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Mueller Compact Chiller Models CP2-10 and CP2-20

Effective May 15, 2009

Installation and Operation Manual, Part No. 8826238

Revised January 31, 2019

      2.4      LIQUID SOLUTION FLOW COMPONENTS

A 3 hp centrifugal pump circulates the chilled solution from the reservoir, through the evaporator heat exchangers

and remote Accu-Therm plate cooler, and back to the reservoir.

The chilled-liquid circulation system incorporates a threaded suction screen located internally in the reservoir at

the suction connection. This will prevent particulate matter from entering the circulation pump, evaporator heat

exchanger, and Accu-Therm plate cooler. It should be removed and cleaned as necessary.

Isolation valves are provided in the liquid solution lines for servicing the pump.

The system has two liquid solution flow switches that utilize normally open (N.O.) contacts connected in series to

the chiller control. In the event of a pump failure, flow blockage, or loss of liquid solution, the paddle in one of the

flow switches will open and de-energize both condensing units. In the event that one of the flow switches breaks

the control circuit and de-energizes the condensing units, the units will re-energize when the switch is closed

again, indicating adequate fluid flow. 

This condition indicates that there was a flow restriction and a service technician should be contacted to

troubleshoot and repair the cause prior to multiple restarts.

IMPORTANT: The above condition could be caused by improper temperature settings of the electronic

temperature control. Multiple restarts prior to repair or adjustment could cause a non-warranted failure

of an evaporator due to expansion from freezing.

The 90-gallon insulated reservoir is constructed of polyethylene. The cover should remain on the reservoir at all

times to prevent particulate and contaminants from entering the liquid solution.

      2.5      ELECTRICAL COMPONENTS

The Mueller compact chiller comes with a complete electrical control system. The electronic temperature control

is housed in a separate enclosure. The multi-stage chiller control must be mounted and wired to the flow switches

condensing units, temperature sensors, and pump.

The power supply must be connected to a 240 volt, 60 hertz, single-phase fused disconnect, fused at a maximum of

20 amps.

IMPORTANT: Do not expose the electrical control enclosure to ambients above 140°F or below 32°F.

All wiring must be performed in accordance with the National Electric Code (NEC) or regulatory agency for the

installation locality.

      2.6      CONTROL OPERATION

See the Mueller multi-stage chiller control manual (Part No. 8825582) for control operation.

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Summary of Contents for CP2-10

Page 1: ...Part No 8826238 Effective May 15 2009 Revised January 31 2019 Compact Chiller Models CP2 10 and CP2 20 INSTALLATION AND OPERATION MANUAL...

Page 2: ......

Page 3: ...2 4 Liquid Solution Flow Components 4 2 5 Electrical Components 4 2 6 Control Operation 4 Section 3 0 Installation 3 1 Inspection 5 3 2 Location 5 3 3 Chilled Solution Piping 5 3 5 Condensing Unit In...

Page 4: ...ypical Freezing Points of Aqueous Solution of Dowfrost 8 Section 5 0 Evacuation Charging and Start Up of System 5 1 System Evacuation 9 5 2 System Charging Also Refer to Condensing Unit Manual 9 5 3 S...

Page 5: ...rm Equipment Service Department 1600 West Phelps Street Springfield Missouri 65802 Direct Telephone 1 800 756 5991 Facsimile 1 800 436 2466 Email DFETechService paulmueller com 1 3 SAFETY STATEMENT El...

Page 6: ...Requirements One 1 Mueller CP2 compact chiller Two 2 5 hp or 3 5 hp Mueller E Star HiPerForm OHSE or OESE condensing units or Two 2 9 hp Mueller E Star HiPerForm OHSE or OESE condensing units Refrige...

Page 7: ...ion 2 3 EVAPORATOR The Mueller compact chiller uses two totally enclosed heavy duty stainless steel evaporators that will provide years of trouble free operation when properly installed and controlled...

Page 8: ...again indicating adequate fluid flow This condition indicates that there was a flow restriction and a service technician should be contacted to troubleshoot and repair the cause prior to multiple res...

Page 9: ...ocate the chiller as close to the Mueller Accu Therm plate cooler as possible This will improve efficiency by reducing heat gain and flow restrictions in the chilled liquid solution piping 3 3 CHILLED...

Page 10: ...se with the Mueller compact chiller Table 1 E Star HiPerForm Refrigerant Charge should be followed The table displays only a startup refrigerant charge Normal refrigeration unit startup procedures loc...

Page 11: ...areas that are not submerged 3 Drain the wash solution and fill with 30 50 gallons of lukewarm rinse water 4 Operate the circulating pump for 10 minutes while manually rinsing the reservoir walls that...

Page 12: ...le 2 provides freeze points of Dowfrost solutions at specific concentration percentages Please contact the Mueller Dairy Farm Equipment Service Department for assistance in locating a local Dow Chemic...

Page 13: ...is above the freeze point of the liquid solution or 32 F 2 With the charging line connected to the receiver service valve admit liquid refrigerant into the high side of the system until the flow stop...

Page 14: ...efer to the specific condensing unit manual IMPORTANT Controlled warm water circulation must be maintained through the evaporator to prevent damage caused by freezing when testing the low pressure swi...

Page 15: ......

Page 16: ...1600 West Phelps Street Springfield Missouri 65802 U S A DFE Service 1 800 756 5991 DFETechService paulmueller com 1 800 MUELLER WWW PAULMUELLER COM 2019 Paul Mueller Company 8826238...

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