company’s employees conduct repair at the Buyer’s location. In lieu of repair or replacement at
the Company’s factory, the Company may, in its discretion, authorize a third party to perform the repair or replacement
at the Buyer’s location, and at the Company’s sole expense.
The Company shall not be responsible for labor charges payable with respect to persons other than Company
employees. Replacement or repair of parts pursuant to this warranty shall not in any way extend the original warranty
period. The Company shall not be responsible for any unauthorized repairs, replacements or product modifications, nor
will it be responsible for any product failures resulting from such unauthorized repairs, replacements or product
modifications negligently or otherwise made by persons other than Company employees or authorized representatives
of the Company. The buyer shall assume transportation charges to ship the product to and from the Company’s factory
and the costs of travel, room and board if the Company’s employees conduct repair at the Buyer’s location within the
warranty period if the product was not installed by the Company’s and/or is not located within the Company’s service
travel areas.
THE COMPANY DOES NOT MAKE AND EXPRESSLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WITH
RESPECT TO THE SALE, INSTALLATION, DESIGN OR USE OF ITS PRODUCTS. ADDITIONALLY, THE
COMPANY SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF OR
ANY DEFECTS IN ITS PRODUCTS.
The Company’s employees are available to provide general advice to customers concerning the use of the Company’s
products; however, oral representations are not warranties with respect to particular products or their uses and may not
be relied upon if they are inconsistent with the relevant product specifications for the items set forth herein.
Notwithstanding the above, the terms and conditions set forth in the Company’s formal sales contracts shall be
controlling and supersede any inconsistent terms contained herein, and any changes to such contracts must be made
in writing and signed by an authorized executive of the Company.
WARNING! THE DISPOSAL AND/OR EMISSION OF SUBSTANCES USED IN CONNECTION WITH
THIS EQUIPMENT MAY BE GOVERNED BY VARIOUS FEDERAL, STATE OR LOCAL
REGULATIONS. ALL USERS OF THIS EQUIPMENT ARE URGED TO BECOME FAMILIAR WITH
ANY REGULATIONS THAT APPLY IN THE USERS AREA CONCERNING THE DUMPING OF
WASTE MATERIALS IN OR UPON WATER, LAND OR AIR AND TO COMPLY WITH SUCH
REGULATIONS.

iv Rev 008, 01/12
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Rev 008, 01/12 v
© SP Scientific 2012
Contents
Important Symbols...............................................................................................................................................ii
Safety Warnings...................................................................................................................................................ii
Warranty Information .......................................................................................................................................... iii
Introduction .................................................................................................................1
Overview..............................................................................................................................................................1
Key Features...................................................................................................................................................1
Installation and Startup ...............................................................................................3
Initial Inspection...................................................................................................................................................3
Setup and Installation ..........................................................................................................................................4
Physical Positioning ........................................................................................................................................4
Ambient Conditions.........................................................................................................................................4
Selecting a Process Fluid.....................................................................................................................................5
Deionized Water Compatible Systems............................................................................................................5
General Properties of a Process Fluid.............................................................................................................6
External Connections...........................................................................................................................................7
RS-232 Remote:..............................................................................................................................................7
37-pin Remote I/O...........................................................................................................................................7
Remote Temperature Sensor..........................................................................................................................7
Remote EMO Override....................................................................................................................................7
Plumbing Connections.........................................................................................................................................8
Electrical Connections .........................................................................................................................................8
Adding the Process Fluid.....................................................................................................................................9
Operation..................................................................................................................11
Overview............................................................................................................................................................11
System Start Up.................................................................................................................................................11
Power Up.......................................................................................................................................................12
System Shut Down........................................................................................................................................12
System Control..........................................................................................................13
Overview............................................................................................................................................................13
Manual Control...................................................................................................................................................13
Front Panel Switches ....................................................................................................................................13
Indicators.......................................................................................................................................................15
Hour Meter ....................................................................................................................................................17

Contents Ultra-Cool
vi Rev 008, 01/12
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Pressure Gauge and Bypass Valve...............................................................................................................17
Setting System Parameters ......................................................................................19
Overview............................................................................................................................................................19
Overview of Modifying Parameters................................................................................................................19
Menu Description...............................................................................................................................................20
Locks Menu (LOC).............................................................................................................................................20
RS-232 Parameters (232)..................................................................................................................................20
Miscellaneous Menu (Etc)..................................................................................................................................21
System Span and Alarms Definitions (SPAN)....................................................................................................23
Control Parameters (PID)...................................................................................................................................24
Maintenance .............................................................................................................27
Fluid System......................................................................................................................................................27
Checking Fluid Level.....................................................................................................................................27
Adding Fluid ..................................................................................................................................................28
Draining Fluid................................................................................................................................................28
Fuses.............................................................................................................................................................29
Preventative Maintenance..................................................................................................................................29
Air-Cooled Refrigeration Condenser .............................................................................................................29
Cleaning........................................................................................................................................................29
RS-232 Programmer’s Reference.............................................................................31
Overview............................................................................................................................................................31
Hardware ...........................................................................................................................................................31
Communications................................................................................................................................................33
Communication Data .........................................................................................................................................33
Data Format.......................................................................................................................................................33
Received Data ...................................................................................................................................................34
Transmitted Data ...............................................................................................................................................36
Transmitted Data Format...................................................................................................................................37
Acknowledge.................................................................................................................................................37
Error ..............................................................................................................................................................37
Value.............................................................................................................................................................37
Terminator.....................................................................................................................................................38
Commands and Codes ......................................................................................................................................38
Command Set ...............................................................................................................................................38
Alarm Codes..................................................................................................................................................45
RS-232 Error Codes......................................................................................................................................46
Sample Program................................................................................................................................................49
Program.........................................................................................................................................................49
Appendix A: Troubleshooting....................................................................................51

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© SP Scientific 2012
Chapter
1
Introduction
Overview The Ultra-Cool is a recirculating chiller: a device that controls the temperature of a
process by removing heat using a recirculating fluid. This fluid flows from the cooler to
the process and back in a closed loop with the fluid acting as a heat transfer medium.
From this point forward in the manual, the item or set-up you desire to cool will be
referred to as the process. Additionally, your unit will be referred to as the chiller,
recirculator, or recirculating cooler.
This chiller is a mechanically refrigerated system designed to provide a continuous
flow of temperature-controlled fluid to an external process in order to maintain a
desired temperature. The system is designed to operate on a continuous basis with
minimal interruption for maintenance and service.
The unit cabinet contains the refrigeration system, a pump to recirculate the cooling
fluid, low voltage system control circuit boards, and high voltage electrical
components. The unit is supported by heavy duty, lockable, full-swivel casters.
Recirculating fluid inlet and outlet ports are provided on the rear of the unit for
connecting hose, tubing, or pipe to and from the process to be cooled. These
threaded fittings can be easily adapted to any specific connector that is required.
Key Features
Compact design to minimize space requirements. 
Reliable, self-contained mechanical refrigeration. 
Air or Water cooled. 
Wide temperature range to handle a variety of temperature control 
requirements.
Deluxe Digital Control.

± 0.5 °C Stability. 
RS-232 Computer Interface. 
Easy reservoir access for filling recirculating fluid. 
Electronic fluid level monitoring. 
High pressure bypass valve for controlling fluid pressure to the process. 

Introduction Ultra-Cool
2 Rev 008, 01/12
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© SP Scientific 2012
Chapter
2
Installation and Startup
Initial Inspection
Your Ultra-Cool recirculating chiller was carefully packed and thoroughly inspected
before leaving the SP Scientific factory. However, in the unlikely event that shipping
damage has occurred, retain all packing material and contact your freight carrier
immediately.
DO NOT ACCEPT DAMAGED SHIPMENTS FROM A CARRIER WITHOUT A SIGNED
NOTIFICATION OF DAMAGES.
Upon receiving your shipment, inspect all contents of your equipment for damage.
Uncrate and/or unwrap the unit. Carefully remove all packing material from the unit
and inspect for visible damage. Check packing material for small accessory items.
Inspect the inside of the unit and related parts for visible damage and leaks. Check for
visible liquid at or near the base of the unit. The bath chamber should be clean and
dry.
If concealed damage or loss is discovered, contact the freight carrier immediately.1
Keep all contents, packing material and related paperwork intact until a written report
is obtained.
Note: SP Scientific will cooperate in the matter of collecting your claim, but is not responsible
for the collection or free replacement of the material. When possible, replacement parts will be
shipped and invoiced to you, making them a part of your claim.
1“Concealed damage or loss” refers to damage or loss that does not become apparent until the merchandise has been
unpacked and inspected. Should damage or loss be discovered, you may make a written request for inspection by the carrier's
agent within 15 days of the delivery date. You may then file a claim with the freight carrier or SP Scientific, depending on the
terms of your shipment. If your shipment was “FOB Destination” file your claim with SP Scientific and include the inspection
report and any other supporting documents. If your shipment was “FOB Shipping Point” file your claim with the freight carrier
and include the inspection report and any other supporting documents.

Installation and Startup Ultra-Cool
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Setup and Installation
NEVER PLACE THE UNIT IN AND AREA WHERE EXCESSIVE HEAT, MOISTURE OR
CORROSIVE MATERIALS ARE PRESENT.
The area where you place the unit should be smooth, level, and capable of safely
supporting the weight of the machine. Space should be provided so that air can
properly circulate around the unit. If obstacles are blocking the airflow, the compressor
may overheat. This reduces the level of performance, and can lead to early
compressor failure.
The environment should be well ventilated to prevent excessive build up of heat.
Normal room ventilation is usually adequate.
Physical Positioning
DO NOT LIFT THE CHILLER MANUALLY. USE LIFTING EQUIPMENT RATED TO HANDLE THE
WEIGHT OF THE CHILLER IF LIFTING IS REQUIRED.
All tie-ins and attachments (including plumbing) to the unit should be able to
accommodate the expected displacement of the equipment and surrounding structure
in the event of incidents such as earthquakes.
The chiller is equipped with four lockable casters. For additional stability, brackets that
lock around the casters may be installed to secure it against seismic activity.
Ambient Conditions
This unit is designed for operation in a normal indoor environment (systems should
not be mounted outside or otherwise exposed to the elements). The environment
should be free from air containing large amounts of moisture, salt or sulfur. If your
system utilizes an air-cooled condenser, the fan in the system draws ambient air
across the condenser (radiator) to cool the refrigerant. The ambient air temperature
requirements are:
Ambient Air Requirements
55°F to 69°F (12°C to 21°C) Acceptable
70°F to 75°F (21°C to 24°C) Ideal
75°F to 80°F (24°C to 27°C). Acceptable, but some degradation of the cooling capacity of the
unit should be expected.
80°F to 85°F (27°C to 29.5°C) Expect reduced reliability. Warranty may be voided
Over 85°F (Over 29.5°C) Not Acceptable, warranty will be Voided.

Ultra-Cool Installation and Startup
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© SP Scientific 2012
Selecting a Process Fluid
This recirculator is designed for operation with a host of industry standard fluids. The
fluid you choose will depend on what temperature range is required. Ethylene Glycol
and water (60/40 mix) is an inexpensive and readily available fluid for –25°C to +60°C.
For a fluid outside this temperature range, SP Scientific suggests using HT-30
Silicone Oil for –60°C to +100°C.
There are other fluids available, but to avoid potential application problems and to
speed troubleshooting; it is suggested that one of the fluids mentioned above be used.
DO NOT USE AUTOMOTIVE ANTI-FREEZE (it contains clotting agents). If for some
reason one of the above fluids is not suitable, and you select a different one, be sure
that it has a viscosity of less than 20 centistokes over the full temperature range of the
unit.
Note: All of the above mentioned fluids have viscosity of less than 20 centistokes across their
useable temperature ranges.
Since most systems have capability to achieve temperatures below 0°C, water should
not be used as a process fluid.
Fluid Temperature
Range (°C) Flammability Toxicity Dielectric
Ethylene Glycol/Water (60/40 mix) -25 / +60 Low Low Low
HT-30 Silicone Oil
(Recommended) -60 / +100 Low Very Low High
Deionized Water Compatible Systems
The deionized water compatible systems offer an accessory deionization cartridge.
This cartridge helps inhibit scaling and corrosion within the fluid loop. The cartridge kit
can be purchased from SP Scientific at 800-431-8232. To protect your process, SP
Scientific strongly recommends use of these cartridges if you are using a SP Scientific
Deionized Water Compatible system and deionized water.

Installation and Startup Ultra-Cool
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General Properties of a Process Fluid
Expansion/Contraction
It is important to note that some fluids expand as much as 14% from +25°C to
+125°C. Do not confuse contraction of the fluid for fluid losses.
Fluid Creep
Fluids will find any non-sealed connection.
Dissolved Gases
At room temperature the fluid contains dissolved gas. As the fluid temperature is
increased the amount of dissolved gas decreases dramatically, causing excess gas to
be released from the fluid. This release of gas should not be mistaken for boiling of
the fluid.
Water Solubility
Process fluids are water-soluble. After long periods of operation at low temperatures
water will mix with the fluid and decrease the performance of the system. To remove
the excess water, warm the fluid to room temperature and pump the fluid through a
molecular sieve or desiccant material. Alternately, simply run the system at
temperatures over 100°C, this will boil off any water present in the fluid (Only applies
to the systems that are capable of temperatures over 100°C).
Low surface tension and high vapor pressure
This means that the fluid evaporates very easily and that any improperly sealed joints
will leak.

Ultra-Cool Installation and Startup
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© SP Scientific 2012
External Connections
CAUTION: REMOTE CONNECTIONS SHOULD NOT BE RUN NEAR OR PARALLEL TO AC
POWER LINES OR IN THE VICINITY OF EQUIPMENT THAT GENERATES LARGE ELECTRICAL
FIELDS.
RS-232 Remote:
To comply with Semi-S2 requirements, the RS-232 cable should be shielded with
ferrites.
37-pin Remote I/O
To comply with Semi-S2 requirements, the 37-pin cable must be shielded.
Remote Temperature Sensor
An external 100-ohm RTD sensor is provided for remote control and temperature
display.
Remote EMO Override
Ensure the assembled Remote EMO override CPC connector, labeled RC-1462-A-1,
is inserted into the “Remote EMO” receptacle on the rear of the machine. If you do
not have the EMO Override CPC connector installed your machine WILL NOT
START.

Installation and Startup Ultra-Cool
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Plumbing Connections
SP Scientific provides input and output lines for the Process Fluid. To tie these lines
into your process, you will need:
1” Fittings (for 1” OD male pipe thread).

1” ID tubing (minimum). 
Pipe Insulation. 
If water-cooled you will also need:
Water Supply capable of delivering 4-6 GPM at 30-60 Psi. Within a

temperature range of 5 °C and 25 °C (41 °F and 77 °F).
Any fittings and pipes necessary to make this connection.

The plumbing that runs to and from the process should be insulated. Closed cell pipe
insulation will work for most applications. It can be purchased from any local
refrigeration or plumbing supply house.
Electrical Connections
The voltage and frequency requirements are specified on the serial tag on the rear of
the unit. Standard variances in frequency (±3Hz) and voltage (-5%, +10%) are
allowed. Verify that the facilities voltage matches the requirement for the machine.
The electric service wiring must be of a large enough wire gauge that the voltage is
maintained to the receptacle even when a full load is applied to the receptacle.
Additionally, one should measure or monitor the receptacle voltage while that
receptacle is under load.
Note: The acceptable voltage variance for 460V units is ±5%.
SP Scientific provides an electrical box and a circuit breaker for your electrician to
utilize. It is intended that this machine be hardwired into your electrical system.
Ensure the MAINS breaker switch on the rear of the machine is in the OFF position
when performing electrical work. When the MAINS breaker is moved to the ON
position, the MAINS light on the front panel should be illuminated.
Note: If PHAS is displayed on the LED, the 3-phase power is wired incorrectly and you will
need to consult an electrician to correct the wiring. The machine will not run until this is
corrected.

Ultra-Cool Installation and Startup
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© SP Scientific 2012
Adding the Process Fluid
At this point the Ultra-Cool should be hooked up to the proper electrical service and all
plumbing necessary for operation should be in place and sealed.
Make sure the drains are closed. These are two black hoses at the rear of the
1.
unit. Both drain lines should be plugged and have hose clamps to ensure the
plugs stay in place.
Plug in the provided 9-pin jumper (jumps pins 5 & 6) into the Remote EMO.
2.
Switch ON the breaker on the back of the machine. 3.
The white MAINS light should illuminate. 4.
Pull out the red PUSH TO STOP button. 5.
One bar will be displayed on the LED (indicating the reservoir is empty). 6.
LED Fluid Level Alarm
_ _ _ _ Reservoir Full Reservoir full
_ _ _ Normal Normal operation level
_ _ Fluid Low Flashes “rEFL” (Refill)
_ Critical Level Alarms sound, unit shuts down.
ALWAYS USE CAUTION WHEN HANDLING FLUIDS, FILLING OR DRAINING THE SYSTEM
RESERVOIR, OR WORKING IN OR AROUND THE CHILLER.
ALWAYS WEAR PROTECTIVE EYEWEAR WHEN OPERATING THE CHILLER.
To add fluid:
Remove the reservoir cap on the top of the unit.
7.
Add process fluid to reservoir.
8.
The LED will display _ _ _ _ (indicating the reservoir is full). 9.
Press the green START button. 10.

Installation and Startup Ultra-Cool
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When the LED indicates _ _ press the square STOP button. 11.
Add fluid until is full. 12.
Restart the pump by pressing the green START button. 13.
Continue this process until the entire fluid loop is primed and the reservoir is 14.
full.
Replace the reservoir cap.
15.
Your unit is now fully installed.

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© SP Scientific 2012
Chapter
3
Operation
Overview The Ultra-Cool Recirculating Chiller has evolved from a line of state of the art, industry
proven chillers manufactured by SP Scientific for a quarter century.
The MPC (Deluxe Digital Control) proffers multiple capabilities for interfacing with your
process. The RS-232 computer interface offers External Contact Closure (Remote
EMO), which allows full safety interlocking between the Ultra-Cool and your process.
It also affords an External RTD Temperature Sensor, which allows for precise
measurement and temperature control at the process.
The MPC controller uses PID (proportional, integral, derivative) settings to control the
heating and cooling of the process fluid. It is capable of controlling process
temperature to within ± 0.5°C. The parameters necessary for this level of control are
factory preset based on average user requirements. Depending on your application it
may be necessary to fine-tune these parameters. Information on how to do this is
provided in Setting System Parameters.
It is important to remember that if the equipment is used in a manner not specified by
the manufacturer, the performance of the equipment, and the protection provided by
the equipment itself, may be impaired.
System Start Up
Before applying power to the system:
Ensure that all external connections are in place.

Verify that all plumbing is secure with no leaks. 
Ensure electrical cords are properly installed. 
Ensure that the Remote EMO is plugged in to the connector on back of the 
machine. If the Remote EMO is not being used, the provided ‘short circuit’
plug should be in its place. (The machine will not run otherwise)
IF AT ANY TIME AN ALARM OCCURS, PRESS THE STOP BUTTON AND CORRECT THE FAULT
BY REFERRING TO INFORMATION IN THE SYSTEM SAFETIES & ALARMS AND
TROUBLESHOOTING SECTIONS OF THE MANUAL

Operation Ultra-Cool
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Power Up
To power up the unit:
On the front panel, push the red PUSH TO STOP button in.
1.
Switch the MAINS circuit breaker ON. 2.
The white MAINS light should light on the front of the unit. 3.
Pull the red PUSH TO STOP mushroom switch out. 4.
The LED display should show _ _ _ or _ _ _ _ . 5.
These bars indicate the level of the fluid in the reservoir. 6.
If _ or _ _ is displayed, Process Fluid must be added to the system. 7.
Remove reservoir cap and fill with fluid until four bars are lit _ _ _ _ . 8.
Press the green START button. 9.
The white RUN indicator should light up. 10.
The LED readout will toggle twice between SP (for setpoint) and the present 11.
setpoint value, then it provides a steady display of the present process
coolant temperature.
Press the up/down arrows to adjust the setpoint.
12.
Press the white PUMP button to start the pump. 13.
The green indicator light to the left of the PUMP button and the green LED on 14.
the button itself will light up.
Press the white REFR button to start the compressor.
15.
Note: If the LED’s indicate that the pump and refrigeration switches are ON, the
microprocessor will sequence the pump and compressor.
The green indicator light to the right of the REFR button and the green LED 16.
on the button itself should light up.
The COOL and HEAT LED’s located below the PUMP and REFR buttons light
17.
up to indicate whether the cooling or heating cycle that is being performed.
This is normal and should not be considered an alarm.
System Shut Down
To shut down the unit:
Press the STOP button on the front panel (not the red mushroom button).
1.
Under normal conditions, pressing the STOP button will shut down both the
compressor and the pump in an orderly manner.
Under routine conditions, the red PUSH TO STOP emergency off mushroom
2.
button does not need to be pushed in. However, it does serve as a redundant
off switch that can be used to guard against unintentional system energizing.
Note: If an External Contact Closure is being used, the EMERGENCY STOP switch
may also shut down external systems that may be running. Please check with your
operations staff prior to using this feature.)
On the back of the unit, move the MAINS circuit breaker to the OFF position. 3.