KES Touchscreen User Manual 2009
Contents
1. O 0 Lo N SECTION VIEW OF DISASSEMBLE FUSIBLE LINK DN RevLow Maintenance and Operating Manual 4 UP TO 18 PINA Y NN WIDTH FIRE DAMPER BLADE i FIRE DAMPER 2 EXHAUST DUCT SHAFT COLLAR PERIMETER SPRING OVER 18 UP TO 32 PIN PIN Eu FIRE DAMPER j EX Ens cA WIDTH _ FIRE DAMPER E fo EXHAUST DUCT SHAFT COLLAR PERIMETER SPRING UNDERSIDE OF TOP OF HOOD DAMPERS OVER 32 PIN PINS FIRE DAMPER i 1 BLADE al WIDTH us AC xX x pd X d X 7 i EXHAUST DUCT COLLAR PERIMETER SPRING SPRING FIRE DAMPER SHAFT UNDERSIDE OF TOP OF HOOD LEGEND H CABLE BLOCK FUSIBLE LINK Brera S S FUSIBLE LINK CABLE PIN WELDED TO FIRE DAMPER BLADE SPRING WELDED TO DUCT COLLAR DN RevLow Maintenance and Operating Manual ADJUSTING THE FIRE DAMPER BLADE POSITION The fire damper fusible links springs and cable blocks are all accessible through the front on the hood For dry extractors and cartridge remove the inserts near the center of the hood Remove the insert DRY EXTRACTOR INSERT IN PLACE DRY EXTRACTOR INSERT IN REMOVE The blade position is adjusted by removing the fusible link cable a2. A l man End mullion WC Front of core extractor Variflow Baffle Core extractor slot Shown in full open position N N Grease trough lt Core extractor slot Section View of Core Extractor for DD B F Reviow Hood Figure 3 The RevLow accomplishes this complicated process with a unique core extractor profile that contains a series of specially designed variflow baffles located along length of the core extractor See Figure 3 above The variflow baffles are adjusted prior to shipment to allow the optimum amount of the air mixture to enter the core extractor slot and thereby minimize roll back into the hood canopy For instance the variflow baffles located above a Charbroiler are opened to the maximum 450 CFM ft position and the variflow baffles located above ovens or steamers are closed to the minimum 90 CFMf ft position This variable adjustment along the length of each hood provides an exhaust system that truly minimizes the amount of exhaust air to properly ventilate any kitchen line up DN RevLow Maintenance and Operating Manual 2 VARIFLOW BAFFLE SETTINGS 1 LIGH T MP JIUM MEDIUM AT A vA LX L 1 J GHT VU TX f BY T 1 ENS vl HE J Variflow Baffle labeling Figure 5 AVY cS V 1 Each baffle is assigned a setting based on the type of appliance
3. 8 If the total supply volume was not correct and Spring Air Systems provided the supply fan unit then adjust the supply volume at the fan unit or at field supplied balancing dampers If the supply fan unit was not provided by Spring Air Systems advise the general contractor to adjust the supply air volume and do not proceed unit the volume has been correct The total supply volume required can be found on the Spring Air Systems shop drawings HOOD CANOPY LLLA HOOD CANOPY EMD VIEW END VIEW DD RevLow Maintenance and Operating Manual 11 Measuring supply airflow through the Custom Comfort Dial 1 Remove Blade front discharge perforated panel with appropriate tools 2 Turn Blade s threaded rod clockwise until the blade is 1 5 inches off the vertical front surface of the hood See diagram below the hood See diagram below velocity 3 Set the velometer parallel to the bottom discharge with the face open perpendicular to the perforated screen where the air discharges and take a reading every 12 apart for the full length of 4 Total all velocity readings and divide by the number of reading to determine the average 5 Refer to Custom Comfort Dial Velocity Chart below Based on the hood length and the temperature rating indicated on the UL ULC plate determine the Custom Comfort Dial Velocity 6 If the measured average velocity is too high turn the Blade threaded rod counter clockwise 5 times Re measure a
4. Spring Air remote panel is on If not check the breaker panel or fuse check if the motor starters have pulled in Press the red reset button and finally check fan belts in exhaust fan s on the roof TruFlow systems check Operation Status window for messages f necessary call a service technician 4 Goto the makeup air diffusers and check for air movement from the supply unit If no air movement check motor starter push red reset button check fan belts on unit on roof TruFlow systems check Operation Status window for messages If necessary call a service technician 5 Check that all the grease inserts are in the hoods and installed properly At the end of the day 1 After the cooking equipment has been turned off rotate the occupied Unoccupied switch to the unoccupied position to shut off the exhaust system Touch the fan on off icon on the Power window if system is not setup on automatic start stop schedule The exhaust and supply fan s will shut down 2 The RevLow hood will deposit particulate on both the hood backwall and roof Wipe down the stainless steel backwall above the appliances and the interior of the hood including the back and roof Use a recognized hood degreaser Wipe down the underside of the grease trough This is located directly above the cooks head a Wipe Interior of Hood Empty Grease Cup Steam Clean Interior At the end of every other cooking day 1 Empty the grease cups located unde
5. TARTUP REPORT Description Complete set of drawings Appliance lineup under each hood After arriving at site Description Inspect the hoods for damage if yes add description below Remove the inserts and check the internal adjustable baffle settings for each hood and correct as required to match the drawings Check that all inserts are properly in place in each hood Check that each exhaust duct collar is free and clear For DD hoods with fire dampers check that each fire damper operates freely and is set in the open position Check the actual site appliance layout SIZE AND LOCATION OF APPLIANCES against the appliance layout received for each hood in the startup package If the appliance layout is different contact Spring Air head office at 1 866 874 4505 for revised baffle settings Check that the cooking appliances are pushed all the way back against the wall or as far back as possible If front edge is closer that 9 to hood front contact Spring Air head office from site Check if there is a high shelf over any of the appliances Note which appliance Turn off the all appliances under the hood s Check the mounting height of lower front edge of each hood to finished floor inches Damage details DD RevLow Maintenance and Operating Manual 14 Exhaust and Supply fan Information Description Please Fill In Exhaust fan manufacturer Exhaust fan model number Exhaust fan motor horsepower Exhaust fa
6. ad in conjunction with a powdered cleanser TROUBLE SHOOTING Low air i Improper exhaust fan rotation ii Broken or slipping belt iii Exhaust ductwork inspection door open iv Obstruction in the ductwork iv Flow flow baffle must be adjusted No Air i Broken belt ii Exhaust fan overload tripped iii Exhaust fan disconnect open iv Exhaust fan motor fuse blown v Fire damper closed vi Check if baffles are upside down in extractor DN RevLow Maintenance and Operating Manual 8 MEASURING THE EXHAUST AIRFLOW The exhaust air is measured along the inlet slot of the ventilator To ensure accurate results take a reading every foot along the length of the ventilator is recommended VARIFLOW a VARIFLOW BAFFLE PITOT TUBE OR ANEMOMETER VANAXIAL VELOMETER Hold the instrument perpendicular to the Hold the instrument perpendicular to the VORTEX BAFFLE and parallel to the throat inlet VORTEX BAFFLE and parallel to the throat slot of the ventilator Take three readings inlet slot of the ventilator Velometer should across the throat and average the results per not exceed three inches in diameter Take insert one measurement per insert Calculating the Exhaust Air Calculate the average velocity across the inlet slot and refer to the chart below for the corresponding CFM ft I s m Ventilator Type Velo
7. city Exhaust Air Volume Fpm m s CFM ft I s m DD B F DD DI 450 2 3 100 140 DD B F DD DI 675 3 4 150 210 DD B F DD DI 900 4 6 200 275 DD B F DD DI 1125 5 7 250 340 DD B F DD DI 1350 6 9 300 410 DD B F DD DI 1575 8 0 350 480 DD B F DD DI 1800 9 2 400 550 DD B F DD DI 2000 10 2 450 620 DD B F DD DI 2250 11 5 500 690 DD B F DD DI 2450 12 5 550 755 DN RevLow Maintenance and Operating Manual INSTALLING THE TERMINATOR BAFFLE TERMINATOR BAFLLE C B i ADJUSTABLE BAFFLE B REMOVEABLE ACCESS A The TBDD Terminator baffle is available in various lengths to suit adverse site conditions This will provide additional exhaust air over heavy appliances that are being effected by the surrounding environment Installation Remove the TBDD from the packing material Take off all of the Removable Access Doors A from the hood You should be able to clearly see all the adjustable baffles B and their settings Ensure that the adjustable baffle s B over the heavy appliance is set at 5 or 3 if the baffle is directly beneath the exhaust duct collar The TBDD baffles C are going to be installed on the adjustable baffles B over the light appliances To install the TBDD baffle C onto the adjustable baffle B simply line up the gap on the TBDD baffle C with the lower end of baffle B Tap the TBBD along the length until it is snug on baffle B If the fit is loose remove the TBBD ba
8. e Spring Arr Solutions for Energy Savings DD Rev Low Maintenance Manual Spring Air Systems Inc Oakville Ontario Phone 866 874 4505 Fax 905 338 0179 info springairsystems com 2010 Update DD REV LOW Maintenance and Operating Manual Table of Contents Introduction Spring Air Systems Hood Model Number Designations Principle of Operation Variflow Baffles Baffle Settings Arrangement D Fire Damper Assemblies Adjusting the Fire Damper Blade Position RevLow Maintenance Instruction Cleaning the Exterior Adjusting the Fire Damper Blade Position CO 00 CO NI DV BB W WD RR Trouble Shooting Measuring the Exhaust Airflow 9 Installing the Terminator Baffles 10 Measuring the Supply Airflow MB models only 11 Measuring the Supply Airflow MJ models only 13 Startup Report 14 INTRODUCTION Thank you for selecting a SPRING AIR SYSTEMS INC Commercial kitchen exhaust Rev Low dry extractor Your system consists of a dry extractor exhaust fan and on off switch or control panel Others manufacturers may have supplied the exhaust fan and on off operator Your SPRING AIR SYSTEMS INC Dry extractor model was selected to best meet the design requirements of your commercial kitchen application The DD series dry ventilator is a UL ULC listed Exhaust Hood with Exhaust Fire Damper Typical SPRING AIR SYSTEMS Dry Rev L
9. e with the face open perpendicular to the perforated screen where the air discharges and take a reading every 12 apart for the full length of the hood The first reading should be one inch from the end and continue every twelve inches to the opposite end of the ventilator 5 Total all velocity readings and divide by the number of readings to determine the average velocity 6 Refer to Custom Comfort Dial Velocity Chart below Based on the hood length and the hood temperature rating indicated on the UL ULC plate determine the Custom Comfort Dial velocity on the chart T If the measured average velocity is not correct adjust the rheostat as follows Rotate clockwise for lower or counterclockwise for higher velocity Retake the velocity reading to confirm the recommended set point VARI SPEED RHEOSTAT FN or FB Hood Custom Comfort Dial Velocity Chart Hood CCD VELOCITY fpm APPLIANCES TEMP Length FRONT SIDE ft HE Set point Set point Heavy Charbroiler 600 F 9 14 500 450 Heavy Charbroiler 600 F 6 9 500 450 Heavy Charbroiler 600 F 4 6 550 450 Heavy Charbroiler 600 F Up to 4 550 450 Medium Griddle fryer 400 F 9 14 450 400 Medium Griddle fryer 400 F 6 9 450 400 Medium Griddle fryer 400 F 4 6 450 450 Medium Griddle fryer 400 F Up to 4 450 450 DD RevLow Maintenance and Operating Manual 13 C3 Sor Ng Ausf REV LOW S
10. ffle C and gently tap the gap with a hammer in the middle and at each end Re attach to baffle B Install these baffles on the two adjustable baffles B located on the right or left side of the charbroiler when looking from the front of the hood VARIFLOW BAFFLE 1 LIGHT 2 MEDIUM LIGHT MEDIUM HEAVY VERY HEAVY ERIMINATOR BAFFLE DN RevLow Maintenance and Operating Manual 10 MEASURING THE SUPPLY AIRFLOW MB Measuring the total supply fan airflow through the Blade 1 Remove Blade front discharge perforated panel with appropriate tools 2 Turn Blade s threaded rod counter clockwise until the Blade comes to a fully open position which is required to determine the total supply volume at each hood 3 Turn supply fan on 4 Re install Blade front discharge perforated plate with appropriate tools 5 Take velocity reading across the perforated plate as shown in the diagram below Take two vertical readings one at 2 from the bottom of perforation and one at 4 Repeat these horizontal readings every 12 along the hood 6 Total all readings and divide by the number of reading to determine the average velocity T Multiply the average velocity x 72 x length of perforated panel in inches to determine the total CFM per perforated panel It is critical to take the velocity readings 1 off the surface of the perforated panel to use this formula
11. g on the type of restaurant or institution In every commercial kitchen the cooking vapors that comprise of grease smoke and products of combustion rise off the cooking surface Natural convection forces drive the cooking vapors up towards Roof Of HN woes the back wall as shown in figure 2 The kitchen dilution air is entrained into the cooking vapors and the air ee ice mixture generally follows the profile of the back and top of the hood The mixture of grease smoke NS products of combustion lint dirt and kitchen dilution Av SN Kitchen dilution air air proceed along the roof of the hood and follow a PA o path down towards the core extractor slot the core Vapours from appliances extractor slot extends along the length of the hood An Most of the air mixture enters the slot and a small l amount rolls back into the hood canopy to meet the APPLIANCES main air stream again L l Exhaust Air Core Extractor Variflow baffle Front of hood The REV LOW Hood Model DD B F Figure 2 Optimizing the amount of air mixture that enters the core extractor slot is the key to the RevLow design The RevLow hood must incrementally maximize the amount of the air mixture that enters the slot and minimize the amount of roll back into the canopy as the total amount of the air mixture deviates along the length of the cooking lineup VARIFLOW BAFFLES Exhaust duct collar Top of core extractor
12. haust fan motor fuse blown Fire damper closed Check if baffles are upside down in extractor DD B F Revlow Maintenance and Operating Manual 18 Other Fine Products From D Spring Air Solutions for Energy Savings e RevLow Hoods e Filter Hoods e DynaFlow Hoods e Water Wash Ventilators e TruFlow Energy Management Systems e Surface Fire Suppression e UL ULC Listed Pollution Control Systems e Commercial Kitchen Exhaust Fans e Dry Extractor Hoods e Commercial Kitchen Supply Units e Catridge Hoods e Utility Distribution Systems Phone 866 874 4505 FAX 905 338 0179 info springairsystems com www springairsystems com
13. n voltage Exhaust fan max FLA HANDLE IS UP AND OUT CORRECT UP SIDE DOWN Measuring the Exhaust Volume at the Reviow Hood The exhaust air is measured along the inlet slot of the ventilator To ensure accurate results take a reading every foot along the length of the ventilator is recommended I 7 I M m VARIFLOW VARIFLOW BAFFLE BAFFLE 4 THROAT VORTEX vortex _ BAFFLE LL VELDMETER BAFFLE np A f NN prot 2 Zo TEE LP Xu Sof VANAXIAL VELOMETER PITOT TUBE OR ANEMOMETER Hold the instrument perpendicular to the Hold the instrument perpendicular to the VORTEX BAFFLE and parallel to the throat VORTEX BAFFLE and parallel to the throat inlet inlet slot of the ventilator Velometer should slot of the ventilator Take three readings not exceed three inches in diameter Take across the throat and average the results per one measurement per insert insert DD RevLow Maintenance and Operating Manual 15 Revlow Exhaust Hood Hood Item No Hood Model No Hood Length inches Hood Width inches No of Baffles Baffle Size inches No of 16 Inserts No of 20 inserts Design Exhaust Volume Design Supply Volume Right overhang wall hood open Left overhang wall hood open Front overhand front of appliance to front of hood 1 Confirm appliance line
14. nd block assembly from the damper pin The fire damper will close and the complete assembly will hang loose from the spring Loosen the set screw on the adjustable block and pull the stainless steel cable through the block to open the damper or release cable from the stainless steel block to close the fire damper Once the correct position is reached re tighten the set screw on the adjustable block and re ached the fusible links on the damper pins The single fusible link damper has one block to adjust 3 Single Fusible link Damper The double fusible link damper has two blocks to just and the three fusible link damper has up to four blocks to adjust Two fusible link Damper DN RevLow Maintenance and Operating Manual 6 REVLOW MAINTENANCE INSTRUCTIONS Hood with Spring Air Systems RPD Controller TruFlow Control Panel At the start of the day 1 Rotate the occupied Unoccupied switch to the occupied position to start the exhaust system Touch the fan on off icon on the Power window if system is not setup on automatic start stop schedule The exhaust fan s will turn on and after a minute time delay the supply unit s will turn on 2 Check each hood for air movement in the slot Put your hand up to the entrance of the slot and feel if there is air movement The air movement should feel the strongest over the heavy appliances broilers Check Air Flow in slot 3 If there is no air movement check if the green fan light on the
15. ow Ventilator Installation An ON OFF selector switch or touchscreen located in the kitchen area or mounted on the exhaust fan starter coil electrical enclosure normally controls the exhaust fan SPRING AIR SYSTEMS HOOD MODEL NUMBER DESIGNATIONS There are numerous types and styles of SPRING AIR SYSTEM Rev Low ventilator available Refer to the UL ULC label for the complete model number and exhaust flow requirement for your dry ventilator The UL ULC label is located on the underside of the grease through on the right hand side of the dry ventilator SPRING AIR SYSTEMS HOOD MODEL NUMBER DESIGNATIONS Cold water spray hot water wash H Hot water wash D _ Dry grease extractor Thermostatic Fire Damper F Fusible link spring loaded fire damper D _ Fusible link dead weight fire damper S X Shelftype hood B Box type hood BS Boxshelf type hood DB Double box type hood MG Make up air through front grilles MP Make up air through perforated panels MI Make up air internally MB DynaFlow Tri Zone control system DynaFlow perimeter defense system F Single row canopy finished on all sides Rev Low 10 The length of the ventilator in feet 4 The width of the ventilator in feet Model Number Designation Ventilators Chart No1 DN RevLow Maintenance and Operating Manual 1 PRINCIPLE OF OPERATION A commercial kitchen cooking line consists of many different appliances dependin
16. r the grease trough 2 Remove the grease inserts and wash in a dishwasher or pot sink Use a recognized hood degreaser and clean to bare metal 3 Replace the insert in the hood DN RevLow Maintenance and Operating Manual 7 At the end of the cooking day every six months 1 After removing the grease inserts for cleaning check the position of the Variflow Baffles in the hood The Variflow Baffles should be open over the heavy equipment and closed over the lighter equipment Baffles should be wide open over charbroilers and closed over ovens 2 Steam clean the interior of the grease extractor 3 Go to the roof and check the condition of the exhaust fan and makeup air fan belts Tighten or replace as necessary 4 Replace the makeup air filters Filter replacement times will vary with location of the restaurant Inspect Baffle Positions Check Baffle Setting CLEANING THE EXTERIOR Normal soil can be removed with a mild detergent and water mixture applied to a cloth To remove baked on grease apply a cleanser to a damp cloth or sponge and rub on the metal in the direction of the polishing lines DO NOT RUB IN A CIRCULAR MOTION Burnt deposits which do not respond can usually be removed by rubbing the surface with a SCOTCH BRITE scouring pad of STAINLESS scouring pads DO NOT USE ORDINARY STEEL WOOL Heat tint can be removed by a vigorous scouring in the direction of the polish lines using a SCOTCH BRITE of STAINLESS scouring p
17. rbroiler or other appliance 4 If the smoke drifts left or right then the hood baffle settings must be adjusted where the smoke enters The broiler baffle settings of 4 and or 5 must be adjusted to include all the inserts which the broiler smoke has entered For example if the smoke drifts 24 left from where it left the Charbroiler the broiler baffle settings must be adjusted left at least 24 The baffle setting must be reduced to 1 where the broiler smoke is not entering Exhaust velocities over broilers and woks 1 It is very important that the exhaust velocity over the broilers and Woks are over 1500 fpm at the slot When the velocity is below this value with the baffles at the correct setting then Terminator Baffles High TBH must be installed Add a terminator baffle to each baffle in the hood that is to be set at 1 or 2 2 Measure the exhaust velocities across the hood again and repeat the Exhaust volume calculations 3 If the exhaust velocity over the broiler is still below 1500 fom Terminator Baffles Low TBL will have to be added to all baffles set at 1 and 2 Contact Spring Air Systems service department for these baffles Simple Trouble Shooting Low air e Improper exhaust fan rotation e Broken or slipping belt e Exhaust ductwork inspection door open e Obstruction in the ductwork Variflow baffle must be adjusted No Air Broken belt Exhaust fan overload tripped Exhaust fan disconnect open Ex
18. t overhand front of appliance to front of hood 1 Confirm appliance lineup Call Spring Air Systems 1 866 874 4505 x 28 immediately if different from below APPLIANCE LINEUP 2 Set Variflow Baffles to factory recommended setting Install Terminator baffle on baffles indicated with a on hoods with Charbroiler on common duct fan Left to Right facing hood The baffle directly beneath exhaust duct collar should be set to no higher than 3 3 Calculate the exhaust air volume for each hood following the formula below If the exhaust volume is more than 5 over design or under design AT ALL call Spring Air Systems 1 866 874 4505 x 2 immediately 1 2 3 4 5 Insert No Insert Size Velocity Size correction Exhaust Volume circle one measurement factor SCF CFM circle one Left to right 16 or 20 fpm 16 0 29 fpm x SCF 20 0 37 1 16 20 0 29 0 37 2 16 20 0 29 0 37 3 16 20 0 29 0 37 4 16 20 0 29 0 37 5 16 20 0 29 0 37 6 16 20 0 29 0 37 7 16 20 0 29 0 37 Total CFM add column 5 4 If adjusted record FINAL variflow baffle settings Left to Right facing hood DD RevLow Maintenance and Operating Manual 17 Check for Drafts 1 Turn on appliances 2 Spray cooking oil on the front right of Charbroiler or what other appliance Observe the smoke pattern and record which insert the smoke enters in hood Mark that insert 3 Repeat with left side of Cha
19. under the hood Exhaust duct collar 7 Core extractor Variflow Baffle Front of hood Roof of hood Back Wall Back of hood Drain connection Cu E MK Baffle Closed Baffle Partially Closed Baffle Opened Section View of RevLow Extractor with Detail of Variflow Baffle Figure 4 REMOVEABLE INSERT INSTALLATION HANDLE IS DOWN AND OUT CORRECT UP SIDE DOWN DN RevLow Maintenance and Operating Manual ARRANGMENT D FIRE DAMPER ASSEMBLIES The section view of the exhaust fire damper to the right shows a cross section of the exhaust duct collar fire damper blade fusible link adjustable cable block spring and stainless steel cable when the damper is in the set position In the event of a fire in the exhaust duct collar the fusible link melts releasing the fire damper which closes tight on the damper blade stops and seals The second drawing shows the damper as the fusible link has been removed The damper will rotate clockwise against the damper bar weight and close The complete assembly is part of the UL ULC listed Spring Air Systems Commercial Kitchen Exhaust Hood with Fire Damper DAMPER BLADE DUCT FLANGE DAMPER BLADE STOPS d m SPRING DAMPER BLADE gt STOPS Y CABLE BLOCK FUSIBLE LINK PIN SECTION VIEW OF ASSEMBLE FUSIBLE LINK
20. up Call Spring Air Systems 1 866 874 4505 x 28 immediately if different from below APPLIANCE LINEUP 2 Set Variflow Baffles to factory recommended setting Install Terminator baffle on baffles indicated with a on hoods with Charbroiler on common duct fan Left to Right facing hood The baffle directly beneath exhaust duct collar should be set to no higher than 3 3 Calculate the exhaust air volume for each hood following the formula below If the exhaust volume is more than 5 over design or under design AT ALL call Spring Air Systems 1 866 874 4505 x 2 immediately 1 2 3 4 5 Insert No Insert Size Velocity Size correction Exhaust Volume circle one measurement factor SCF CFM circle one Left to right 16 or 20 fpm 16 0 29 fpm x SCF 20 0 37 1 16 20 0 29 0 37 2 16 20 0 29 0 37 3 16 20 0 29 0 37 4 16 20 0 29 0 37 5 16 20 0 29 0 37 6 16 20 0 29 0 37 7 16 20 0 29 0 37 Total CFM add column 5 4 If adjusted record FINAL variflow baffle settings Left to Right facing hood DD RevLow Maintenance and Operating Manual 16 Revlow Exhaust Hood Hood Item No Hood Model No Hood Length inches Hood Width inches No of Baffles Baffle Size inches No of 16 Inserts No of 20 inserts Design Exhaust Volume Design Supply Volume Right overhang wall hood open Left overhang wall hood open Fron
21. verage velocity Repeat until the measured velocity at Custom Comfort Dial is correct T If the measured average velocity is too low turn the Blade threaded rod clockwise 5 times Re measure average velocity Repeat until the measured velocity of Custom Comfort Dial is correct TER FN or FB Hood Custom Comfort Dial Velocity Chart HOOD CANOPY END MEW Hood CCD VELOCITY fpm APPLIANCES TEMP Length FRONT DE f E Set point Set point Heavy Charbroiler 600 F 9 14 500 450 Heavy Charbroiler 600 F 6 9 500 450 Heavy Charbroiler 600 F 4 6 550 450 Heavy Charbroiler 600 F Up to 4 550 450 Medium Griddle fryer 400 F 9 14 450 400 Medium Griddle fryer 400 F 6 9 450 400 Medium Griddle fryer 400 F 450 450 Medium Griddle fryer 400 F Up to 4 450 450 DD RevLow Maintenance and Operating Manual 12 MEASURING THE SUPPLY AIRFLOW MJ The supply air is measured along the bottom inside discharge opening of the make up air plenum To ensure accurate results take a reading every one foot along the length of the ventilator Measure supply air flow through comfort dial 1 Ensure the MJ blowers are powered when the exhaust fan is activated 2 Locate the rheostat on the back of the MJ Blower which is on top of the MJ plenum 3 Turn the rheostat 120 degree clock wise to activate the MJ blower 4 Set the velometer parallel to the bottom discharg
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