Cold Shot Chillers ACWC-024-E-DR-LT-0-2 Manual

Marrone & Co., Inc.
0D[LPLOLDQ'ULYH Houston, Texas 77032 • Phone [phone]
Fax [phone] • www.waterchillers.com
INSTALLATION, OPERATION, AND
MAINTENANCE INSTRUCTIONS
(ACWC-024-E-RF and ACWC-240-E outdoor models shown)
AIR-COOLED, WATER CHILLERS
UP TO 240 kBTU/HR CAPACITY
Model#: ACWC-024-E-DR-LT-0-2
Serial#: MXXXXXX-X

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MODEL NUMBER NOMENCLATURE
Example Model#:
ACWC
-
60
-
E
-
ST
-
LT
-
40
-
5
Position:
1
2
3
4
5
6
7
Position-Description
1. Model Type: ACWC: Air Cooled Water Chiller
2. Nominal Capacity in kBtu/hr
3. Series System
4. Flow Design: (_=Portable, ST=Stationary, RF=ReverseFlow, EXCH=HeatExchanger, DP=DualPump,
DR=DualReturn)
5. Leaving Fluid Temperature (_=Standard, LT=LowTemperature-specify lowest temperature in °F)
6. Ambient Temperature Conditions:
IND: Indoor use only. Casters on frame.
40: Suitable for outdoor use with an ambient of 40°F ambient. Casters, optional.
0: Suitable for outdoor use to 0°F ambient. Includes low ambient fan controls. Casters, optional.
M20: Suitable for outdoor use to -20°F ambient. Hot Gas Bypass and Wind Baffles may be included. Casters,
optional.
7. Electrical Power (See specification sheet)
(Variations of the above nomenclature exist and may not include every description).
TABLE OF CONTENTS
I. IMPORTANT .................................................................................................................................................................................................................... 3
A. CODES AND REGULATIONS ...........................................................................................................................................................................................3
B. INSPECTION ..................................................................................................................................................................................................................3
C. SAFETY CONSIDERATIONS.............................................................................................................................................................................................3
D. REPLACEMENT PARTS...................................................................................................................................................................................................3
II. INSTALLATION................................................................................................................................................................................................................ 4
A. MOVEMENT/RIGGING ..................................................................................................................................................................................................4
B. PLACEMENT ..................................................................................................................................................................................................................4
C. MOUNTING...................................................................................................................................................................................................................4
D. SPLIT SYSTEMS (Remote Condenser or Condensing Unit) ............................................................................................................................................5
E. ELECTRICAL POWER AND CONNECTIONS......................................................................................................................................................................5
F. FREEZE PROTECTION .....................................................................................................................................................................................................6
G. GLYCOL .........................................................................................................................................................................................................................6
H. PERFORMANCE.............................................................................................................................................................................................................7
III. PRE-STARTUP................................................................................................................................................................................................................ 8
IV. STARTUP ....................................................................................................................................................................................................................... 9
V. SYSTEM COMPONENTS: (See your chiller’s specification for details.) ......................................................................................................................... 10
VI. MAINTENANCE (BASIC GUIDE).................................................................................................................................................................................... 13
VII. TROUBLESHOOTING (BASIC GUIDE)........................................................................................................................................................................... 15

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I. IMPORTANT
A. CODES AND REGULATIONS
The United States Environmental Protection Agency (EPA) has issued various regulations
regarding the introduction and disposal of refrigerants in this unit. Failure to follow these regulations
may harm the environment and can lead to the imposition of substantial fines. Because these
regulations may vary due to the passage of new laws we suggest that, any work on this unit be done
by a certified technician. Should you have any questions, please contact the local office of the EPA.
This product is designed and manufactured to permit installation in accordance with National
Codes. It is the installer’s responsibility to install the product in accordance with National Codes
and/or prevailing local codes and regulations. The manufacturer assumes no responsibility for
equipment installed in violation of any codes or regulations.
IMPORTANT MESSAGE TO OWNER:
These instructions should be carefully read and kept near the product, for future reference. While
these instructions are addressed primarily to the installer, useful maintenance information is
included. To insure proper set up, operation, and performance it is recommended that a licensed
service professional start this piece of equipment. Have your installer acquaint you with the
operating characteristics of the product and periodic maintenance requirements.
B. INSPECTION
This product has been inspected at the factory and released to the transportation agency without
known damage. Inspect carton’s exterior for evidence of rough handling in shipment. Carefully
remove protective wrap and all banding to uncrate, for inspection; if damage is found, report
immediately to the transportation agency and Cold Shot Chillers. Provide a report and photographs
(highly recommended), if possible.
Once it is established that the unit has positive pressure, proceed to installation. Test the system
service valves with refrigeration gauges to ensure refrigerant pressure is present and no
undetectable damage (i.e. dropping the unit) has occurred.
C. SAFETY CONSIDERATIONS
Installation, start-up, and servicing of this equipment can be hazardous due to system pressures,
electrical components, and equipment location (roofs, elevated structures, etc.) Only trained,
qualified installers and service mechanics should install, start up, and service this equipment. When
working on the equipment, observe precautions in the literature, tags, stickers, and labels attached
to the equipment, and any other safety precautions that apply.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling, rigging, and setting bulky equipment.
• Use care in handling electronic components.
D. REPLACEMENT PARTS
• For information on replacement parts, contact Cold Shot Chillers.
• When ordering parts, provide complete model and serial number as shown on the unit nameplate.
• Most parts will be available through local distributors.

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II. INSTALLATION
A. MOVEMENT/RIGGING
1. The preferred method for movement of the chiller while on the pallet is with forklift or pallet jack.
2. For rigging, overhead rigging with spreader bars above the unit is preferred.Protect unit from being crushed.
CAUTION! All panels must be in place when rigging. Failure to follow these requirements could result in personal
injury or equipment damage.
3. Maneuvering of the system must be done with care to prevent damage to the panels or the internal components
mounting.
4. See specification sheets for physical data and unit dimensions.
B. PLACEMENT
1. Select a location for air-cooled units with adequate air circulation that is as dust free as possible.
2. There must be a minimum of 3 ft of space for service and for unrestricted airflow on all sides of unit, and a
minimum of 8 ft clear air space above unit. Select a location where air is not recirculated back into condenser.
For multiple units, allow additional separation between units for airflow and service.
3. Verify ambient conditions that the system is suitable.
a) IND - Indoor units are suitable for indoor use only. No wet environments.
b) 40 - Outdoor units to 40°F (same as above) and are suitable for outdoors to 40°F ambient temperature
and suitable for wet environments.
c) 0 - Outdoor units to 0°F (same as above) and suitable for outdoors to 0°F ambient temperature.
d) M20 - Outdoor units to -20°F (same as above) and suitable for outdoors to -20°F ambient temperature.
4. Avoid environments which may be corrosive to the chiller.
5. Avoid locations that may have direct spray such as from roof edges or sprinklers.
6. Select location as near to the process as possible to reduce the system piping / pressure drop.
C. MOUNTING
1. Level the unit to ensure proper oil return to compressors and fluid draining.
2. When unit is in proper location, secure unit to foundation or on vibration isolators, as needed/required by local
requirements. Fasteners for mounting unit are field supplied.
3. PIPING
a) Connect piping or hoses to unit, making sure that the inside diameter (I.D.) of the pipe or hose is the
same as or greater than unit connections and that the material is designed for the expected fluid
conditions.
b) The fluid circuits must contain a bypass to prevent a “dead head” condition for the pump and to allow
return process water to chiller tank. A bypass valve is required in the system to ensure proper flow
through the evaporator and to provide adjustment of the pressure and flow to the process.
(1) Refer to the system Flow Diagram for details, or to the actual unit.
c) Typical Chiller Fluid Flow Designs:
(1) Stationary: Chilling system with evaporator.
(2) Reverse Flow: Chilling system with evaporator and circulating pump.
(3) Portable: Chilling system with evaporator, circulating pump, and reservoir tank.
(4) Extra Heat Exchanger: Same as Portable along with an extra chilled fluid heat exchanger.
(5) Dual Pump: Same as Portable and includes a second pump typically for process use.
(6) Dual Return: Same as Portable yet includes a second return direct to tank for some flow.
d) System Recommendations:
(1) Valves installed throughout the system, as needed. Typical at each load for isolation and
flow/pressure balancing purposes through system.
(2) Use low pressure drop design components. (Such as long radius 90s or 45s elbows)
(3) Add piping and valve to the tank drain port.
(4) Temperature and pressure gauges throughout system at ideal locations for monitoring.
(5) Vent and drain valves to provide ability to bleed air and drain fluids from system, as needed.

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(6) Heat-trace cable. Protect any fluid system exposed to freezing ambient conditions.
e) Systems with the process piping located above the chiller, should be aware of possible fluid returning to
the chiller when the system is turned off. Typically, the chiller inlet/outlet piping is below the tank
water level which will limit draining fluid to tank, however if the process piping is opened, the fluid may
return to the tank and overflow. Recommend isolation valves
D. SPLIT SYSTEMS (Remote Condenser or Condensing Unit)
1. Conform to all local codes and standard practices for systems with refrigerant.
2. Systems with split refrigerant systems are typically shipped without refrigerant, however, are it is charged with
nitrogen to maintain a positive pressure (typically 10-15 psi).
3. Verify and remove the nitrogen charge. Each marked section should have a positive charge (see tag/decal noted
at connection point).
a) If no pressure is present, reapply pressure and check for leaks before charging with refrigerant.
4. Pipe the refrigerant lines of the two units together as required.
5. Pressure test the system, pull vacuum, and degas.Use proper industry practices with system.
a) Split systems need to be evacuated prior to charging with refrigerant.
6. Add refrigerant to the liquid line service port. See the equipment label plate for the type of refrigerant and
typical amount of initial charge or check the specification sheet. Adjust as needed to set the appropriate charge
as noted in Startup section.
E. ELECTRICAL POWER AND CONNECTIONS1
1. POWER SUPPLY: Field wiring must comply with national and local codes.
a) Install a branch circuit fused disconnect of adequate size to handle starting current. The disconnect must
be within sight from the unit and readily accessible, in compliance with National Electrical Code (NEC),
Section 440-14.
b) Verify electrical power on the Cold Shot Chillers label plate with actual voltage.
c) Connect line power supply to terminal block or as noted in machine; typically, connect power leads to
terminals L1, L2 and L3 on compressor contactor.
d) Ensure Ground wire is connected appropriately.
e) 208/230V/3Ø systems with high or “stinger” leg, connect this leg to L2 or middle terminal. Failure to do
so will cause early control component malfunction.
(1) If 208V, verify that the control circuit voltage out of the transformer is the proper amount. If not,
check the transformer for additional tap wires for changing to 208V, when available.
2. ACCESSORIES/EXTRA EQUIPMENT
a) Field-installed accessories refer to the accessory literature for installation instructions.
b) Wiring connections for field-supplied equipment are shown on wiring diagrams.
3. Verify that the chiller selector switch is in “Off” position before applying power.
4. ROTATION (3-PHASE) If using a phase sequence tester, electrical phase direction is clockwise.
1 Electrical Notes:
• Factory wiring is in compliance with NEC. Any field modifications or additions must be in compliance with all applicable codes. Use copper,
copper-clad aluminum for field power supply only.
• Field power supply wiring must be 75 C minimum.
• If any of the original wiring furnished must be replaced, it must be replaced with 90 C wire or its equivalent.
• Compressor thermally protected. Three-phase motors are protected against primary single-phasing condition.
• 60 Hz units have 120 volt control circuit. 50 Hz units have 230 volt control circuit. A separate source of supply at the correct voltage
• Must be field supplied through a fused disconnect device with a maximum rating of 15 A to TB2 connections L1 (Hot Side) and L2 (Neutral).
• Open control circuit disconnect switch for servicing only. Disconnect must remain closed for crankcase heater to operate.
• Transformers must be fused and grounded per applicable codes.

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5. IMPORTANT: Allowing the unit to operate with a voltage imbalance in excess of 2% may void the warranty.
% Voltage Imbalance = 100 x (max voltage deviation from avg voltage) / (average voltage)
Example: Expected supply voltage to unit is 240-3-60.
Determine maximum deviation from average voltage:
MAXIMUM DEVIATION:
AB = 243A– 239B= 4 volts*
AC = 239A– 238C= 1 volt
BC = 239B– 236C= 3 volts
*MAX DEVIATION = 4 volts
AVERAGE VOLTAGE:
AB = 243 volts
BC = 236 volts
AC = 238 volts
AVERAGE = 717/3 = 239 volts
• Determine % voltage imbalance:
%Voltage Imbalance = 100 x 4/ 239 = 1.7%
• This amount of phase imbalance is Satisfactory as it is below the maximum allowable 2%.
6. UNBALANCED 3-PHASE SUPPLY VOLTAGE:
a) Never operate a system where a phase imbalance in supply voltage is greater than 2%. Excess operation
with voltage outside of tolerance (for example “Brown Outs” will result in motor damage. (This is
considered abuse and is not covered under Warranty).
b) If Voltage Imbalance Greater than 2%:
(1) If the supply voltage phase imbalance is more than 2%, contact your local electric utility company
immediately.
(2) Check the voltage at the individual components such as each compressor and pump when
operating.
(3) A voltage imbalance may be an indication of loose wires/cable connections or faulty contactors.
(4) Another issue may be the components themselves. Troubleshoot if needed.
7. Verify that the crankcase heaters are warming properly by using a thermometer or by carefully placing back of
hand near the base of the compressor by the heater.
F. FREEZE PROTECTION
1. Protection of system components from freezing is of the utmost concern. Freezing can occur from the external
ambient or internal system temperatures.
2. INTERNAL: The evaporator (or other heat exchanger) is the primary component that is susceptible to freezing
even during normal operation. The refrigerant side commonly operates at 8 to 12 degrees below the
temperature of the chilled fluid temperature. The fluid entering the evaporator must be capable of passing
through without forming ice. Ice formation can quickly restrict the flow causing further freezing and eventually
expansion of internals resulting in rupture. Attention must be made towards any process involving the
evaporator. The chilled fluid characteristics need to have a freeze point that is well below any temperature that
the chiller is capable of cooling. (See Glycol)
3. The chiller is equipped with various safety devices designed and set to assist with protecting the system from
hazards.
G. GLYCOL
1. Glycol and water mixtures are common methods to change a fluid’s freezing point but may reduce the cooling
performance of the chiller. Use of any glycol or other additives to the fluid should be carefully considered.
Follow the glycol manufacturer or supplier’s directions for system preparation, mixtures, disposal, and
maintenance of concentrations.
IMPORTANT!!
DO NOT BYPASS OR ADJUST ANY SAFETY DEVICES OR PARAMETERS WITHOUT
FIRST CONTACTING COLD SHOT CHILLERS.
ANY MODIFICATIONS OF THE CHILLER SYSTEM FROM THE MANUFACTURER’S DESIGN WILL REQUIRE PRIOR
WRITTEN APPROVAL FROM COLD SHOT CHILLER’S, OTHERWISE ALL WARRANTIES WILL BECOME VOID.

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2. Automatic/Manual refill or change over systems should be cautious and attentive to the specific concentration of
mixtures dilution over time. Measure the system’s concentration regularly.
3. Glycol concentrations affect cooling performance. As the temperature reduces, the fluid becomes thicker which
may reduce heat transfer capabilities and reduces the circulating pump performance.
H. PERFORMANCE
1. The basic function of a chiller is to “chill” fluid by removing heat from one location and transferring it to another
by using the special properties of refrigerants. The performance or COOLING capacity of a chiller is based on a
standard set of operating conditions. Changing the conditions, results in different capacity rating of the chiller.
2. Some conditions are:
a) Ambient conditions (for air-cooled systems)
b) Condenser fluid (for water-cooled systems)
c) Type of fluid being chilled
d) Design and setup of the chiller
e) Leaving fluid temperature (Supply fluid to process from chiller)
f) The other side of the equation is the Heat load. Some of the main conditions affecting load are:
g) Entering fluid temperature (Return fluid to chiller from process)
h) Flow rate of fluid
IMPORTANT!!
DAMAGE CAUSED BY FLUIDS WITH INADEQUATE FREEZE POINT PROTECTION IS NOT CONSIDERED FAILURE
DUE TO PRODUCT OR WORKMANSHIP AND IS NOT COVERED BY WARRANTY.

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III. PRE-STARTUP
1. STARTUP CHECKLIST - Review and use. (Typically located at end of this manual.)
2. COMPRESSOR MOUNTS
a) As shipped, the compressor(s) is held down by mounting bolts with vibration rubber grommets.
b) Verify bolts are tight to base and that the compressor is able to move on the rubber grommets.
(1) Single Compressor units: Verify that the shipping spacers (if installed) are removed from between
the compressor bottom (or compressor plate) and the base of the unit.
(2) Tandem Compressor units: Compressors are mounted on a common plate.
(a) Do not loosen the compressor bolts connecting it to the plate.
(b) Verify that the shipping spacers (if installed) are removed from between the compressor (or
compressor plate) and the base of the unit. (Typically quantity of 6).
3. SERVICE VALVES
a) Verify all service valves are open. (Typical valves on these models do
not have backseats.)
4. FLUID IN SYSTEM:
a) Fill the system with the desired solution.
b) A 30% glycol mixture is recommended for all standard flow units. For
“Low Temperature” chilled fluid and units installed outdoors may
require a higher concentration to prevent freezing. See unit nameplate for specific concentration
requirements or adjust based on the ambient conditions of the chiller, fluid temperature, and/or
system design.
c) For systems with a tank, fill to within a few inches from the top edge or just to the top of the sight glass.
d) Fill system and bleed air from the highest point of piping. Vent air from pump and piping is possible by
loosening or removing the strainer blowdown plug, which will vent air as the tank is filled, as long as the
bypass valve is still open. Replace plug/cap after tank is full. Ensure that the pump and evaporator are
filled with fluid prior to starting.
e) Systems with an open tank are typically capable of bleeding excess air that is returned to the tank when
the system is operating.Piping in and out are typically below the water line.
f) For stationary systems (without an integral pump and tank), ensure that there is method for ensuring flow
through the chiller system, such as with the use of a flow switch. See electrical system or specifications
for details.
g) ROTATION: Check for rotation prior to start-up. Do not use pump for checking rotation unless fluid is in
the tank and the pump is full of fluid. Verify 3-Phase Power Electrical Rotation:
h) All 3-phase (3Ø) motors are wired in phase. If motors are not turning in correct direction, then reverse 2
of the incoming power wires to chiller.
i) For systems with 3Ø pumps: Pump rotation is normally clockwise as view from the back of the motor
(Refer to direction decals if available). Pumps will still pump fluid if rotating reversed, so actual
verification is necessary.
(1) Quickly depress the pump contactor to verify proper rotation.
j) For systems without 3Ø pumps: Attach refrigerant gauges to the test ports and verify that the discharge
pressure rises and the suction pressure decreases. Loud noise may be indication of wrong rotation.
Extended run time in reverse rotation will damage the compressor and lead to premature failure which
is considered abuse and not covered by warranty.
5. CRANKCASE HEATERS:
a) If compressor has crankcase heaters, allow the power to be applied to the heaters for at least 24 hours
before starting the compressor.
DO NOT ATTEMPT TO START CHILLER WITHOUT FLUID IN THE SYSTEM!!
This will damage the mechanical seal in the pump and void the pump warranty. Also, potential freeze
condition may exist in the evaporator.
DO NOT RESET ANY SAFETY CONTROLS UNTIL
THE CAUSE HAS BEEN DETERMINED.

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IV. STARTUP
1. Verify installation is complete and all Pre-Startup steps are completed.
2. STARTUP CHECKLIST - Review and use. (Typically, located at end of this manual)
3. Attach refrigerant gauges to the appropriate service ports.
4. PUMP ONLY: Turn switch to Pump Only (or use local system pump) and operate for at
least 15 minutes. Shut unit down and clean strainer to remove any debris that may
have been in the system. Depending on the system cleanliness, this step may be
conducted several times to help ensure all debris is removed from the system.
5. Once all the air is purged from the circuit and the system is free from debris, verify
that the chilled fluid has the proper flow of 3 GPM per ton of capacity.
a) Typical systems with a manual bypass valve which are factory set. The valve
must be open enough to ensure proper flow to the evaporator or the system
will shut down on low flow safety condition.
b) Process systems with automatic and variable control flows will need to ensure
that the bypass valve is throttled to accommodate all stopped process flow.
6. TEMPERATURE CONTROLLER (See Temperature Controller Section for details):
a) Set the controller to the desired Set point Value (lower LED readout): Push
and hold the up or down scroll button for two seconds until the value starts
changing. Adjust the value to the desired temperature then stop pressing
any buttons. After two seconds, the new value will become operative. (Do
not adjust the set point below the temperature listed on the unit
nameplate).
b) The controller will also display “Present Value” (upper LED readout) which is an indication of the current
temperature of the fluid in the chiller tank, or “Leaving Fluid Temperature” depending on the specific
chiller design.
7. Unit is now ready to turn on for cooling. Move the selector switch to “Cooling Cycle” setting and the unit will
begin cooling.
8. During the cooling cycle, condenser fans may turn on and off, due to changes in refrigerant pressure. This should
be expected during normal operation and occurs due to ambient temperature and the amount of heat being
returned in the water chiller.
9. Monitor the temperature at the process location and adjust the Set Value on the temperature controller to
achieve the desired value.
10. While cooling at low load conditions, bubbles may become visible in the refrigerant sight glass. The charging
procedure requires the unit to be under full load with 75°F or above water temperature with clear sight glass for
optimum performance. Returning fluid temperature should not exceed 100°F on standard units or the chiller will
cycle off on high pressure switch and shut down. Should this occur, allow water to cool down by running pump
only and restarting chiller once water is 100°F or colder.
a) Refrigerant charge may need to be adjusted to achieve the proper operation of the chiller during final
installation as described below.Typically, on split systems.
11. Refrigerant Charge:
a) Charging refrigerant during system operation should only be performed in the suction line and then only
is small bursts.
b) Continue to charge the unit through the suction line service port until the glass is clear with 70°F entering
water temperature.
c) Verify or set the expansion valve (TXV) superheat to approximately 20°F as measured 6 to 12 inches from
the compressor on the suction line.
d) While cooling at low load conditions, bubbles may become visible in the refrigerant sight glass. The
charging procedure requires the unit to be under full load with 70°F or above water temperature with
CAUTION!: Never charge liquid into the low-pressure side of system. Do not overcharge. During
charging or removal of refrigerant, be sure there is fluid flow through the evaporator and the
condenser fan(s) are operating.

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clear sight glass for optimum performance. Returning fluid temperature should not exceed 90°F on
standard units or the chiller will cycle off on high head pressure and not run. Should this occur, allow
water to cool down and restarting chiller once water is below 90°F.
e) If sight glass is bubbly add to charge. If clear, reduce the charge to bubbles and clear. Allow five (5)
minutes run time for equalization.
f) Re-check superheat and adjust as required.
V. SYSTEM COMPONENTS: (See your chiller’s specification for details.)
1. ACCESS PANEL
a. Viewed facing
front panel
(where the
Cold Shot
Chillers logo is
located).
b. Panels on
larger systems (>120kBtu/hr) must have all
panels installed when operating.
2. COMPRESSORS
a. Scroll compressors are hermetically sealed
with internal motor overload protection.
b. Most Copeland compressors are equipped
with an advanced scroll temperature
protection (ASTP). A label located above the
terminal box identifies models that contain
this technology.
c. Advanced scroll temperature protection is a
form of internal discharge temperature
protection that unloads the scroll compressor
when the internal temperature reaches
approximately 300 F. At this temperature, an
internal bi-metal disk valve opens and causes
the scroll elements to separate, which stops
compression. Suction and discharge pressures
balance while the motor continues to run. The
longer the compressor runs unloaded, the
longer it must cool before the bi-metal disk
resets. Eventually, the motor’s internal
thermal electrical protection will shut down
the compressor.
d. To manually reset ASTP, the compressor
should be stopped and allowed to cool. If the
compressor is not stopped, the motor will run
until the motor protector trips, which occurs
up to 90 minutes later. Advanced scroll
temperature protection will reset
automatically before the motor protector
resets, which may take up to 2 hours.
3. CRANKCASE HEATER
a. This minimizes absorption of liquid refrigerant
by oil in casing during brief or extended
shutdown periods.
4. CONTROLLER
a. The digital temperature controller may vary in
design. For controller details, see the
Controller Section of this manual.
5. CONDENSER FANS
a. Fans operate along with the compressor
operation along with the mode controls.
b. Modes of fan cycling are:
a) On (whenever the compressor is on).
(Typically, 3ton and under)
b) Cycling (with use of pressure actuated
“head pressure switch”. (5ton and over)
c) Speed Controlled (if using a low ambient
fan speed controller device when
operating in low ambient condition).
6. FILTER/DRIER
a. For system cleanliness and moisture capture.
Every unit will have a filter drier factory
installed.
7. MOISTURE INDICATOR
a. For system charging and moisture condition.
Every unit will have a sight glass (moisture
indicator) factory installed.
IMPORTANT: Never open any switch or disconnect that de-energizes the crankcase heater unless unit is being
serviced or is to be shut down for a prolonged period. After a prolonged shutdown on a service job, energize
the crankcase heater for 24 hours before starting the compressor.
NOTE: Schrader valve cores: Most components connected to a refrigerant fitting include a Schrader valve for
servicing. If leakage occurs during removal of a component, the valve may have been removed or damaged.

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8. FLOW SAFETY THERMOSTAT (FS):
a. Generally the cause will be low or insufficient
water flow caused by a clogged “Y” strainer or
restricted flow in the process. Resetting this
control and not determining the cause for
tripping can cause the evaporator to freeze
and rupture.
b. Indoor chillers are normally equipped with a
Low Flow Safety temperature sensor that
detects temperature of the refrigerant. This
safety will automatically trip and requires
manual resetting before the cooling cycle will
resume. This safety can also be tripped by low
ambient conditions overnight or during
shipping.
c. Do not reset this control unless the exact
cause for its tripping is determined.
9. FREEZE SAFETY (FZ): (IF EQUIPPED)
a. Indoor chillers are typically equipped with a
Freeze Safety temperature sensor that
detects low temperature of the fluid in the
system. This safety will automatically trip and
is reset automatically when the water
temperature returns to the higher sensor
setting difference.
10. FLOW SWITCH SAFETY (FSS): (IF EQUIPPED)
a. Refer to the LOW FLOW
SAFETY for explanation
and cautions.
b. Outdoor units with Low
Ambient Kits are normally
equipped with a
mechanical flow switch
which monitors the
fluid entering the
evaporator. This switch is automatically reset
when the fluid flow returns to the proper flow
rate. Adjustment should not be performed
unless necessary. If adjustments are made,
ensure that the flow entering the evaporator
is greater than 3 gallons per minute per ton of
refrigeration rating of the chiller. For
example, a 2 Ton chiller will need a minimum
of 6 gpm.
11. REFRIGERANT LOW PRESSURE SAFETY (LPS)
a) Monitors the pressure of the refrigerant
suction line and will automatically open
when the pressure drops below the set
point and will automatically reset when
pressure is above the non-adjustable
reset setting. (See specifications for
details)
12. REFRIGERANT HIGH PRESSURE SAFETY (HPS)
a) Monitors the pressure of the refrigerant
and will automatically open when the
pressure rises above the sensor fixed set
point. (See specifications for details)
b) Reset types are manual or automatic,
depending on design and system.
a) Manual Reset - requires that a
button be pressed.
b) Automatic Reset - automatically reset
when pressure is below the reset
setting.
13. CAPACITY CONTROLS
a. System with multiple compressor permit the
use of capacity control using the temperature
controller system.
b. Hot Gas Bypass (Option) - A bypass valve in
the refrigerant system that permits that
cooling output capacity of the chiller to vary
based on the load of the system.
14. LOW AMBIENT CONDITION CONTROLS (OPTIONS)
a. Low Ambient Conditions to 0°F Kit (Option)
b. Temperature of the chiller’s ambient
condition is monitored and will change the
operation of the chiller fans to reduce the
possibility of freezing condenser fan cycling.
c. NOTE: Low Ambient chillers typically do not
have the Low Flow Safety or a Freeze Safety.
They are equipped with a pressure controlled
fan control system which is used to operate
the fan (or Fan #2 or #3 only on multiple fan
unit chillers).
15. WIND BAFFLES (Depending on design)
a. Panels mounted in or on the condenser coil
section to limit/control the amount of air
entering the coils. (Option)
b. Typically used with Low Ambient kit systems
with controls down to -20°F Kit.
16. LOW CHILLED WATER TEMPERATURE (Low LCWT)
a. Low Temperature refers to the temperature
of the fluid leaving the chiller is lower than
the temperature of the standard temperature
machine’s Leaving Chill Water Temperature
(LCWT). Glycol or some other freeze
protected fluid is required.
b. The temperature controller parameters must
be setup for the lower leaving temperatures
that the system will generate.
Figure 1Low Flow
/ Freeze Safety
Figure 2Flow Switch

MNL_Standard-NoSpecs_ACWC-18to240-E-_(0713).docx - 12 -
c. Also, some temperature thermostats may
need to be adjusted.
17. PUMP (Depending on design)
a. Systems with integral pump are typically
setup to provide recirculating fluid for the
chiller and some flow is routed for the process
system. Refer to the unit’s actual design for
details.
b. A secondary pump may be used for process
specific applications, referred to as Process
Pump.
18. TANK (Depending on design)
a. Systems with integral tank will typically be
304 Stainless Steel with Open Top with
Shoebox Type Lid, Fluid Level Sight glass, Fill
Port, & Drain Plug.
19. HEAT EXCHANGER (Depending on design)
a. A heat exchanger is used to transfer heat
typically from the chiller fluid circuit to a
separate process fluid circuit.
20. SWITCHOVER SYSTEM (CHILLER BYPASS)
(OPTIONS)
a. Manual City Switchover (MCSO) (Option)
a) System valves which can be aligned to a
backup water supply system such as the
city water supply. Outlet fluid flow is
normally routed to the building’s drain
system. Valves are connected and must
be actuated simultaneously or in the
proper series to operate properly.
Converting back is normally performed in
the reverse order.
b. Automatic City Switchover (See ACSO
literature)
a) System has electrically operated valves
similar to MCSO, however it can be setup
to change automatically based on a
system safety situation.
21. TANK LEVEL (OPTIONS)
a. Float Valve
a) Located inside the tank, the float valve is
a mechanically float-actuated valve
supplied with a makeup water source of
fluid for the tank.
b) The makeup water (such as city water
supply) is connected to the pipe
connection on the outside of the tank.
c) Water pressure, typically, must be less
than 30psi.
d) When the level falls below a certain level,
the valve will open and fill the tank.
When it reaches the top setting
adjustment, the valve closes.
e) If the valve does not maintain level:
a) Verify water pressure supply.
b) Verify the float adjustment.
c) Verify the mechanical linkages are
free to move.
d) Verify there is no dirt or debris on
the valve seat.
b. Tank Level Float Switch and Solenoid Valve
a) A float actuated switch mounted in the
tank to monitor when tank is at different
levels depending on design:
a) Low Tank Level- tank is at the low
level point that will begin filling the
tank.
b) High Tank Level- level in tank is at or
near top of tank and may overflow.
c. Tank Level Switches
a) Tank level switches may be mounted in
the tank as needed for various
applications for Safety or Notification
purposes.
a) Safety – to stop the operation of
something such as the chiller or
pump.
b) Notification – to provide a signal for
notification for manual refill or that
another action must be performed.
c) Action – to provide signal for use
with other system uses such as
automatic fill systems.

MNL_Standard-NoSpecs_ACWC-18to240-E-_(0713).docx - 13 -
VI. MAINTENANCE (BASIC GUIDE)
1. REVIEW AND COMPARE SYSTEM OPERATING
PARAMETERS
a. Review original startup checklists and any log
readings that may have been recorded to
compare with existing parameters and
conditions. Determine if further analysis is
needed.
2. AIR COOLED CONDENSER (INSPECT AND CLEAN)
a. INSPECT: Light should be visible through the
condenser coil for dirt or airborne particle
build-up. Check deep into the coils with a
flashlight and, if dirty, clean as needed.
b. CLEANING: Be careful to disconnect the
power first. Protect all electrical components
from water and from water entering electrical
conduit lines, and then cover the
pump/motor, unless motor is a TEFC, to
prevent water from entering the vent ports. If
it needs to be cleaned, remove the covers of
the chiller and use water or compressed air to
blow back through the coil in the opposite
direction of air flow. Avoid any damage to coil
fins such as bending fins flat.
c. EZ CLEAN FILTERS: If included on the
condenser, remove the filters from the unit,
and wash with water or soapy water, rinse
thoroughly, and then allow filters to dry
thoroughly before reinstallation. Reattach
when completely dry.
3. UNIT SURFACE CLEANLINESS (INSPECT AND
CLEAN)
a. Inspect all exposed surfaces for indications of
corrosion.
b. Metal, air, and/or water do not always mix
well. When the proper concentration are in
the same area, then corrosion results.
Corrosion is the changing of a metal’s
properties from one material to another.
Nearly all metals are susceptible to corrosion.
One noticeable corrosion when iron and
oxygen mix resulting in Iron-Oxide or Rust.
Most commonly, the corrosion can be
removed with wire brush and/or abrasive
clothes, and then the surface can be recoated
to reduce future corrosion. For severe
environments, use a durable epoxy paint that
can create an oxygen barrier.
c. Fasteners which are corroded should be
replaced with stainless steel fasteners.
4. WATER QUALITY / TEST GLYCOL MIXTURE
(VERIFY)
a. System water should be clean and free of
contaminants. If the chiller has a reservoir,
check for debris or contaminants which could
reduce the efficiency of your chiller. If the
chiller has a flow-through heat exchanger,
check for normal inlet and outlet fluid
pressure. A large pressure differential could
indicate plugged up heat exchanger passages.
5. STRAINERS, FLUID (INSPECT/CLEAN)
a. Fluid filters should be clear enough to allow
for proper flow and pressure in the system.
An increased fluid pressure on the system
may indicate a dirty filter.
b. To clean, turn the system off, isolate the
process piping, if possible (if the chiller is not
isolated from the process and the strainer is
opened, then any fluid above the strainer will
drain out immediately.) After isolating the
process, use a wrench to hold the strainer
stationary while another wrench is placed on
the strainer screen cap. The wrench on the
strainer body must prevent the body from
turning in the piping. Remove the cap and the
strainer screen. Clean the screen and
reinsert, taking care not to damage by
crushing. Tighten the screen cap.
c. Setup a schedule based on the systems
cleanliness and trends of use.
IMPORTANT
• Always disconnect and lock out the electrical power source before attempting any connection, maintenance or
repairs. Failure to do so can cause electrical shocks, burns and death.
• All work must be performed by a qualified service person based on the local codes and regulations of the area.
• This guide/instruction is to be used as a guide only. An understanding of the system being worked on must be
understood before performing any service. Each equipment installation is unique and must be reviewed
carefully.
• This is a list of basic maintenance items for your liquid chiller. The interval for this maintenance should be
determined by the duty cycle of the chiller and the environmental conditions in which it operates. Each system
may be unique, so contact the systems manager or the manufacturer for assistance.
If any questions regarding the equipment, please contact Cold Shot Chillers for assistance.
NOTE: Not performing the following will cause early unit failure and considered abuse which is not covered by warranty.

MNL_Standard-NoSpecs_ACWC-18to240-E-_(0713).docx - 14 -
6. FLUID SYSTEM CONNECTIONS (INSPECT FOR
LEAKS OR LOOSE)
a. Visually check for fluid leaks throughout
system. Physically check for loose pipe
fittings or hoses. Ensure that no plumbing
parts are wearing, cracking, or chaffing.
b. Check the pumps for leakage. Visual
indication of leakage from the pump end at
the pump connection to the motor is usually
an indication of a seal failure. Only action is
to replace the seal with a new seal. Seals are
a consumable item.
7. MOTOR LOADS (COMPRESSOR, PUMPS, FANS,
ETC...) CHECK AMPS/OPERATION
a. Use an amp-meter to check for proper current
draws on all motors and heaters. Refer to the
chiller’s electrical schematics or the motor
nameplate for proper amp draws. Log
readings.
8. ELECTRICAL CONNECTIONS (CHECK ALL WIRING
FOR LOOSE, CHAFFING, OR DAMAGE)
a. Disconnect power to the chiller. Check the
electrical box and all junction boxes for any
loose or damaged wiring. Replace any wiring
that could cause problems with shorting or
unintentional grounds.
b. Check the condition of the contactor points
for the compressor and pump. Replace them
if the edges become jagged or splattered to
avoid premature compressor and/or pump
failure. Contactor points are consumable and
their life is dependent on the amount of use
and power characteristics at the unit.
9. REFRIGERATION SYSTEM FOR LEAKS (INSPECT
AND TEST)
a. If the system is operating and there is no
indication of leaks, avoid accessing the system
unless necessary.
b. Have a certified refrigeration technician check
the refrigeration system for proper operation.
c. Leak check the unit, monitor operating
pressures, and adjust as needed. Refer to
manual for proper charging instructions.
10. CASTER WHEELS AND SWIVELS
a. Wheels may require frequent lubrication
based on the amount of use. Use good quality
bearing grease and pump it into the grease
fittings on the axle and swivel.
11. COMPARE TEMPERATURE READOUT WITH
ACTUAL TEMPERATURE
a. Use an independent thermometer (or
multiple for averaging) and compare to the
actual digital temperature display. If the
temperature varies more than a few degrees,
check condition of thermocouple/sensor.
Variation more than a few degrees is usually
not common.
b. If the temperature controller is located in a
different location than the
thermocouple/sensor, then it may be
necessary to adjust the offset in the controller
parameters. Contact Cold Shot Chillers for
assistance.
12. WINTERIZATION
a. During cold operation months, the chiller
piping exposed to freezing temperatures
should be protected or damage will result. If
the system is not needed during winter
months, a possible option is to drain the
system of all fluid and tag the system for non-
use until needed again.
b. All fluid must be removed from all
components and piping to prevent possible
damage.
c. Follow the startup instructions in the manual
for refilling and startup.

MNL_Standard-NoSpecs_ACWC-18to240-E-_(0713).docx - 15 -
VII. TROUBLESHOOTING (BASIC GUIDE)
• The Troubleshooting Guide below is to be used as a guide only. All work should be performed by a trained
technician and only with proper understanding of the system. Contact manufacturer for further assistance.
• Prior to resetting any safety devices, ensure that the issue is resolved or use care in operating the system until
the cause is determined.
SYMPTOM AND PROBABLE CAUSE
PROBABLE REMEDY
COMPRESSOR DOES NOT RUN
1. Power line open.
1. Reset circuit breaker/disconnect.
2. Contactor stuck open.
2. Replace contactor.
3. Loose terminal connection.
3. Check connections. Tighten.
4. Improperly wired controls.
4. Check and rewire.
5. Seized compressor.
5. Check motor winding for open or short. Replace
compressor, if necessary. Determine cause.
6. Low line voltage.
6. Check line voltage — determine location of voltage
drop and remedy deficiency.
7. Compressor motor defective.
7. Check motor winding for open or short. Replace
compressor, if necessary.
8. Flow Safety Tripped
8. Determine cause of low flow issue and resolve.
- Check reason for no flow. If flow is present,
verify amount (~3 gpm/ton).
-
Verify flow is sufficient to the evaporator
during all process circuit operations.
- Adjust fluid bypass valve to increase flow.
- Do not reset unless issue has been resolved.
- Troubleshoot the switch. DO NOT BYPASS!
IMPORTANT! This condition can occur when
the fluid in the evaporator nears freezing.
9. Flow Switch Tripped (switch open)
9. Determine cause of low flow issue and resolve.
(See Flow Safety Tripped)
10. Freeze Safety Tripped
10. Determine cause of low flow issue and resolve.
(1) (See Flow Safety Tripped)- Typically,
this is an automatic reset.
COMPRESSOR STOPS ON LOW-PRESSURE SWITCH
1. Compressor suction shutoff valve partially closed.
1. Open valve.
2. Low refrigerant charge.
2. Determine cause of low refrigerant. Add
refrigerant.
3. Liquid line solenoid valve(s) fails to open.
3. Check liquid line solenoid valve for proper
operation. Replace if necessary.
4. Liquid line shutoff valve closed.
4. Open valve.
COMPRESSOR STOPS ON HIGH-PRESSURE SWITCH
1. Compressor discharge valve partially closed.
1. Open valve or replace if defective.
2. Air in refrigerant system.
2. Purge and evacuate system, as appropriate.
3. Condenser fan(s) not operating.
3. Check, then repair or replace if defective:
a. Motor/motor wiring.
b. Head pressure switch.
c. Capacitors.
4. System is overcharged.
4. Reclaim charge as needed.
5. Condenser coils dirty.
5. Clean coils, properly.
6. Ambient temperature too high for charge.
6. Reclaim charge as needed.
7. Partially plugged expansion valve or filter drier.
7. Clean or replace.
8. Condenser coils dirty.
8. Clean coils, properly.

MNL_Standard-NoSpecs_ACWC-18to240-E-_(0713).docx - 16 -
SYMPTOM AND PROBABLE CAUSE
PROBABLE REMEDY
UNIT OPERATES TOO LONG OR CONTINUOUSLY
9. Low refrigerant charge.
9. Add refrigerant.
10. Control contacts fused.
10. Replace control.
11. Air in system.
11. Purge and evacuate system.
SYSTEM IS NOISY
1. Piping vibration.
1. Support piping as required.
COMPRESSOR LOSES OIL
1. Leak in system.
1. Repair leak.
2. Crankcase heaters not energized during
shutdown.
2. Check wiring and relays. Check heater and replace
if defective. (Some heaters are always on.)
3. Improper interconnecting piping design.
3. Check piping for oil return. Replace if necessary.
FROSTED SUCTION LINE
1. Expansion valve not operating properly.
1. Adjust expansion valve.
2. Low temperature operation.
2. Verify low temperature operation is proper, verify
superheat.
3. Low refrigerant.
3. Determine cause of low refrigerant. Add
refrigerant.
4. Low fluid flow.
4. Verify fluid flow. Clean strainer and bypass is
throttled to maintain 3gpm/ton.
HOT LIQUID LINE
1. Dirty condenser coil.
1. Clean condenser coil.
2. Expansion valve malfunctioning.
2. Verify Charge and adjust expansion valve.
3. Shortage of refrigerant due to leak.
3. Repair leak and recharge.
4. Overcharged system.
4. Remove refrigerant, adjust charge.
FROSTED LIQUID LINE AFTER DRIER
1. Restricted filter drier.
1. Remove restriction or replace.
COMPRESSOR WILL NOT LOAD/UNLOAD – HOT GAS VALVE OPERATION
1. Defective Hot Gas Bypass valve.
1. Replace valve/solenoid.
2. Defective Capacity Control solenoid/valve.
2. Replace valve/solenoid.
3. Weak, broken, or wrong valve body spring.
3. Replace spring.
4. Program (PLC) not sending signal to solenoid.
4. Verify PLC signal and wiring.
PUMP WILL NOT RUN
1. No Control Circuit Power.
1. Replace Fuse or reset control circuit breaker.
2. No Power to Contactor.
2. Replace Fuse or reset main circuit
breaker/disconnect.
3. Low Line Voltage.
3. Check line voltage — determine location of voltage
drop and remedy deficiency.
-
Excess operation with voltage outside of
tolerance (for example “Brown Outs” will
result in motor damage. (This is considered
abuse and is not covered under Warranty).
4. Contactor stuck open.
4. Verify control voltage to contactor.
- No Voltage – find cause of no voltage.
- Low Voltage - determine location of voltage
drop and remedy.
- Replace contactor.
5. Loose terminal connection.
5. Check connections. Clamp on insulation material.
6. Improperly wired remote controls.
6. Verify wiring, and rewire as needed.

MNL_Standard-NoSpecs_ACWC-18to240-E-_(0713).docx - 17 -
7. Motor defective.
7. Check motor winding for open or short. Replace
motor/pump, if necessary.
VOLTAGE IMBALANCE
1. Voltage Imbalance over 2% - Incoming Power
- (Check Voltage at front and backside of each
contactor during operation.)
1. Main Incoming Voltage –
- A voltage imbalance may be an indication of loose
wires/cable connections or faulty contactors.
- Another issue may be the components
themselves. Troubleshoot if needed.
(2) - If the supply voltage phase imbalance
is still more than 2%, issue may require
contacting
local electric utility
company.
2. Voltage Imbalance over 2% - Load Power
- (Check Voltage at front and backside of each
contactor during operation.)
2. Main Incoming Voltage –
- A voltage imbalance may be an indication of loose
wires/cable connections or faulty contactors.
- Another issue may be the components
themselves. Troubleshoot if needed.
- If the supply
TEMPERATURE CONTROLLER ERROR
1. Temperature indication not accurate.
1. Verify temperature sensor is in good condition and
mounted properly.
-
Adjust the offset (typically it is only adjusted a
few degrees.)
2. Temperature indication or sensor error on
controller.
2. FOR TEST PURPOSES ONLY!
- Turn system off. Disconnect power.
-
Disconnect the thermocouple wires from
controller.
-
Connect a short length of copper wire
between the two contacts on the controller.
- Reconnect power. Turn system on.
- If the controller “actual” is close in range to
the ambient temperature of the controller,
then the thermocouple is bad. – Replace the
thermocouple.
- If the controller “actual” is not in range to the
ambient temperature of the controller, then
the thermocouple may be good, the controller
may have internal issues. –
Replace the
controller or thermocouple input device.

15
MANUAL
MANUAL
TUNE
TUNE
ALARM
1
2
Keypad
Each instrument has either three or four switches, which are used to navigate through the user menus and make
adjustment to the parameter values. See - Overview Of Front Panel above
LED Functions
Table 3. Typical LED functions
LED Function
ON indicates the Setup Mode has been entered.
This LED is labelled on the Over Temperature / Limit Controllers
FLASHING indicates the manual mode has been entered
ON indicates that Controller Self Tune mode is engaged
FLASHING indicates that Controller
Pre-Tune mode is engaged
FLASHING indicates that an alarm condition is present
FLASHES in unison with Time Proportioning Primary outputs, or turns
ON with Valve Motor “Open” outputs. For Current Proportioned out-
puts, ON indicates primary power is >0% It turns ON when the stored
Max.
FLASHES in unison with Time Proportioning Secondary outputs, or
turns ON with Valve Motor “Close” outputs.
For Current Proportioned outputs, ON secondary power is >0%
It turns ON when the stored Min.
Figure 37
Typical front panel and keys
Reset or Auto/Manual Key
Lower or Down Menu Key
Raise or Up Menu Key
Function Key
1/16 DI
TEMPERATURE CONTROLLER - CHROMALOX 6040

16
6 Messages and Error Indications
The following displays are shown when an error occurs or a hardware change is detected.
Table 4. Error/Faults conditions
Error/Faults
Conditions Upper display
Lower
Display
(where fitted)
Configuration & Setup is required. Seen at first turn on or if
hardware configuration changed.
Press to enter Configuration Mode,
next press or to enter the unlock code number,
then press to proceed.
Configuration must be completed before return to operator
mode is allowed1
Goto Conf
Loop alarm set for Auto but Pb_P is set to 0.0% (on/off
control). Loop Alarm uses the manual Loop Alarm Time un-
til PID control is restored. Ensure that lat. is set correctly.
aerr laen
PV Input more than 5% over-range2[HH]*Normal Display
PV Input more than 5% under-range3[LL]*Normal Display
Sensor Break. Break detected in the input sensor or wiring OPEN*Normal Display
Auxiliary input over-range Normal Display [HH]*
Auxiliary input under-range Normal Display [LL]*
Auxiliary Break. Break detected in the auxiliary input Normal Display OPEN*
Option 1 module fault. Err** OPn1
Option 2 module fault. Err** OPn2
Option 3 module fault. Err** OPn3
Option A module fault. Err** OPna
Option B module fault. Err** OPnb
*Note: Input sensor and Auxiliary over/under-range or break indications will be seen wherever these values would normally be
displayed.
1This feature does not guarantee correct configuration. It only helps to ensure that the unit will be configured be-
fore use. Use of set-up mode is not enforced but may be essential for the users application.
2If the PV display exceeds 9999 before 5% over-range is reached, an over-range indication is given.
3Indicators will allow up to 10% under-range on non-zero based Linear ranges. If the PV display is less than
-1999 before the % under-range is reached, an under-range indication is given.

TECHNICAL SPECIFICATION
Marrone & Co., Inc.
2730 Maximilian Drive, Houston, Texas 77032 • Phone [phone]
Fax [phone] • www.waterchillers.com
TechSpec_ACWC-024-E-_-_-_-2_ (0114)
Model: ACWC-24-E-__1-__2-__3-__4
Description:
Single stage air-cooled portable water chiller system. System will provide approximately 24,000 Btu/hr of cooling
capacity with a leaving fluid temperature of 50°F and an ambient air temperature of 95°F.
CAPACITY
±5% AT 50°LCWT / 95°F AMBIENT
24,000 BTU /HR
COMPRESSOR / REFRIGERANT
HERMETIC SCROLL / R-410A
CONDENSER FANS / AIRFLOW
1 / 1920 CFM
CONDENSER COILS TYPE
COPPER TUBE / ALUMINUM FIN
EVAPORATOR TYPE
STAINLESS STEEL / COPPER BRAZED
FLUID CONNECTIONS
1” MNPT (IN/OUT)
ELECTRICAL:
V - Ø - HZ
COMP RLA / LRA
FAN FLA
PUMP FLA
MCA
- 2
230 - 1 - 60
12.8
58.3
0.6
8.0
25
PUMP HP / OUTPUT
1.0 HP / 30 GPM @ 30 PSI
TANK SIZE / CONSTRUCTION
25 GALLON / 304 STAINLESS STEEL TANK WITH LID
DIMENSIONS
40.5” L x 28” W x 45.5” H
WEIGHT (APPROX.)
350 LBS
Note: All specifications subject to change without notice.
Specify Voltage and Ambient Condition upon ordering.
STANDARD FEATURES:
•Controls: Electronic temperature controller with constant (set point & process) temperature readout on standard
units, actual and programmed temperature LED readout.
•Refrigeration Components: Efficient scroll compressors, sight glass/moisture indicators, balance port expansion
valves, filter drier, pump down valves, fan cycling head pressure controls.
•Process Fluid Components: Bronze “Y” strainer with 20 mesh stainless steel screen. Pumps are stainless steel
centrifugal. Tanks are insulated with shoe box lid, fill port, and level sight glass. Portable systems will include a
bypass flow valve.
•Safety Controls: High/low pressure refrigerant pressure, freeze, low water flow, overloads for compressor and
fan motors, safety fuses or overloads for pump.
•Construction: Welded steel powder coated frame and full metal cabinet, copper piping connections.
•Warranty: One year parts / five year compressor.
SUITABLE AMBIENT CONDITIONS/FEATURES:
•IND: Indoor use only. Casters on frame.
•40: Suitable for outdoor use with an ambient of 40°F ambient. Casters, optional.
•0: Suitable for outdoor use to 0°F ambient. Includes low ambient fan speed controls with (LT) models. Casters,
optional.
•M20: Suitable for outdoor use to -20°F ambient. Includes with low ambient fan speed controls with hot gas
bypass. Internal wind baffles. Casters, optional.
1Flow Design (_=Portable, ST=Stationary, RF=Reverse Flow, EXCH=Extra Heat Exchanger, DP=Dual Pump, DR=Dual Return)
2Leaving Fluid Temperature (_=Standard, LT=Low Temperature-specify lowest temperature in °F)
3Ambient Temperature Conditions (see above)
4Electrical Power Code (see above)