AIR CONDITIONER SYSTEMS FOR ELECTRONIC ENCLOSURES OPERATIONS AND INSTALLATION MANUAL 1
Operation and Installation Manual **IMPORTANT** For safe and satisfactory operation, please read this manual and follow the instructions for installation and operation of this system. Keep this manual for future reference. Some information may not apply to your system.
Introduction DDB computer and electronics enclosure cooling systems have been designed to provide a friendly environment for your equipment by cooling and de-humidifying the enclosure, which houses your equipment in an efficient, modern, aesthetically pleasing package requiring minimal maintenance. The closed-loop circulation design also protects your equipment from air-borne dust and contaminants, which may hinder your equipment operations and cause unnecessary downtime.
Basic Operation The DDB air conditioning system is actually three systems, which function simultaneously to maintain environmentally friendly conditions for your equipment within the enclosure. These are the closed-loop cold air system, the warm air system, and the vapor-compression refrigeration system. The closed-loop cold air system circulates cold air from the cooling system to the electronics enclosure.
Pre-Installation Test Before installing the system on your enclosure, it is a good idea to operate the unit for a few minutes to ensure it is functioning properly. Although the system has been tested at the factory, internal damage may have occurred during shipping which may not have been apparent during the unpacking inspection. This procedure will also help to familiarize you with the unit. 1. Place the system on a solid base such as a workbench or table. Be sure to allow for adequate space for airflow.
Preparing the Enclosure DDB air conditioning systems have been designed to be lighter in weight for easy installation. Our wall (vertical) mount units have been designed with a simple “two stud” alignment feature to make initial fastening to the enclosure quick and easy. A few modifications must be made to your enclosure to provide proper air flow, maintain enclosure integrity and assure secure installation. Required modifications will vary with air conditioner model. 1.
**Note** Near the bottom or on the side of the cabinet, you will find a nipple which is for condensate overflow. Although all DDB units have built-in condensate management systems, you may find it necessary to attach a hose to this nipple on enclosures that are located in extremely humid conditions, when enclosure doors become left open or the door seals are leaking. Top mount models do not have a built in condensate evaporation system.
If you wish to change the factory default settings, you must enter the programming code which is factory set at the sequence of : Adjust-up (1) arrow, Adjust-down (2) arrow, Select (3), then Exit (4). After pressing the above sequence and the code is accepted, the program LED should be on, and the digital display on the face of the controller should be flashing three alternating boxes. If no selection is made within one minute, the system returns to the normal operating mode.
Press the Select (3) button to continue. The code LED is on and the display shows PIN. To set a new user PIN code, press the Adjust-up (1) button. The display will flash 4, prompting an entry of a four button sequence using the Adjust –up (1), Adjust-down (2), Select (3) and/or Exit (4) buttons. (Any sequence of the four buttons may be programmed as your code.) As the buttons are pressed, the display will show the number of buttons pressed.
3. The filter day timer has expired. The alarm LED lights, the display flashes showing FIL, the filter LED flashes with the display and the audible alarm sounds (if activated). The filter alarm may be cleared by pressing Exit (4). Maintenance The air conditioning system should provide many years of trouble-free operation with a minimal amount of maintenance. Primary maintenance consists of checking the condition of the ambient air filter and condensate management system. 1.
After all debris has been removed from the system, replace the cover onto the unit being careful not to pinch or damage the wiring connecting the cover to the base. Another part of the system which may need cleaned occasionally is the cooling system cabinet. To clean the system cabinet, simply wipe it with a damp, lint free cloth. A mild soap solution may be used if necessary.
Warranty The Seller warrants to the original Buyer that the products manufactured by the Seller are free from defects in material and workmanship. If the Buyer notifies the Seller within ONE YEAR of any such defects (the “Warranty Period”), and returns the products to Seller at Buyer’s sole expense, Seller shall, at its option, repair the products, or replace them with products of comparable value.
