Quest Engineering IQ Series Скачать руководство пользователя страница 13

 

 

 

Quest IQ Dry Cooler OMM

 

12

 

September 2020

 

Basic Maintenance 

 Although dry cooler is built for minimal service downtime, periodic preventative maintenance is required to 
ensure maximum reliability, safety, and operating efficiency.  

 

Maintenance and Safety 

Only qualified/properly trained personnel should attempt to perform respective maintenance tasks.  

 

Live Electric Power!

 When necessary, have a licensed electrician or other qualified professional to perform the 

required task.  

 

Turn the power off.

 

Before performing any maintenance, disconnect all electrical power, including remote 

disconnect, and discharge all energy storing devices (capacitors, VFDs, etc.) before servicing. Follow proper 
lockout procedures to ensure that power cannot be accidentally restored. Failure to follow provided safety 
warnings and labels could result in serious injury or death. 

 

Be properly trained and equipped.

 Some maintenance tasks may involve usage of power tools, chemicals, etc. 

Refer to such tools and materials data (manuals, MSDS, etc.). Personnel performing such maintenance tasks 
should be: 

o

 

Properly trained to handle such tools and materials safely 

o

 

Equipped with proper personal protective equipment 

 

Be aware of potential hazards.

 The equipment contains moving mechanical parts, components with water-

glycol mixture under the pressure (refer to the equipment main label for the details as eeded) and some 
hot/warm surfaces. Before performing any equipment maintenance work, make sure that all moving parts are 
stopped, and it is safe to perform required task. 

 

Maintenance Key Points 

Dry cooler is rather low-maintenance equipment, yet there are some basic/key maintenance considerations: 

 

Ensure that the 

equipment is accessible

 (minimum clearances are maintained): approaches are not 

restricted/limited (with materials, other equipment, manifolds, snow etc.). 

 

Maintain 

clean airside coils surfaces

: make sure to clean coils from cobweb, dust, leaves etc. regularly. 

 

Routine Maintenance Program 

Creating facility-specific routine maintenance program and following it is vital to equipment longevity and efficient 
operation. 
Detailed maintenance recommendations for specific components, as/if needed, could be sourced from respective 
component manufacturer or other documentation.  
The suggested general maintenance tasks and their frequency/intervals, listed below, can be used to create 
mentioned maintenance program (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.): 

 WARNING! 

To ensure equipment longevity and proper and efficient operation, it 

must

 be 

maintained

 

properly. It is recommended to create a 

facility-specific Routine Maintenance Program

.  

Failure to perform necessary maintenance task(s) properly and regularly could result in personal injury, 
equipment damage or malfunction and will void the equipment warranty. 
 

 

Содержание IQ Series

Страница 1: ...Dry Coolers OPERATION AND MAINTENANCE MANUAL QuestClimate com IQ SERIES GROW ROOM HVAC ...

Страница 2: ...c Data 6 Operation and Control 7 Layout and Components 9 Dry cooler Main Components 9 Electrical Box Power and Control 10 Pump Package 11 Basic Maintenance 12 Maintenance and Safety 12 Maintenance Key Points 12 Routine Maintenance Program 12 Specific Components Maintenance and Special Tasks 13 Airside Coil s Cleaning 13 Dry cooler Service 13 Warranty 14 ...

Страница 3: ...RATIONS MAINTENANCE OR SERVICE TASKS Only qualified technicians should install operate maintain or service mechanical equipment including current dehumidification system Read this manual before performing any tasks to familiarize yourself with the equipment as well as with any potential hazards Always exercise caution Beware of electrical power and high electrical voltage Follow proper safety proc...

Страница 4: ...n Installation and Service Contractors WARNING Any work installation start up service maintenance repair etc on any mechanical equipment HVAC system dry cooler etc must be performed in accordance with manufacturer s recommendations as well as submittal documentation local Codes and Regulations and appropriate field practices Failure to do so could result in personal injury equipment damage or malf...

Страница 5: ...e unit o Cooler capacity and number of fans are reflected in its type nomenclature Pic C 2 c shows NG V 62 cooler comprised of six two fans two coils NG V 12 sections Fan type NG series dry coolers have EC motor fans varying speed via 0 10vdc signal See submittal and wiring diagram Cooling media Typically water glycol rust inhibitor infused food grade propylene glycol is used mixture is used as co...

Страница 6: ...lf controlled cooler is equipped with aquastat to control based off fluid temperature Dehumidifier Controlled Dry coolers can be controlled by up to three Dehumidified Air Solutions dehumidifiers Pump package optional As needed dry cooler could be equipped with pump package to establish cooling media flow or to serve as additional booster pump o For multi fans coolers If pump package is required e...

Страница 7: ...the factory Self controlled dry coolers normally do not require external controls connected Equipment Specific Data Specific information for individual dry cooler is provided in the following methods System Nameplate Pic C 3 the manufacturer tag attached to the dry cooler that includes its most critical data General data including Serial Number and Dry cooler Model nomenclature o Serial Number is ...

Страница 8: ...pending on the type of fans modulating EC type or two speed control type and command received cooler total airflow is adjusted by varying fan s speed and or number of operating fans Cooling media flow must be established also either by separately controlled pump part of the external system or by the built in pump package pump In latter case pump would engage with the fan s and will stay engaged wh...

Страница 9: ...ype are modulating 0 10VDC It may control the fan according to head pressure or another control method chosen by installer Self controlled stand alone Dry cooler Fan s speed signal modulating is based on built in control device Most commonly used one is an aquastat monitoring temperature of the cooling media water glycol mixture leaving the dry cooler o Typically aquastat is pre set to maintain en...

Страница 10: ...n on Pic D 1 below While layout and main components are similar for all applicable dry coolers there are some deviations number of fans and coils composition etc Refer to Views and Options Basic Information chapter for additional information Dry cooler Main Components 32 36 35 33 37 31 Pic D 1 33 31 32 36 35 33 34 37 31 31 ...

Страница 11: ... below For NG Z type Fig 3 ONLY Said dry cooler ships with set of legs 34 to provide sufficient space between horizontal mounting surface and airflow intake On site assembly is required for these legs For more details on the installation refer to the Installation Manual Electric power is normally to be brought to disconnect 35 if cooler is equipped with such which feeds it to the electrical box 36...

Страница 12: ...e that the package used with NG V coolers is normally mounted onto the cooler directly however it also could be provided separately Pump 38 establishes glycol mixture circulation through the dry cooler and dehumidifier Expansion tank 39 compensates for temperature based glycol cooling fluid volume fluctuation The pump package electrical sub panel 40 contains the pump package electrical power and c...

Страница 13: ...the details as eeded and some hot warm surfaces Before performing any equipment maintenance work make sure that all moving parts are stopped and it is safe to perform required task Maintenance Key Points Dry cooler is rather low maintenance equipment yet there are some basic key maintenance considerations Ensure that the equipment is accessible minimum clearances are maintained approaches are not ...

Страница 14: ... instructions Thoroughly rinse both sides of the coil and the drain pan with clean water Straighten any coil fins that have been bent during the cleaning process Replace all panels and parts and restore electrical power to the equipment Dry cooler Service Normally dry coolers are filled with glycol mixture to prevent the system and the dry cooler from freezing and potentially rupturing pipes when ...

Страница 15: ...ty During the first 90 days from initial start up all parts and repairs related to factory defects or replacement parts are covered by the Quest manufacturer warranty All parts and labor requirements will either be handled by DASV technicians directly or managed and approved in advance by DASV through DASV authorized technicians Internet Connected Conditional One Year Repair Warranty If and only i...

Страница 16: ...ts on which payment is in default 2 Parts that wear out due to normal usage such as air filters fuses and sensors are not covered by this warranty NOTE Refrigerant lost during the Initial 90 day Comprehensive or Internet Connected Conditional One Year Repair Warranty will be reimbursed in accordance to the current market price of refrigerant at the time of repair and upon discretion of Customer Su...

Страница 17: ...he foregoing limitations and exclusions shall not apply to the extent of the legislation however in such case the balance of the above warranty shall remain in full force and effect This warranty gives specific legal rights Other rights may vary according to local legislation Force Majeure Quest will not be liable for delay or failure to provide warranty service due to government restrictions or r...

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