Instruction/ maintenance manual of the product TM Series Cooling Tower Delta
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Revised 1-8-2007 Delta Cooling Towers, Inc. TM Series Cooling Tower Installation, Operation & Maintenance Manual.
Revised 1-8-2007 1 Table of Contents Delta Cooling Towers Principle of Cooling Towers………………..……………. 2 Cooling Tower Terms and Definitions…………………… 2 Water Treatment……..………………………….………..
Revised 1-8-2007 2 Delta Cooling Towers Principle of Cooling Towers All Cooling Towers operate on the principle of removing heat from water by evaporating a sm all portion of the water that is recirculated through the unit. The heat that is removed is called the latent heat of vaporization.
Revised 1-8-2007 3 Water Treatment • The Delta Cooling Towers are manufactured from corrosion-resistant plastics which are resistant to water treatment chemicals including com mon fungicides and bactericides. • Follow appropriate water treatment practices as require d and take frequent sample tests to avoid possible water contamination.
Revised 1-8-2007 4 Approximate Weights The TM Series cooling towers are manufactured in three basic sections; a polyethylene tower body, a polyethylene sump, and a fan assembly section. The tower body ships with the fan assem blies installed. The tower sump ships as a separate piece.
Revised 1-8-2007 5 Handling and Installation of Your TM Series Cooling Tower On -Site Inspection Upon arrival at the job site, carefully inspect the shipment for any damage. If shipping dam age has occurred, notify the driver or the carrier immediately and m ake a notation of the damage on the shipping bill of lading.
Revised 1-8-2007 6 Store tower assembly as shipped until the time of installation, in a secure, level and debris free location at the job site. CAUTION : For extended lifts, use duplicate rigging, fabric slings around body as shown, as an additional safety precaution.
Revised 1-8-2007 7 • The body section should then be lifted and carefully position to align the support post of the sump with the corresponding groove of the tower body. Note that the four corner posts are slightly higher than other post to ease installation alignment.
Revised 1-8-2007 8 • On multi cell towers, install PVC water redirector panels between each sump using self-tapping screws provided (See sketch below). Start with screwing the PVC post from the bottom up. Next apply a heavy bead of RTV sealant on the end of each redirector panel.
Revised 1-8-2007 9 Electrical Wiring of Fan Motor and Accessories • Installation of a vibration cut-out switch is recommended. (Refer to tower accessories available). • All electrical work should be performed only by qualified personnel and in accordance to prevailing electrical codes, practices and safety standards.
Revised 1-8-2007 10 PVC Solvent Cementing Instructions The following procedure is recommended for the preparation and cem enting of internal and external piping for Delta Cooling Towers: • Cut ends of pipe square using a handsaw and miter box.
Revised 1-8-2007 11 Operation and Maintenance of Your TM Series Cooling Tower Safety in Operation of the Fan NEVER operate the fan when the access panel or the entire fan guard is removed. NEVER remove access manhole cover while fan is in operation. NEVER operate fan when any work, access, maintenance, trouble-shooting, etc.
Revised 1-8-2007 12 • The maximum operating inlet water temperature should not exceed 140° F. CAUTION: When stepping on top of the fill, distribute th e body weight by means of two plywood plates as described earlier in these instructions.
Revised 1-8-2007 13 • Check spray pattern from nozzles to be sure there is no clogging. Remove drift elim inators for nozzle inspection, then return to proper position. • Start up fan motor and check amperage and voltage against m otor nameplate data.
Revised 1-8-2007 14 Cold Weather Operation Cold Weather Protection The cooling tower may require protection against freezing at light heat loads when the wet-bulb temperature is under 32°F.
15 PVC Distribution System To prevent damage to the PVC distribution system during cold weather shut-down, install an automatic or manual drain line from the hot water inlet piping as close to the cooling tower inlet as possible. The entire inlet and distribution system must be drained for shut-down in sub- freezing weather.
16 Trouble-Shooting Guide For TM Series Induced Draft Cooling Towers Problem Possible Causes Corrective Actions Increase in the leaving water temperature 1. Excess water flow; over pumping. 2. Recirculation of hot discharge air, back into the cooling tower air intakes.
17 Problem Possible Causes Corrective Actions 2. Airlock. 3. Unnecessary obstruction of waterflow (i.e., partially closed valve). 4. Undersized piping. 5. Horizontal pipe run too long. 6. Improper hydraulic pipe design. 7. Outlet vortex breaker provided.
18 Motor Trouble Shooting Guide (General) Problem Possible Causes Corrective Actions High current draw (all 3 phases) 1. Low line voltage (5 to 10% lower than nameplate). 2. 200V motor on 230/240V system. 3. 230V motor on 208V system. 4. Incorrect propeller.
19 TM Series Optional Accessories TM Series Optional Accessories Available Aluminum Ladder(s) with a step platform and railing at the fan elevation custom designed for the cooling tower. Safety cage(s). Two speed motor(s) designed for cooling tower duty to the exclusive specifications of Delta Cooling Towers.
20 Preventative Maintenance Checklist Procedure Monthly Every 3 Months Every 6 months Inspect General Condition of cooling tower. ¨ Check Water Level in cold water basin. Adjust if needed. ¨ Check float ball & Make-up Valve for proper operation.
An important point after buying a device Delta TM Series Cooling Tower (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Delta TM Series Cooling Tower yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Delta TM Series Cooling Tower - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Delta TM Series Cooling Tower you will learn all the available features of the product, as well as information on its operation. The information that you get Delta TM Series Cooling Tower will certainly help you make a decision on the purchase.
If you already are a holder of Delta TM Series Cooling Tower, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Delta TM Series Cooling Tower.
However, one of the most important roles played by the user manual is to help in solving problems with Delta TM Series Cooling Tower. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Delta TM Series Cooling Tower along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
