Hobart FT900DBD manuale d’uso

701 S. RIDGE AVENUE TROY, OHIO 45374-0001 937 332-3000 www.hobartcorp.com FORM 44095 (Oct. 2007) FT900 SERIES DISHW ASHERS MODELS ML-110668-U covers all of the following models: FT900 FT900BD FT900S FT900SBD FT900D FT900DBD FT900SD FT900SDBD[...]

– 2 – © HOBART CORPORATION 1998, 2007 TABLE OF CONTENTS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Machine Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Tank Filling . . . . . [...]

– 3 – Pump Intake Screens must be put on holders at each pump intake (Fig. 1). Fig. 1 Strainer Pans must be in place on top of each tank (Fig. 2). Fig. 2 End Caps must be correctly installed at ends of all Wash Arms (Fig. 4). Fig. 4 Wash Arms must be properly installed and latched in place (Fig. 5). Fig. 5 The Final Rinse Arm (and Dual Rinse Ar[...]

– 4 – TANK FILLING Assure proper water hardness. Recommended water hardness is 3 grains or less per gallon. Higher hardness may cause excessive formation of lime scale. Chlorides must not exceed 50 ppm. All water (and steam, if equipped) supply valves must be opened and the electric supply turned on before the machine will function. Close all d[...]

– 5 – DISHWASHING Start the motors for the conveyor, pumps and blower-dryer (if equipped) by pressing the green START switch located at either the load or unload end of the machine (Fig. 10) or on the control box (Fig. 11). The machine will operate only if the tanks have filled to the proper level and all doors are closed. Press the red STOP sw[...]

– 6 – EMPTY STRAINER BASKETS DURING OPERATION AS NECESSARY The Strainer Baskets must be emptied periodically during operation to prevent them from over filling, which would adversely affect dishwasher operation. STOP the machine and open the access doors; Strainer Baskets are immediately inside at the front of the tanks. On Dual Rinse machines [...]

– 7 – CLEANING The dishwasher MUST be thoroughly cleaned at the end of each working shift or after each meal. Push the Power key on the keypad to turn the machine OFF. Disconnect electrical power supply(ies) and follow lockout / tagout procedures before you begin cleaning. Open all front access doors. D rain the machine by rotating the drain ha[...]

– 8 – When tanks are empty, remove pump intake screens (Fig. 22) and clean them in a sink. Remove, clean and replace the strainer(s) from drainback pans in the power rinse and / or wash section(s) where present (Fig. 23), refer to pages 11 – 14. Remove the dual rinse arms (FT900D or FT900SD only). Clean debris from metal dual rinse nozzles an[...]

– 9 – CLEANING THE TOP DUCT Disconnect electrical power supply(ies) and follow lockout / tagout procedures before you begin cleaning. Debris and airborne particles will settle on the Top Covers and the surfaces inside the Top Duct. The Top Duct should be cleaned about every two weeks, as appropriate for your location. There are two handles on e[...]

– 10 – DOs AND DON'Ts FOR YOUR NEW HOBART DISHWASHER DO assure proper water hardness of 3 grains or less per gallon. DO pre-scrap dishes thoroughly. DO use only detergents recommended by your chemical professional. DO at the end of the day, thoroughly cleanse the machine, rinse, and dry (leave doors open). DO closely follow your chemical p[...]

– 11 – CURTAINS AND DRAINBACK PANS, MODEL FT900 Curtains and drainback pans must be in their proper places, Fig. 31 . . . • Hang a short curtain on the unload side of each upper prewash, wash and power rinse arm. • Hang a long curtain on both sides of every section joint. • Hang two long cur tains at the load end. • Hang one long cur ta[...]

– 12 – CURTAINS AND DRAINBACK PANS, MODEL FT900D Curtains and drainback pans must be in their proper places, Fig. 32 . . . • Hang a short curtain at the unload side of every upper prewash, wash, power rinse and dual rinse arm. • If equipped with a blower-dryer, hang another short curtain after the final rinse arm. • Hang a long curtain on[...]

– 13 – Fig. 33 CURTAINS AND DRAINBACK PANS, MODEL FT900S Curtains and drainback pans must be in their proper places, Fig. 33 . . . • Hang a short curtain on the unload side of each upper prewash and wash arm. • Hang a long curtain on both sides of every section joint. • Hang two long cur tains at the load end. • Hang one long cur tain a[...]

– 14 – Fig. 34 CURTAINS AND DRAINBACK PANS, MODEL FT900SD Curtains and drainback pans must be in their proper places, Fig. 34 . . . • Hang a short curtain at the unload side of every upper prewash, wash and dual rinse arm. • If equipped with a blower-dryer, hang another short curtain after the final rinse arm. • Hang a long curtain on bot[...]

– 15 – MACHINE OPERATION AND PROGRAMMING SECURITY LEVELS The advanced digital controls on your dishwasher allow several setup and customization options. Because these options can affect the operation of the machine, they are all locked-out by default from the factory. To unlock them for editing, the security level must be elevated to an appropr[...]

– 16 – USER PROGRAMMING INSTRUCTIONS The dishwasher is equipped with electronic digital controls to allow greater precision for cleaning your ware, maintaining required tank temperatures and other advanced functions. Some of these functions are customized to suit the needs of your kitchen operation. All customization is performed through the on[...]

– 17 – Entering the Parameters Menu NOTE: The parameters can be changed anytime the display is active, which is when the machine is operating or in idle mode. To enter the Parameters menu to edit options: 1) Press the MENU key from the main screen. a. You will be prompted on-screen asking if you wish to exit the menu. 2) Press the UP or DOWN ke[...]

– 18 – Parameters Menu The Parameters Menu — Table 1 lists the parameter name, a short description, a list of possible values the parameter can have, the factory default value based on the specific dishwasher model and the security level required to access that parameter. PARAMETERS MENU — TABLE 1 Parameter Description Model Possible Defaul[...]

– 19 – COMMUNICATIONS SETUP MENU — TABLE 2 Parameter Description Possible Default Security Name Values Value Required NAFEM DP Baud Adjusts the baud rate of communication between the 9600 dishwasher and a NAFEM Data Protocol (NDP) Gateway to 9600 M (sold separately). This must match the setting in the NDP 38,400 Gateway. Refer to documentatio[...]

– 20 – MAINTENANCE Disconnect electrical power supply(ies) and follow lockout / tagout procedures before performing any maintenance procedure. LINE STRAINERS Line strainers used in water or steam lines should be cleaned one week after machine installation and periodically thereafter. LUBRICATION A list of acceptable lubricants, as well as the l[...]

– 21 – Conveyor Drive Chain Inspect the drive chain (Fig. 36) regularly and lubricate as required with Hykogeen Concentrate A (supplied). Conveyor Shaft Flange Bearings Located at both load and unload ends of the machine and at the front and back, these bearings should be lubricated every four months. Grease fittings at each of the four bearing[...]

– 22 – TROUBLESHOOTING Manual Reset Button on Pump Motors, Conveyor Motor and Blower-Dryer Motor In case any motor becomes overheated, the thermal overload will cause the motor to not operate. A manual reset button is provided on the junction box for each motor. To restart after the motor is allowed to cool, press the manual reset button on the[...]

– 23 – SYMPTOM POSSIBLE CAUSE NOTE : If symptom(s) persist after possible causes have been checked, contact Hobart Service. Spotting of Ware. 1. Ware not loaded properly. 2. Incorrect final rinse water temperature (minimum 180 ° F) or inadequate water pressure (15 to 25 psi is recommended). 3. Incorrect rinse aid dispensing. Contact your chemi[...]

– 24 – Fig. 42 PL-41 182-1 LINE STRAINER SYMPTOM POSSIBLE CAUSE NOTE : If symptom(s) persist after possible causes have been checked, contact Hobart Service. Tanks Not Heating. 1. Low water safety devices shut off heat. Check for proper water level. 2. Lower float(s) do not move freely. 3. Circuit breaker(s) to heat system tripped (electric hea[...]

– 25 – SYMPTOM POSSIBLE CAUSE NOTE : If symptom(s) persist after possible causes have been checked, contact Hobart Service. Display Reads Possible Resolution Door(s) Open Close all inspection doors. Unload Dishes Remove all ware from unload section of the machine, starting with the ware closest to the machine chambers. Finally remove the last w[...]

– 26 – – NOTES –[...]

– 27 – – NOTES –[...]

– 28 – DATE PREWASH TANK WASH TANK POWER RINSE TANK DUAL RINSE TANK FINAL RINSE C0MMENTS / DAY / SHIFT TIME TEMPERATURE TEMPERATURE TEMPERATURE TEMPERATURE TEMPERATURE RECORDED BY FORM 44095 (Oct. 2007)[...]