CH750, CH751 & CH951 CHILLERS Operator’s & Installation Manual Release Date: April 19, 2002 Publication Number: 91256 Revision Date: March 25, 2014 Revision: F Visit the Cornelius web site at www.cornelius.com for all your Literature needs.
The products, technical information, and instructions contained in this manual are subject to change without notice. These instructions are not intended to cover all details or variations of the equipment, nor to provide for every possible contingency in the installation, operation or maintenance of this equipment. This manual assumes that the person(s) working on the equipment have been trained and are skilled in working with electrical, plumbing, pneumatic, and mechanical equipment.
TABLE OF CONTENTS Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Read and Follow ALL Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH Series Chiller Operator’s & Installation Manual SAFETY INSTRUCTIONS READ AND FOLLOW ALL SAFETY INSTRUCTIONS Safety Overview • Read and follow ALL SAFETY INSTRUCTIONS in this manual and any warning/caution labels on the unit (decals, labels or laminated cards). • Read and understand ALL applicable OSHA (Occupational Safety and Health Administration) safety regulations before operating this unit. Recognition Recognize Safety Alerts ! This is the safety alert symbol.
CH Series Chiller Operator’s & Installation Manual SAFETY PRECAUTIONS This unit has been specifically designed to provide protection against personal injury. To ensure continued protection observe the following: ! WARNING: Disconnect power to the unit before servicing following all lock out/tag out procedures established by the user. Verify all of the power is off to the unit before any work is performed. Failure to disconnect the power could result in serious injury, death or equipment damage.
CH Series Chiller Operator’s & Installation Manual INTRODUCTION The Cornelius “CH” Series Water Chillers (Models CH750-A, CH751-A, and CH951-A) are specifically designed to cool clean liquid before it is circulated to the cooling application. The Unit includes a complete refrigeration system and associated controls housed in a sturdy sheet metal enclosure with perforated panels for air circulation.
CH Series Chiller Operator’s & Installation Manual INSTALLATION INSTRUCTIONS LOCATION Locate the chiller indoors in a well ventilated area with ambient temperatures in the range of 65° F to 100° F. Allow a minimum of six inches of clearance around the chiller for proper air circulation. Avoid hot air discharge from other equipment or enclosed areas where heat could build up and cause a rise in ambient temperature. PLUMBING Follow standard plumbing practices and local codes in making water connections.
CH Series Chiller Operator’s & Installation Manual START-UP/OPERATION Before the Unit can be operated, it is important that the circulating system be filled with water (See Fluid Recommendations page). On systems with a reservoir, ensure that the drain plug is in place and the plug is secure. Fill the reservoir through the fill port with clean water. The water level sight glass on the front panel will indicate “Full” when enough water has been added.
CH Series Chiller Operator’s & Installation Manual MAINTENANCE ! WARNING: Disconnect power to the unit before servicing. Follow all lock out/tag out procedures established by the user. Verify all power is off to the unit before performing any work. Failure to comply could result in serious injury, death or damage to the equipment. The chiller requires very little normal maintenance. The condenser fins should be cleaned by blowing compressed air through the condenser.
CH Series Chiller Operator’s & Installation Manual SERVICE ! WARNING: Disconnect power to the unit before servicing. Follow all lock out/tag out procedures established by the user. Verify all power is off to the unit before performing any work. Failure to comply could result in serious injury, death or damage to the equipment. Service of the chiller is limited to replacing the switch, the thermostat, the fan motor, and the pump.
CH Series Chiller Operator’s & Installation Manual FLUID RECOMMENDATIONS Cornelius chillers are designed to operate with water to provide maximum performance for temperatures of 40° F (4.4° C) to 100° F (37.8° C).
CH Series Chiller Operator’s & Installation Manual TROUBLESHOOTING ! WARNING: Disconnect power to the unit before servicing. Follow all lock out/tag out procedures established by the user. Verify all power is off to the unit before performing any work. Failure to comply could result in serious injury, death or damage to the equipment. Trouble Chiller does not operate, Power Light “OFF” No Circulation of Chilled Water Inadequate Cooling © 2002-2014, Cornelius Inc. Problem Cause Remedy A.
CH1001-A Chiller Operator’s & Installation Manual PARTS LIST Figure 2. CH750, CH751 and CH951 Exploded View Table 1. Table 1. Item No. Part No. Description 1 31934 31935 Switch, Illuminated (115V) Switch, Illuminated (230V) 2 32386 Thermostat, Eliwell No. EWPC902 3 620603707 62063706 620603711 620603712 620603713 Blade, Fan (CH750, CH751) Blade, Fan (CH951) Motor, Fan (CH750) Motor, Fan (CH751) Motor, Fan (CH951) * Condenser 4 5 6 7 8 9 Item No.
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