Related Manuals for Seresco NG Series
Summary of Contents for Seresco NG Series
- Page 1 NG SERIES DRY COOLERS OPERATIONS AND MAINTENANCE MANUAL S e r e s c o D e h u m i d i f i e r s . c o m...
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Page 2: Table Of Contents
Table of Content General Information ........................2 Document Scope ............................2 Operating Safety (Warnings, Cautions, and Notes) ................... 2 Basic Information ............................4 Operation and Control ..........................7 Layout and Components ........................ 9 Basic Maintenance ........................12 Maintenance and Safety .......................... 12 Maintenance Key Points .......................... -
Page 3: General Information
• Be aware of hot surfaces (hot refrigeration, space heating pipes, coils, heaters, etc.) Beware of pressures and chemicals! • Operating equipment may contain glycol-based cooling media mixture under pressure! Seresco NG Series - Dry Coolers OMM September 2020... - Page 4 Failure to do so could negatively affect system performance. It could also lead to equipment damage, malfunction, premature wear and tear and may void equipment warranty. September 2020 Seresco NG Series - Dry Coolers OMM...
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Page 5: Basic Information
Basic Information View and Options The views of standard NG series dry coolers are shown on Pic.C.1. and C.2 below. Dry cooler Options • Capacity. NG series dry coolers range broadly in their capacities, which depends on factors including physical size, fluid flow rate, glycol concentration and ambient conditions. - Page 6 (self- controlled): cooler is equipped with aquastat to control based Pic. C.2 off fluid temperature. • Dehumidifier- Controlled. Dry coolers can be controlled by up to three Dehumidified Air Solutions dehumidifiers. September 2020 Seresco NG Series - Dry Coolers OMM...
- Page 7 (dehumidifier etc.). Pic. C.3 Operational data: Electrical (voltage, amp draw, HP etc.) Note: The main label shown above is just an example Cooling media (GPM, connection size etc.) Seresco NG Series - Dry Coolers OMM September 2020...
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Page 8: Operation And Control
Pic. C.4 below shows schematic layout of dry cooler operation and media (air and water/glycol) flow. Pic. C.4 For more details on dry cooler piping connection refer to Installation Manual, submittal documentation etc. as well as local Codes and proper field practices. September 2020 Seresco NG Series - Dry Coolers OMM... - Page 9 • Modulating (EC-type) fans are capable of varying their speed (from 0 to 100%) based on 0-10VDC signal. These fans are standard on NG series dry coolers built since 2020 and may be found on some built prior. • Two-speed fans are capable of running in two alternative speed (low or high); normally done by switching between “star”...
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Page 10: Layout And Components
(number of fans and coils, composition, etc.). Refer to Views and Options (Basic Information chapter) for additional information: Dry cooler Main Components Pic. D.1 September 2020 Seresco NG Series - Dry Coolers OMM... - Page 11 Depending on the specifics of the dry cooler (size, type of fans, control method etc.), electrical box layout and components may vary – refer to your dry cooler submittal, wiring diagram and other documentation. Seresco NG Series - Dry Coolers OMM September 2020...
- Page 12 Dry coolers, if equipped with such option, would have a pump package box. Pic.D.6 below shows general layout of pump packages, used for NG series: NG-Z (a) and NG-V (b) type, respectively. Note that the package used with NG- V coolers is normally mounted onto the cooler directly, however, it also could be provided separately.
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Page 13: Basic Maintenance
(be aware that list below is a suggestion only - frequency and tasks may vary per installation, based on various factors like ambient environment cleanliness, type of equipment etc.): Seresco NG Series - Dry Coolers OMM September 2020... -
Page 14: Airside Coil(S) Cleaning
September 2020 Seresco NG Series - Dry Coolers OMM... -
Page 15: Warranty
Email: Warranty@DehumidifiedAirServices.com Seresco warrants as set forth and for the time periods shown below that it will provide through either a DASV Service Technician or an authorized service organization specified and approved by DASV, a new or rebuilt part to replace a factory installed part which has failed because of defect in workmanship or material. - Page 16 Replacement Part Warranty If a replacement part provided by Seresco under this warranty fails due to a material defect prior to the end of the Two-Year Parts Warranty (or the end of the extended warranty period if applicable), whichever comes first, Seresco will provide a new or rebuilt part F.O.B.
- Page 17 This warranty gives specific legal rights. Other rights may vary according to local legislation. Force Majeure Seresco will not be liable for delay or failure to provide warranty service due to government restrictions or restraints, war, strikes, material shortages, acts of God or other causes beyond Seresco control.
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