Pro Refrigeration CHILSTAR Series User manual

Operations Manual

ii | Pro Refrigeration, Inc
Contents
1 Preface iii
CUSTOMER SERVICE iii
MANUFACTURE’S INFORMATION iii
RECEIVING & UNLOADING iii
WARNINGS & CAUTIONS iii
PRO CHILLER MODEL NUMBER 2
SYSTEM OVERVIEW 3
ELECTRICAL CONTROL PANEL 3
GLYCOLCIRCULATION&PROCESSPUMPS 3
GLYCOL STORAGE TANK 3
REFRIGERATION EQUIPMENT 3
SPIRAL DRUM EVAPORATOR 3
PUMPCURVESSUPPLIEDBYPUMPSERIES 4
INSTALLATION,OPERATION,&MAINTENANCE 6
WIRING 7
MAINTENANCE iv
PIPING 6
RECEIVING AND INSPECTION 6
SETTING EQUIPMENT 6
SYSTEM CHARGING 7
SYSTEM EVACUATION 7
PRE START-UP CHECK LIST 8
MASERIESCHILLERQUICKSTARTGUIDE 9
SYSTEM WARRANTY 14
FAULTY COMPONENT 15
WARRANTY REPAIR PROCEDURE 14
WORKMANSHIP FLAW 15
RESOURCES 16
TROUBLESHOOTING 21

Table of Contents | III
1 Preface
is manual is intended to be used in conjunction with
Pro Refrigeration, Inc Chiller Systems
is manual will guide you through the process of install-
ing, commissioning, and maintaining your Pro Chiller
System.
Receiving & Unloading
Before signing the Bill of Lading please complete the
following:
•Check Service Panels for Damage
•Conrm positive pressure on refrigerant pressure gauges.
•Remove from service panels and visually inspect all pip-
ing for broken and or cracked lines.
Please note any obvious, or potential damage on bill of
lading prior to signing. Contact Pro Refrigeration, Inc
immediately 800-845-7781 to report any damage.
Manufactured By:
Pro Refrigeration, Inc.
Pro Refrigeration is located in Auburn WA. Auburn is
located 30 miles from Seattle, WA in the shadow of Mt.
Rainier.
Physical Address:
326 8th ST SW
Auburn, WA 98001
www.prochiller.com
Mailing Address:
PO BOX 1528
Auburn, WA 98071-1528
Telephone: [phone]
Fax: [phone]
Customer Service
Please feel free to contact customer service with any
questions pertaining to this or any other Pro Refrigera-
tion, Inc product.
Customer Support Hours:
Monday-Friday
7am-5pm (Pacic Standard Time)
Telephone: [phone]
Fax: [phone]
Email: ser[email protected]
Warnings & Cautions:
roughout this manual warnings & cautions will be
issued containing pertenant information regarding the
safety of you and/or your equipment. ese messages
will be accompanied by the following symbols:
Warning
Caution

2| Pro Refrigeration, Inc
Pro Chiller Model Number Identication
PB230F14R4400-A
TYPEOFREFRIGERANT
R5= R507
R4 = R404A
R2 =R22
TANKCAPACITY
20 100 200 250 400 550 1000 1500
SS = STAINLESS STEEL (HEATED TANK)
CL = CLASSIC (NOTANK)
X = NONE
COMPRESSORMAKE
B = BITZER
C = CARLYLE
M = MANEUROP
E = EMERSON (COPELAND)
X = NONE
P= PROREFRIGERATION
NUMBEROFREFRIGERATIONCIRCUITS
1 2 3 4 5
CIRCUITHORSEPOWER
HERMETIC SEMI-HERMETIC
02 10
03 20
05 30
08 (7.5) 40
10 50
12
EVAPORATOR COUNT 1 - 70
CONDENSINGTYPE:
A = PACKAGED AIR-COOLED
HA = PACKAGED AIR-COOLED HIGH AMBIENT
R = REMOTE AIR-COOLED
RHA = REMOTE AIR-COOLED HIGH AMBIENT
W = WATER
X = NONE

Packaged Glycol Chiller Systems | 3
SYSTEM OVERVIEW
e following list of components are standard on all of our chiller systems. We oer a wide selection of compres-
sors and condensing units that are incorporated with these components to produce one of the most ecient chiller
systems available. A brief summary of the common Packaged Chiller Components:
ELECTRICAL CONTROL PANEL
All of our chillers are equipped with a control panel with an ETL listing approval. All of the components are
wired to the National Electrical Code guidelines. ere is no internal wiring required on our standard systems. An
electrician must simply supply the chiller with main power service. If chiller is purchased without a main electrical
disconnect switch, most local electrical codes will require one to be installed adjacent to the chiller control panel.
GLYCOL STORAGE TANK
All standard models of chillers are supplied with an insulated glycol storage tank. Our glycol tanks are constructed
of berglass, stainless steel, or polyethylene.
SPIRAL DRUM EVAPORATOR
Our high ecient U.L. Listed evaporator counter ows liquid refrigerant with the chilled glycol water. e inter-
nal nned copper tubing oers 3.7 times the surface area of standard smooth copper tubing. By manifolding the
evaporators together, we can maximize the eciency of the heat exchanger surface area. We oer a 5 year replace-
ment warranty for the evaporator.e warranty does not cover failures due to internal freezing of evaporators.
REFRIGERATION EQUIPMENT
We use only the highest quality refrigeration components available. All of our components meet industry stan-
dards and are easily sourced for maintenance and repair. On our packaged systems, all of the refrigerant piping is
factory installed. e system is charged with refrigerant and functionally tested prior to shipment.
GLYCOL CIRCULATION & PROCESS PUMPS
CIRCULATION PUMP
PROCESS PUMP
• is stainless steel centrifugal pump is designed to circulate whenever a cooling demand exists. e circu-
lation pump transfers glycol from the storage tank through the evaporator chiller drum and back into the
glycol tank. e chiller system is controlled so the system will not operate unless the circulation pump is
running .
• is stainless steel pump is specied to supply your process load with chilled glycol. e process pump
takes the chilled glycol from the tank, to the process cooling application, and returns it to the glycol stor-
age tank. is pump does not need to be running in order for the chiller to operate. Our smaller ChilStar
chiller systems do not have a glycol process pump, we utilize a single pump for supplying the glycol to the
plant as well as circulate to the evaporator.

4| Pro Refrigeration, Inc
PUMP CURVES SUPPLIED BY PUMP SERIES
1ST Series Pump Curve
2ST Series Pump Curve

Packaged Glycol Chiller Systems | 5
3ST Series Pump Curve
5SH Series Pump Curve

6| Pro Refrigeration, Inc
INSTALLATION, OPERATION, & MAINTENANCE INSTRUC-
TIONS
RECEIVING AND INSPECTION
Immediately upon receiving shipment, equipment should be inspected for evidence of any damage received in
transit. If shipping damage has occurred, a claim should be made with the transportation company, and your
equipment representative should be advised of the nature of the damage.
Equipment should be inspected for compliance with original order acknowledgment (equipment model numbers,
voltage, refrigerant, etc.).
SETTING EQUIPMENT
When choosing a location for chiller, the following items should be considered:
a.) Front and sides of chiller have available service area.
b.) Electrical enclosure is visible for viewing alarm/indicator lights.
c.) Chiller should be located as close to process cooling application as possible.
d.) Availability of electrical power.
e.) Availability of city (well) water for water cooled condensing. (As applicable)
f.) Adequate air ow for air cooled condensing.e condenser must be at least 48” away from any
obstruction
g.) Level surface to mount unit.
PIPING
1. All piping must be in accordance with applicable local and state codes.
2. Refrigerant piping should be designed and installed in accordance with recommended practices outlined in ARI
or ASHRAE piping guide.
3. Water piping (for water cooled condensers) should be installed to meet application requirements. Keep in mind
that condenser barrels may need to be cleaned, all piping should have unions to enable end cap to be removed
from condenser. Any piping exposed to freezing ambient conditions should be insulated.
4. Water piping (chilled water) should be installed to meet application requirements. Properly size chilled water
process piping to insure that ow is not restricted due to extreme line pressure. It is recommended that chilled
water piping be ran in either of the following materials: industrial ABS, copper, or stainless steel. It is not advised
to run chilled water piping in galvanized or black-ironpipe (unless you are using a glycol with rust inhibitors), the
propylene glycol will erode the pipe and could also cause bacteria problems. Glycol piping should be insulated to
prevent condensation.
5. Check all chilled cooling application process piping for leaks prior to adding glycol solution.
6. Circulate water (without glycol) through process piping system and check for leaks.

Packaged Glycol Chiller Systems | 7
7. Remove any piping debris, ushed from tank and process piping. Do not turn the chiller switch on until all
debris has been removed from the system.
WIRING
1. Select or install an adequate electrical service to handle chiller load. Service must comply with all applicable
electrical codes. Refer to the MCA (Minimum Circuit Ampacity) rating recorded on the blue chiller identication
label in your chiller’s electrical control panel.
2. If not factory installed, an electrical disconnect switch should be installed adjacent to chiller control panel.
3. After electrical service has been properly connected to the chiller, chiller should be energized for at least 24 hr. to
allow crankcase heaters to boil out any liquid refrigerant which may have migrated to compressor during shipment.
4. Check all motors for proper rotation. Pump motors must rotate clockwise when inspected from motor end
(the end where wire connections are made).To change pump motor rotation, reverse the L1 with L3 power wires.
Compressors can operate in either rotation, unless noted on compressor housing.
SYSTEM EVACUATION (for remote air cooled condensers or remote condensing
units)
1. With refrigeration piping completed and pressure checked, the system is ready for evacuation. Do not use com-
pressor to evacuate system. A quality vacuum pump capable of a 350 micron evacuation is necessary for adequate
and dependable system vacuum. Moisture and contaminants in the system not removed by proper evacuation can
cause corrosion on compressor windings, expansion valve freeze-up, oil sludge, and high discharge pressures.
2. Attach vacuum pump to low and high side of system through compressor service valves. If check valves are pres-
ent, insure that vacuum lines are attached to both sides of check valves. Evacuate to 350 microns. A micron reading
device is necessary to ensure that no moisture or contaminants are present before system is charged with refriger-
ant.NOTE: All of the remote air cooled and remote condensing unit chillers leave the factory with a dry nitrogen
holding charge. If system is not pressurized on arrival, re-pressurize with dry nitrogen and leak check system before
beginning the refrigeration piping installation.
SYSTEM CHARGING
1. With system evacuated to 350 microns or less, chiller is ready to be charged with refrigerant. All charging lines,
hoses and manifolds must be purged with refrigerant to prevent non condensable from being introduced to system.
2. Connect charging line to liquid line access ttings and admit liquid refrigerant into system until ow stops due
to pressure equalization between cylinder and system.
3. Connect charging line to suction tting up stream of accumulator and admit vapor into low side of system.
4. Energize equipment to the refrigeration circuit and continue to admit vapor into low side of system until refrig-
erant liquid line sightglass clears. (It may be necessary to defeat low pressure freeze control on initial start-up to
prevent nuisance cycling of compressor until pressure is above low pressure cut out set point).

8| Pro Refrigeration, Inc
MAINTENANCE
1. e system should be checked periodically to make sure that the refrigeration system(s) is operating properly. Use only the
services of certied refrigeration mechanics for inspection and maintenance checks or service operations.
2. WATER COOLED CONDENSERS - Water cooled condensers should be checked for scale build-up and blockage. is
should be checked annually; if high head pressure problems occur a check of the condenser should be performed.
3. AIR COOLED CONDENSERS - Air cooled condenser coils must be kept clean through a regular preventive mainte-
nance program.
4. Compressor oil level should be checked regularly. Oil should be visible in the oil sight glass (located on the side of the
compressor) . Compressor oil sight glass should be 1/4 to 1/2 full.
5. Periodically check all electrical connections for possible loose or corroded wiring.
6. Monitor system pressures daily and amperages monthly.
7. Check system glycol tank level and percentage for proper freeze point. e freeze point should be at least 20 degrees F
lower than the operating setpoint temperature.
PRE START-UP CHECK LIST
All Electrical Connections are tight, these may loosen during shipment
Main Disconnect Energized for 24Hr. to allow Crankcase Heater to boil any liquid refrigerant out of
crankcase.
Field Process Piping has been leak checked
VOLTAGE of Chiller System matches customer supplied VOLTAGE
Glycol / Water Solution freeze point is at least 20 F. (11 C.) below T-Stat Setpoint
Glycol Pump Motors Rotation is CLOCKWISE when viewed from motor end
Glycol Storage Tank is at least 80% Full
Pressure Bypass Valve tested. To test, Close a valve on the Glycol Supply and visually check for return
ow into storage tank.
Chiller location allows adequate air ow to and from Air Cooled Condenser. (Air Cooled Only)
Adequate water supply provided to Water Cooled Condenser (Water Cooled Only)

Packaged Glycol Chiller Systems | 9
CHILSTAR & MA SERIES CHILLER QUICK START GUIDE
e quick start guide is designed to be used in conjunction with a Pro Chiller System. As such, this guide as-
sumes that all that all electrical and mechanical devices are in the condition provided by the factory.
STEP 1
Adequate clearance is required around the unit to provide air ow. Ideally you want at least 48” clearance around
all four sides of the system. Chiller systems located indoors require adequate ventilation to insure ecient opera-
tion. Contact the Factory with any questions about chiller location and placement.
Power must be supplied to chiller electrical panel. Check your local electrical codes, it is likely an
electrical disconnect/safety switch will need to be located near the chiller system. Check name plate or
manual for electrical power supply requirements.
STEP 2
Open Electrical Panel and make sure all electrical connections are tight. ese connections may loosen during
shipment. Loose connections can cause motor failures.
CAUTION Refrigeration ball valves are
shipped from the factory in the closed posi-
tion. Prior to operation adjust valves to the
open position.
WARNING Verify that all external power
sources have been removed before servicing
WARNING Do not turn on main power to
the chiller system until all of the electrical
connections are conrmed to be tight.
Please use the services of a licensed and skilled
refrigeration technician for chillerstart-up.
Contact Pro Technical Services with any
questions or concerns at
800-845-7781

10 | Pro Refrigeration, Inc
STEP 3
Remove Front and Side Service Panels as applicable. Open both of the glycol Valves by turning the handles counter
clockwise.
STEP 4
If a tank is installed on your Pro Chiller System ll it with water (no glycol at this time). Otherwise locate the
remote tank or water source and prepare the system to ush the piping with water.
Visually check for any leaks on the system before proceeding.
STEP 5
Turn each circuit’s STAGE switch to the ON position. If your chiller is a single circuit system turn the CHILL-
ER switch to the ON position
Your pump will energize and begin circulating water throughout the piping loop. Open all of the solenoids or
heat exchangers on the loop to get a complete system ush. Visually inspect all of your piping for leaks and repair
prior to proceeding.
Single Circuit Chiller System Dual Circuit Chiller System

Packaged Glycol Chiller Systems | 11
STEP 6
Conrm your pump rotation and that you have ad adequate ow. Motor Rotation is clockwise when viewed from
Motor end. If rotation is backwards, you will need to switch any two leads (3 phase systems only) on the incom-
ing power supply. Indication of ow does not insure proper pump rotation! In reverse rotation the glycol pump
ow is signicantly reduced and will eect chiller operation.
To conrm ow ,check the Flow Meter. If no ow is indicated, it is likely there is an air lock in the pump and
you will need to bleed the air from system. Conrm both valves are open and try cycling the power to the pump
OFF and ON . If still no ow, turn power o and carefully open the plug located on the stainless steel head of the
pump, bleed air from pump head and re-tighten pump head plug.
STEP 7
After 15-30 minutes of ushing, turn STAGE / CHILLER switches OFF and drain the water from system and
tank. If no tank is installed open up your piping inside the processing plant and drain water. It is important to
drain as much water as possible from tank jackets and heat exchangers. Any remaining water will dilute glycol
concentration and could also leave contaminants within piping loop.
If a tank is installed use a Wet/Dry vacuum to clean out any particles inside the tank. It is important to get as
much debris as possible. Any debris left in the system can cause solenoid valves to hang open or not fully open.
STEP 8
Close the piping system and we are now ready to charge the system with a minimum of 35% USP Grade Propyl-
ene Glycol / 65% Water. Use a refractometer or glycol percentage tester to insure the proper glycol concentration.
With the system completely drained, charge the system with one part glycol for every 2 parts of clean water. As
you introduce the glycol to the piping system, additional glycol/water will need to be added. Operating level of
the glycol solution must be within 4-6” from top of tank.

12 | Pro Refrigeration, Inc
STEP 9
Open all Refrigerant Valves on the chiller refrigeration systems. Quantity of valves and location vary based on
compressor/condensing unit make. Check name plate and documentation to conrm the make of your chiller’s
compressor/condensing unit.
To OPEN, remove Valve Stem Covers and adjust valve stem all the way out by turning counter clockwise. It is
advised to have a refrigeration technician open these valves, it may require the use of a special valve wrench to
open.
STEP 10
Compressor/Condensing unit fuses are shipped inside the main electrical enclosure in a plastic bag. Install these
into the fuse block associated with your condensing unit. If chiller has circuit breakers switch them to the ON
position.
Danfoss Condensing Units:
* Receiver Valve
(located on small receiver tank),
* Suction Service Valve
(located on compressor)
* Discharge Service Valve
(located on compressor).
Emerson Condensing Units:
* Receiver Valve
(located on small receiver tank),
* Suction Service Valve
(located near accumulator)
WARNING Verify that all external power sources have been removed before servicing
System with fuse blocks System with circuit breakers
Receiver Valve
SuctionValve
Discharge Valve
Suction Valve
ReceiverValve
Provided Fuses
Fuse Block
Fuse Block Circuit Breaker
Circuit Breaker

Packaged Glycol Chiller Systems | 13
STEP 11
Close electrical panel door and turn electrical disconnect to to the ON position. Turn CHILLER or STAGE
switches to ON. e chiller circulation pump should start running and compressors should stage on/o according
to the glycol setpoint temperature.
Please call Pro Refrigeration Inc’s Technical Support with any questions at 800-845-7781

14 | Pro Refrigeration, Inc
SYSTEM WARRANTY
1. All orders must be in writing and are subject to acceptance by PRO REFRIGERATION INC. at its principle
oce in Auburn, Washington, United States of America.
2. Prices are subject to change without prior notice and PRO REFRIGERATION INC. reserves the right to
invoice the products sold at prices in eect at the time or times of shipment. Prices do not include any LOCAL,
STATE, FEDERAL, OR FOREIGN TAXES OR EXCISES.
3. Risk or loss shall in every case pass to purchaser upon delivery of goods to the possession of the freight car-
rier or customer. PRO REFRIGERATION INC. shall have no responsibility for any claimed shortages unless
1) PRO is notied within ten (10) days after receipt of goods, 2) Agent or carrier has with-in such time has been
notied of such shortages by purchaser, or 3) Purchaser has led claim with carrier for the damage or shortage
claimed.
4. Any delivery dates that may be indicated herein are estimates only and are not guaranteed, Pro Refrigeration
shall not be held liable for any delay in performance or for non-performance caused by circumstances or events
beyond its reasonable control, including but not limited to: Fire, Labor Disputes or Shortages, Accidents, Factory
Conditions, War, Government Action, or Inability to Obtain Material, Fuel, Equipment, Supplies, or Transporta-
tion.
5. PRO REFRIGERATION INC. reserves the right to change Specications, Design, & Material in the interest
of product improvement, without incurring obligation to purchaser.
6. PRO REFRIGERATION, INC. EXPRESSLY DISCLAIMS ALL WARRANTIES, EITHER EXPRESS
OR IMPLIED, AND SPECIFICALLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY
AND OF FITNESS FOR A PARTICULAR PURPOSE, OF THE MATERIALS OR EQUIPMENT
DELIVERED TO PURCHASER EXCEPT AS EXPRESSLY PROVIDED HEREIN. Purchaser assumes
all risk and liability of the use of any materials or equipment purchased from Pro Refrigeration, Inc. Any materi-
als or equipment not manufactured by Pro Refrigeration, Inc. are only warranted in so much as warranted by the
manufacturer or distributor of such goods and in no event shall any warranty period be greater than two (2) years
from the date of shipment to Purchaser. Under no circumstances shall Pro Refrigeration, Inc. provide any warranty
of any kind beyond two (2) years of the date of shipment to Purchaser. In the event of the discovery (and writ-
ten notice to Pro Refrigeration, Inc.) within two (2) years from the date of shipment to Purchaser of any defect in
goods manufactured by Pro Refrigeration, Inc., Pro Refrigeration, Inc.’s liability, whether in contract, in tort, under
any warranty, in negligence, or otherwise, is limited to repair or replacement of the defective goods, at the option
of Pro Refrigeration, Inc. In all instances, labor for repairs is warranted for a period of no greater than one (1) year
from the date of shipment to Purchaser. Otherwise, all such goods from Pro Refrigeration, Inc. are sold on an “AS
IS” basis. UNDER NO CIRCUMSTANCES DOES PRO REFRIGERATION, INC. ASSUME OR AGREE
TO LIABILITY FOR ANY SPECIAL, INDIRECT, INCIDENTAL, CONSEQUENTIAL OR OTHER
DAMAGES arising out of or related to any defective goods hereunder.
7. No products sold by Pro Refrigeration Inc. shall be returned without Pro Refrigeration’s written permission.
Products returned shall be subject to a handling and transportation charge.
WARRANTY REPAIR PROCEDURE
Unfortunately, there will be situations where a component will fail or a chiller will fail due to a problem that was
not detected at the factory. We will assist in any way we can when a situation does occur. We pride ourselves on
building a high quality system that will give the customer years of service, if a problem occurs it is a top priority
that the problem is repaired. e information listed below is based on our standard system warranty. If the chiller
system fails within the warranty period, due to defective components or awed factory workmanship, please follow

Packaged Glycol Chiller Systems | 15
the steps outlined below.
FAULTY COMPONENT
In the event of a component failure, please call our Support Department at [phone]. If it is determined
that the equipment is within the warranty period they will issue an RMA number. When the defective compo-
nent is received a replacement will then be shipped. All freight costs must be pre-paid. Component warranties
are void if the component or chiller system is being used outside of the design parameters.
WORKMANSHIP FLAW
Our chillers are warranted against aws in workmanship for a period of one year from the date of factory ship-
ment. All of our chillers must pass a stringent quality check list before being approved for shipment. If a system
is found to possess a workmanship aw please call the factory and inform us of the defect which was detected.
We will request a written quotation by a certied refrigeration mechanic to perform the repair. All supplies that
are used for the repair will be supplied by us or they must be listed in a written quotation. We will then decide
either to accept the quotation or have the repair performed by a refrigeration contractor of our choice.
If a repair is needed immediately, please call us at [phone] and we will do our best to take care of the problem
promptly.
PLEASE SHIP ALL PRE-APPROVED RETURNS TO:
PRO REFRIGERATION INC.
ATTN: WARRANTY DEPARTMENT
326 8TH ST SW
AUBURN, WA 98001
PHONE [phone] FAX [phone]

16 | Pro Refrigeration, Inc
CHILLER SYSTEM START-UP SHEET
CHILLER MODEL #:
CHILLER SERIAL #:
CUSTOMER :
START-UP DATE :
PRE START-UP CHECK LIST
All Electrical Connections are tight, these may loosen during shipment
Main Disconnect Energized for 24Hr. to allow Crankcase Heater to boil any liquid refrigerant out of crankcase.
Field Process Piping has been leak checked
VOLTAGE on Chiller System matches customer supplied VOLTAGE
Glycol / Water Solution freeze point is at least 20 F. (11 C.) below T-Stat Setpoint
Glycol Pump Motors Rotation is CLOCKWISE when viewed from motor end
Glycol Storage Tank is at least 80% Full
Pressure Bypass Valve tested. To test, Close a valve on the Glycol Supply and visually check for return flow into storage tank.
Chiller location allows adequate air flow to and from Air Cooled Condenser. (Air Cooled Only)
Adequate water supply provided to Water Cooled Condenser (Water Cooled Only)
X DESCRIPTION DATA #1 DATA #2 DATA #3 DATA #4
Percentage of Propylene Glycol to Water in System
Glycol / Water Solution freeze point (Refractor Reading)*
Incoming Line Voltage Reading (L1-L2, L2-L3, L1-L3)
Control Transformer Secondary Voltage Reading
Circulation Pump Motor Amp Readings
Process Pump Motor Amp Readings
PRESSURE CONTROL SETTINGS (refer to Operation Manual for Factory Settings)
High Pressure Cut-Out
Low Pressure Cut-In
Low Pressure Cut-Out
Oil Failure Control
P29NC-3 FREEZE PROTECTION SETTINGS (refer to Operation Manual for Factory Settings)
Low Pressure Cut-Out
TEMPERATURE CONTROL SETTINGS (refer to Operation Manual for Factory Settings)
Setpoint Temperature
Differential Setting
OPERATING DATA**
Glycol Solution Temperature (Thermostat Display Temp.)
Suction Pressure (PSI)
Suction Line Temperature at Compressor
Discharge Line Pressure (PSI)
Discharge Line Temperature
Liquid Line Pressure (PSI)
Liquid Line Temperature
Glycol Temperature at Evaporator Inlet
Glycol Temperature at Evaporator Outlet
Ambient Air Temperature
Condenser Water Temperature Inlet & Outlet (If applicable)
Compressor Amp Draw
Complete Chiller System Amp Draw
* A Refractometer should be used to obtain the actual Glycol Solution Freeze Point. To order a Refractometer please
call Technical Assistance at [phone], these are also available from most propylene glycol suppliers.
** Operating Data should be recorded in the order listed. To determine proper operation of the chiller system, please
record all Data simultaneously, or record all data completely with-in as short of period as possible. Data should
be recorded at different Glycol Operating Temperatures (example: record at 45 F. / 35 F. / 25 F.)
FOR TECHNICAL ASSISTANCE CALL [phone] , Monday thru Friday 6:00 AM TO 5:00 PM PACIFIC STAND. TIME
TECHNICIAN: COMPANY:
SIGNATURE: TEL. #:
7-2

Packaged Glycol Chiller Systems | 17
OPERATING AND SAFETY CONTROL SET POINT GUIDE
Below you will nd all our standard electrical controls listed with
the recommended settings at dierent operating conditions.
ese settings are based on systems using Refrigerant R404A
Please check the set point before starting the system.
Unauthorized adjustment of freeze protection will void the warranty. Please consult the
factory ( 253-735-9466 ) prior to adjusting the setpoint.
On remote or air remote condensing unit systems, operating controls may have to be defeated to allow for system
charging of refrigerant. Be sure to set reset any defeated controls before completing start-up procedures.
To order a refractometer (glycol solution tester) please contact your sales
representative or contact the factory at the above listed phone number
DESIRED
GLYCOL
GLYCOL
FREEZE
CONTROL
CUT IN
CUT OUT
TEMP
POINT
GLYCOL %
High Pressure Control
400 psi
25 °F
0 to -10°F
36-42%
Low Pressure Control
30 psi
10 psi
25 °F
0 to -10°F
36-42%
Freeze Control ( PENN P29NC-3)
30 psi
25 °F
0 to -10°F
36-42%
High Pressure Control
400 psi
30 °F
0 to 5°F
33-36%
Low Pressure Control
30 psi
10 psi
30 °F
0 to 5°F
33-36%
Freeze Control ( PENN P29NC-3)
35 psi
30 °F
0 to 5°F
33-36%
High Pressure Safety
400 psi
35 °F
0 to 5°F
33-36%
Low Pressure Control
30 psi
10 psi
35 °F
0 to 5°F
33-36%
Freeze Control ( PENN P29NC-3)
35 psi
35 °F
0 to 5°F
33-36%
High Pressure Safety
400 psi
40 °F
0 to 10°F
30-36%
Low Pressure Control
30 psi
10 psi
40 °F
0 to 10°F
30-36%
Freeze Control ( PENN P29NC-3)
40 psi
40 °F
0 to 10°F
30-36%

18 | Pro Refrigeration, Inc
CHART #1
Weight % Volume % Freezing Freezing Degree
Propylene Propylene Point* in Point* in Brix**
Glycol Glycol Fahrenheit Celsius
0 0 32 0.0 0
5 4.8 29.1 -1.6 4.8
10 9.6 26.1 -3.3 8.4
15 14.5 22.9 -5.1 12.9
20 19.4 19.2 -7.1 15.4
21 20.4 18.3 -7.6 16
22 21.4 17.6 -8.0 16.7
23 22.4 16.6 -8.6 17.4
24 23.4 15.6 -9.1 18.4
25 24.4 14.7 -9.6 19
26 25.4 13.7 -10.2 19.6
27 26.4 12.6 -10.8 20.2
28 27.4 11.5 -11.4 20.8
29 28.4 10.4 -12.0 21.4
30 29.4 9.2 -12.7 22
31 30.4 7.9 -13.4 22.7
32 31.4 6.6 -14.1 23.6
33 32.4 5.3 -14.8 24.4
34 33.4 3.9 -15.6 25.3
35 34.4 2.4 -16.5 26.1
36 35.4 0.8 -17.3 26.9
37 36.4 -0.8 -18.2 27.5
38 37.4 -2.4 -19.1 28
39 38.4 -4.2 -20.1 28.5
40 39.4 -6 -21.1 29.1
41 40.4 -7.8 -22.1 29.6
42 41.4 -9.8 -23.2 30.2
43 42.4 -11.8 -24.4 30.7
44 43.4 -13.9 -25.5 31.3
45 44.4 -16.1 -26.7 31.8
46 45.4 -18.3 -28.0 32.4
47 46.4 -20.7 -29.3 33
48 47.4 -23.1 -30.6 33.5
49 48.4 -25.7 -32.1 34.1
50 49.4 -28.3 -33.5 34.7
51 50.4 -31 -35.0 35.5
shaded area represents recommended Glycol Water Percentage
*Glycol freeze point should be 20 to 25 F. below operating temperature or below coldest
winter ambient conditions. Whichever is coldest.
** Degree Brix is a measure of sugar concentration in a fluid and is important in fermentation
applications. Although there are no sugars in glycol, it will affect the refractive index of
the fluid in a similar fashion.