ASQ Service Manual 2008-Reformat.indd
Contents
1. nn LS6 73 18GR _ en 7 1 75 18RD_ 76 1868 With timer in neutral amp wires 73 18GR and 76 18GR removed from LS6 does pump continue to run E wo Replace PS2 Replace LS6 7 4 7 4 RINSE AID PUMP WILL NOT OPERATE 77 18RD o DEA LS7 7848BL P 79 18WH PS3 GC 80 18RD E ek us NOTICE PERFORM THESE TESTS WITH LS7 IN DOWN POSITION Does pump operate with prime switch PS3 depressed D YES NO Is there voltage at 77 18RD on LS7 Is there voltage between 78 18BL and 79 18WH on pump Replace 157 Repair Connection YES mu NO Replace pump Repair loose connection in 78 18BL or 79 18WH 7 4 RINSE AID PUMP WILL NOT LO CM o a e 187 78 18BL 80 18RD Pss 0 With timer in neutral 8 wires 81 18BL amp 79 18BL removed from LS7 does pump continue to operate Replace PS3 Replace LS7 7 4 7 4 CHEMICAL DOES NOT FLOW Is container empty YES NO Replace container Is intake tube submerged YES NO 15 squeeze tube worn Position properly cracked or brittle YES NO Replace squeeze tube Does pump operate YES NO Inspect for air leakage Refer to in intake tube 6 14 6 16 6 18 HEATER WILL NOT SHUT OFF 82 18RD TS 83 18Y Replace thermostat TS HEATER WILL NOT OPERATE 82 18RD TS 83 18Y Os Is th2. 6 To replace lamp transformer insert a screwdriver under the locking tabs on one side of the transformer 4 and then on the opposite side Reverse steps 1 thru 5 7 To replace switch operator insert screwdriver under locking tabs at the front of the switch and pry up Do the same on the opposite side 8 Install the operator Reverse steps 1 thru 5 9 Replace contact block 5 1 Insert a small screwdriver in the slot at the rear of the contact block and separate the blocks 2 Slide the blocks forward and backward do not attempt to pry apart laterally 3 Assemble the new contact block blocks and insert the lamp holder from the front Apply sufficient force to push lamp holder into place 10 Reassemble in reverse order American Dish Service 91 3031 POWER SWITCH ASSEMBLY Figure 7 4 10 Flow indicators and chemical system contain caustic chemicals Flush system and protect eyes before performing service 7 4 11 CLEANING FLOW INDICATOR 11 See Figure 7 4 1 Remove chemical tubes from detergent and sanitizer containers and place in a container or clean water 2 Operate both pumps using the prime switches until the chemical tubes are flushed and filled with clean water If flow indicator still remains cloudy remove the silicone tubes from both ends and clean with rags and pipe cleaner 3 Reassemble 7 4 12 FLOW INDICATOR REPLACEMENT 1 Remove chemical suction tubes from chemical containers and pl
3. 7 5 REPAIR PROCEDURES INDEX DESCRIPTION REPAIR PROCEDURES CABINET ASSEMBLY 7 1 1 Carousel Adjustment 7 1 2 Height Adjustment SPRAY SYSTEM 7 2 1 Pressure Check 7 2 2 Bearing and or Spray Arm Replacement PUMP MOTOR ASSEMBLY 7 3 1 Upper Pump Housing Replacement 7 3 2 Pump Motor Replacement CONTROL SYSTEM 7 4 1 Timer Motor Replacement 7 4 2 Adjustment 7 4 3 Timer Switch Replacement 7 4 4 Motor Relay Replacement 7 4 5 Replacement of Start Winding Relay 7 4 6 Chemical Pump Replacement 7 4 7 Heater Replacement 7 4 8 Thermostat Replacement 7 4 9 Float Switch Replacement 7 4 10 Power or Cycle Start Switch Repair 7 4 11 Cleaning Flow Indicator 7 4 12 Flow Indicator Replacement FRESH WATER PLUMBING 7 5 1 Clean Replace Strainer Screen 7 5 2 Replace Shut Off Valve Packing 7 5 3 Service Solenoid Valve Diaphragm 7 5 4 Replace Solenoid Valve Coil 7 5 5 Overhaul Vacuum Breaker 7 5 6 Plumbing Removal PAGE N OD GQ G G 11 13 13 15 15 15 16 16 16 16 17 19 19 20 20 20 23 23 23 25 7 0 REPAIR PROCEDURES Repair procedures are organized around the major sub assemblies of the machine Most common procedures are included In addition to specific procedures each major sub assembly is discussed with respect to its construction and operation Before attempting any repair maintenance personnel should be thoroughly familiar with the construction and operation of the equipment and should be cer
4. 4 connection in wa and 9 18BK at molex 7 18RD position plug Is there voltage between Repair connection in 10 18WH and 14 18BL at 9 18 or 10 18WH molex plug Replace MS2 if motor Is there voltage at still fails to operate replace 14 18BL on LS3 motor pe CATS ee Repair connection Is there voltage at 14 18BL 14 18L on LS3 a Replace LS3 Is there voltage at 13 18PU on drain switch en pe ms Repair connection Is there voltage at 12 18GR on in 13 18PU drain switch DS prar gt Replace drain switch DS Repair loose connection 7 4 in 12 18GR 9 18RD 1 LS2 os 22 18RD 23 18BR 20 18BR 21 18WH PUMP WILL NOT STOP TIMER IS IN NEUTRAL POSITION Is there voltage at 20 18BR on motor relay 5 2 Does pump continue to Replace MSI operate with 19 18RD 7 4 removed from LS2 a n Replace drain Replace LS2 switch DS 7 4 7 4 MOTOR STOPS AFTER SHORT TIME Does start winding relay MS2 operate properly when tested with neon light Replace motor Replace 52 7 3 RECIRCULATING PUMP LEAKS Is leak at shaft Replace pump Replace gasket between ump and s i 7 3 pump and sump 7 3 NOISY RECIRCULATING PUMP With Upper Housing removed Spin Impeller Are bearings rough YES Replace motor Clean impeller 7 3 7 3 LOW OR UNSTEADY P
5. at C stop when red cycle start 35 18Y on timer Is float right side up Fill machine is released motor ond a SE YES NO YES NO YES I pees Replace 181 Refer to Pump Replace timer Is there voltage at With red light depressed Reverse float 7 4 Motor Will Not motor 34 18Y on R1 Run 7 4 ee ee 6 8 YES BEE YES NO oF DEREN Repair loose Is there voltage at Repair R1 Is there voltage at connection at 33 18RD on R1 7 4 26 18BL at R1 34 18Y YES NO YES NO Te Replace R1 Repairloose Repair loose connection Is there voltage at 7 4 connection at at 27 18WH 25 18BR on R2 33 18RD a Yes n gt Is there voltage at Is there voltage at 29 18BR on CS 25 18BR on float switch Yes AMT PINE a OTT Lt Eo _ 1 Is there voltage at Is there voltage at Replace float switch Re es 28 18RD on CS 28 18RD on CS 7 4 connection at m 25 18BR YVES NO Yeo um Replace contact Check for loose Replace contact Repair loose block on CS connection at block on CS connection at 7 4 28 18RD 7 4 28 18RD CYCLE WILL NOT RESUME AFTER WASH R2 24 18RD 25 18BR 4 p 1 55 8 18RD 29 18BR 26 18BL 27 18WH FL 60 18RD o 61 18PU 62 18WH FS EM e e EM s 66 18WH es tepu 2 Is there sufficient water in sump to activate float switch YES NO D
6. motor is at operating speed the starting winding is de energized by the motor start relay and the main winding continues to rotate the motor in either the forward or reverse Motor burn outs may be caused by failure of the motor start relay or a loose connection in the motor starting circuit If a motor has been replaced because of burn out it is imperative that the main and starting circuits be checked and the motor start relay replaced UPPER PUMP HOUSING REPLACEMENT See Figure 7 3 1 1 Remove hood top hood carousel and splash shields 2 Remove spray arm and scrap tray 3 Remove eight screws 1 around the top of the pump housing 2 and remove housing 4 Do not move or rotate any portions of the lower pump assembly 5 Reassemble in reverse order American Dish Service 63 0700 RECIRCULATING PUMP ASSEMBLY FRONT SUMP PANEL e E Si www uL Figure 7 3 1 7 3 2 PUMP MOTOR REPLACEMENT 1 Remove hood top hood sides splash shields spray arm and scrap tray 2 Remove motor compartment panel and floor 3 Disconnect motor from wiring harness 4 Remove eight screws attaching motor to sump bottom 5 Remove motor pump assembly 6 Remove spray arm pivot from motor assembly 7 Reassemble in reverse order making certain that the motor is oriented properly 8 Before energizing machine connect a neon test light across the two lower terminals of the motor starting relay 9 Press the Po
7. one second after the cycle start button is depressed This allows time for Cam 1 to actuate R2 the Cycle Resume Relay 3 restarts the timer motor when the water level is near its proper point Water continues to flow for several seconds and this time is adjustable to provide the exact water level required 7 4 1 7 4 2 TIMER MOTOR 4 REPLACEMENT 1 Remove two mounting screws and nuts 2 Pull motor to the left away from timer frame until stopped by the pinion 3 Slide motor up and forward so that motor shaft slides out slot in frame 4 Disconnect wires and reconnect to new motor 5 Replace motor in frame making sure that gear and pinion are meshed and that the motor is flush against the frame with the shaft bushing locked in place at the bottom of the slot CAM ADJUSTMENT See Figure 7 4 2 The timer cams which control the water solenoid valve and chemical pumps are adjustable These cams are split with a left and right side The right side of the cam sets the point at which the solenoid valve opens or the chemical pump starts The left side sets the point at which the solenoid valve closes or chemical pump stops THE RIGHT SIDE OF CAM SHOULD ALWAYS REMAIN AT FACTORY SETTING Adjustment of the left side will determine the length of time the solenoid valve is open or the chemical pump operates and thus controls the amount of water or chemical introduced into the machine Cams are adjusted using a special wrench wh
8. Connect tail piece 3 to drain Place chemical suction tubes in their proper containers RED DETERGENT GREEN SANITIZER BLUE RINSE AID START UP Perform the following start up procedures This should be done by a qualified service representative 1 Check voltage rating on name plate 4 and confirm that electrical supply is correct 2 Visually inspect machine for defects shipping damage or improper installation 3 Prime chemical pumps See Figure 2 1 2 4 Adjust chemical pump delivery in accordance with the recommendations of Section 4 0 and 7 4 3 5 Fill and operate machine Insure that water level is correct and all components work properly Water level may be checked at the clear plastic tube inside the front compartment 6 Wash several loads Insure that chemicals are metered in the appropriate quantities and that glasses are clean 7 Re check for leakage at plumbing or cabinet 8 Confer with owner to insure that he understands the operation and is satisfied with the start up 3 2 WARRANTY Record Model Serial 4 and other necessary information on Warranty Card and forward to AMERICAN DISH SERVICE 900 BLAKE STREET EDWARDSVILLE KS 66111 3820 4 0 CHEMICALS 4 1 All ADS machines require detergent and sanitizer for proper operation A rinse aid may be used if desired Selection of the proper chemicals and the correct amounts will depend on several factors Proper selection is vita
9. Effective June 2008 American Dish Service ADS MODEL ASQ GLASSWASHER 900 Blake Street SERVI CE MANUAL Edwardsville Kansas 66111 913 422 3700 IMPORTANT American Dish Service provides this information as a service to our customers Keep all instructions for future reference Although ADS will make every effort to make sure the information in this service manual is correct and up to date ADS does not certify that this is the case and should you decide to utilize this manual you do so at your own risk ADS reserves the right to alter or update this information at any time without notice Should you desire to make sure that you have the most up to date information we would direct you to the appropriate document on our website www AmericanDish com The instructions and guidelines in this owners manual are given with the assumption that the dishwasher has been installed operated and maintained properly and in accordance with all applicable Codes Ordinances and Safety requirements Failure to install operate and maintain the machine in this manner will void the ADS Warranty ADS assumes no liability or control over the installation maintenance service or operation of the equipment Product failure due to improper installation maintenance and operation is not covered under the ADS Warranty WARNING During the operation of all dishmachines chemicals high voltage electricity and normal operational functions can c
10. UMP PRESSURE N rura Does pressure fluctuate Adjust water level Are spray jets worn 7 4 Replace spray arm Clean impeller 7 3 DETERGENT PUMP WILL NOT OPERATE E Det 67 18RD Ae a s5 _ Pin 7 0 18RD _ Ps 71 18 0 18 0_ 1 7 71 180 NOTICE PERORM THESE TESTS WITH LS5 IN DOWN POSITION Does pump operate with prime switch PS1 depressed YES NO Is there voltage at 67 18RD 15 there voltage between 68 18 on LS5 and 69 18WH at pump YES NO Replace LS5 Repair loose connection 7 4 on 67 18RD YES NO Replace pump Repair connection 7 4 in 69 18WH DETERGENT PUMP WILL NOT STOP l 6748RD o ae 70 18RD PS 14808 With timer in neutral position amp wires 68 18OR and 71 18OR removed from LS5 does pump continue to operate We py 8 Replace PS1 Replace LS5 7 4 7 4 SANITIZER PUMP WILL NOT OPERATE 72 18RD 5 PS o o LS6 73 18GR NOTICE PERFORM THESE TESTS WITH LS6 IN DOWN POSITION Does pump operate with prime switch PS2 depressed YES NO Is there voltage at 72 18RD Is there voltage between 73 18GR on LS6 and 74 18WH at pump Replace LS6 Repair connection in 7 4 72 18RD YES NO Replace pump Repair loose connection 7 4 in 74 18WH or 73 18GR SANITIZER PUMP WILL NOT ius 72 18RD pe
11. UUM BREAKER Overhaul vacuum breaker 7 5 SPRAY ARM DOES NOT SPIN PROPERLY Is spray arm clean Is bearing free Clean spray arm Is water level correct Replace bearing and or spray arm 7 2 Check spray arm pressure Adjust water level 7 2 7 5 GLASSES NOT CLEAN BUT MACHINE OPERATES Is detergent supply depleted YES NO m I Replenish Does detergent flow YES NO Does spray arm rotate Does detergent pump at 40 60 RPM operate YES NO Check spray arm Refer to pressure 72 Is cam adjusted Refer to 7 2 properly 6 14 Is squeeze tube Adjust worn 7 4 3 Replace Check for air leak in suction tube EXCESSIVE FOAMING Are chemical intake tubes in proper containers Is proper detergent Repair and flush lines being used YES NO Is correct amount of detergent Use proper detergent being monitered Is proper rinse aid Adjust being used 7 4 3 YES NO Is rinse aid metered Use proper rinse aid in proper amount Look for low water Adjust temperature 7 4 3 Cycle Instant Start Switch Master Switch cs MSTR tart Winding Relay MS2 c Main Winding Relay MS1 Fill Switch tv LS1 thru LS7 FS Drain Switcl hemical Pump DS Float Switch FS Instant Start Relay U Rinse Aid Prime X PS3 Sanitizer Prime Switch PS2 Detergent Prime Switch 4 Thermostatic Switch TS 7 0 7 1 7 2 7 2 7 4
12. ace in clean water Flush the system using the prime switches 2 Remove silicone rubber tubes from both ends of the flow indicator and remove glass balls 3 Remove screws attaching indicator to door 4 Install new indicator reversing steps 1 2 and 3 7 5 0 FRESH WATER PLUMBING See Figure 7 5 Fresh water is introduced into the machine through the fresh water plumbing assembly A manual shut off valve in the front compartment closes off the system when servicing is required on other components Water flows from the shut off valve through a strainer and into the water solenoid which controls water flow into the machine A vacuum breaker provides back flow protection 7 5 1 CLEAN REPLACE STRAINER SCREEN 1 Remove strainer cap 1 Remove screen and inspect Slightly open shut off valve 2 to flush loose scale or dirt from the strainer housing If screen is clogged soak in lime remover If damaged replace Reassemble in reverse order 7 5 2 REPLACE SHUT OFF VALVE PACKING Shut off water supply upstream of machine Remove screw and lift off valve handle Using 34 inch wrench remove valve bonnet 3 Disassemble stem packing and plug Clean plug stem and bonnet using lime remover and steel wool Install new packing and reassemble in reverse order American Dish Service 65 0600 FRESH WATER ASSEMBLY Figure 7 5 092 5002 American Dish Service SOLENOID ASSEMBLY SSA Oi So Fi
13. ause harm bodily injury or worse if proper installation operation and maintenance are not observed It is imperative that the operator s are trained in the operation and made aware of the hazards that can exist This is the responsibility of the owner of this equipment When installing operating or maintaining your dishwasher you must follow all applicable safety requirements including the wearing of approved personal protective equipment TABLE OF CONTENTS 1 0 GENERAL 2 0 OPERATOR PROCEDURE 3 0 INSTALLATION 4 0 CHEMICALS 5 0 PREVENTIVE MAINTENANCE 6 0 TROUBLESHOOTING 7 0 REPAIR PROCEDURES 8 0 REPLACEMENT PARTS 1 0 GENERAL The Model ASQ Glass washing machine is intended for under counter installation in bars and restaurants The unit has a circular rack divided into three compartments This rack is indexed manually so that one compartment is at the back of the machine in the wash zone while the other two compartments are used for loading and unloading The machine uses liquid chemicals for sanitizing rinse aid and detergent During the first part of the cycle detergent is metered and the machine washes glasses It then drains and pre rinses Fresh water continues to flow into the machine until the sump is full and the recirculating pump starts for the pumped rinse Chlorine based sanitizing chemicals are introduced during the rinse When the cycle is complete the rinse water remains in the machine to serve as wash water for th
14. before making electrical repairs To use the troubleshooting charts find the chart which describes the problem best in the upper left hand corner A series of questions is asked and should be answered YES or NO This answer leads to the next question until the problem is isolated and a repair is described When the electrical control system is involved a portion of the Circuit diagram is included on the chart to assist in understanding Unless otherwise stated voltage measurements should be taken from the neutral buss MACHINE WILL NOT OPERATE GREEN POWER LIGHT IS OFF L1 INDICATOR S 18RD POWER Is fuse blown or breaker tripped YES NO Is there voltage between 1 16RD and 2 16RD at field wire box Reset or replace Is there voltage between Repair building 1 16RD and 2 16WH at electrical system master switch With switch on is Repair loose there voltage between connection 3 16RD and 4 16WH Is power lamp Replace contact block burned out on master switch 7 4 Replace lamp Repair loose connection 7 4 R2 24 18RD 25 188 5 cs siero 29 18 6 er 26 18BL 27 18WH lt R1 RI R MACHINE WILL NOT OPERATE GREEN POWER LIGHT IS ON Does R1 relay close when red button is pressed YES NO Does timer motor p Is there sufficent water to raise the float Does timer motor Is there voltage
15. e applies 1 2 Remove 45 elbow washer and gasket from inside the machine sump 4 Rotate the pipe attached to the discharge at the vacuum breaker 90 to an upward direction as shown Using a pipe wrench rotate the vacuum breaker inlet pipe and remove this portion of the plumbing from the machine Remove the elbow 5 Remove lock nut 6 on plumbing inlet Remove screw which attaches the gusset to the front sump panel Remove lower plumbing assembly from the machine Replace individual parts as required and reassemble in reverse order using teflon pipe fitting tape on all joints
16. e following load The rack is manually indexed bringing freshly washed glasses to the front compartment and taking soiled glassware into the wash compartment When the cycle start button is pressed the next cycle begins Chemicals are stored in the front compartment accessible through the main door Electrical controls are enclosed in a cabinet on this door for accessibility A small heater maintains wash temperature when there are long periods between cycles 2 0 OPERATOR PROCEDURES 2 1 DAILY START UP The following procedure should be followed at the beginning of each shift 1 Inspect spray arm screen and sump 1 for cleanliness 2 Inspect chemical containers to insure an adequate supply for the entire shift 3 Turn on power switch Green at the front of the machine 4 Depress the fill button on the side of the control cabinet until the machine begins its cycle Figure 2 1 1 5 When the machine has finished its first cycle check the water temperature 2 If it has not reached 120 49 C then press the cycle start button on the front of the machine Repeat this procedure until water is at the proper temperature 6 Load the first glasses into the left hand side of the carousel Unlatch and rotate the carousel 1 8 revolution Press the cycle start button Red 8 Subsequent loads of soiled glasses may be placed on the left hand side of the carousel and clean glasses may be removed from the ri
17. ere voltage at 84 18WH on heater YES NO Repair loose connection Is there voltage at 83 18Y in 84 18WH on heater Replace heater Is there voltage at 82 18RD on TS Replace thermostat TS Repair loose connection in 82 18RD FILL WATER WILL NOT STOP 60 18RD 154 61 18PU 62 18WH Does flow stop when master switch is turned off With 63 18RD disconnected from Service solenoid fill switch and master switch on valve diaphragm does flow stop 7 5 Replace fill switch FS Replace 4 timer switch LS4 7 4 7 4 MACHINE DOES LS4 61 18PU 62 18WH 53 18RD FS 64 18PU Y 65 18PU Is there water pressure at supply line YES Are all the Determine cause valves on and remedy YES Is inlet strainer clean Turn on valve Does manual fill FS Clean inlet strainer operate properly Wm Is there voltage at Does solenoid valve click 60 18RD on LS4 when fill button is depressed Replace LS7 Repair loose Install diaphragm With fill button depressed 7 4 connection in kit is there voltage at 63 18RD on 63 18RD 7 5 fil switch YES NO Is there voltage Repair loose connection at 64 18PU on LS4 in 63 18RD YE NO Is there voltage between Repair connection 61 18PU amp 62 18WH on at 64 18PU water solenoid Replace solenoid Repair loose connection coil at 61 18PU or 62 18WH 7 5 WATER LEAKS FROM VAC
18. ght hand side of the carousel while the machine is in operation N Sanitizer Switch Rinse Aid Switch Figure 2 1 2 2 2 DAILY MAINTENANCE At the end of his shift the operator should do the following See Figure 2 2 1 1 2 10 Drain water from the machine using the drain switch inside the door Remove the hood top 1 by lifting up approximately 1 inch and pulling forward Remove the carousel by lifting approximately 1 2 inches and pulling forward Remove the splash shields 2 on either side of the carousel pivot by pulling up at the center and sliding inward Remove the spray arm 3 by lifting it off the pivot Remove the scrap screen 4 and dispose of accumulated debris Thoroughly clean the inside of the sump and drain pan as well as all removed parts Clean the spray arm Reassemble in reverse order Refill with water Figure 3 0 3 0 INSTALLATION 3 1 Adjust height and level of the machine See Section 7 1 3 Connect the machine 1 to a separately fused 20 amp circuit using inch Sealtite All electrical work shall conform to the current edition of the National Electric Code or to applicable local codes whichever is most stringent Check building wiring for proper polarity and grounding Connect the fresh water inlet 2 to a suitable source of hot water Source must be capable of supplying 140 60 C water with a recovery rate of 50 GPH
19. gure 7 5 3 7 5 3 SERVICE SOLENOID VALVE DIAPHRAGM See Figure 7 5 3 1 Shut off water with manual valve 2 Remove screw 1 and lift off solenoid 3 Unscrew valve bonnet 2 using spanner or channel locks Insure that valve body 3 is held firmly to prevent damage to plumbing 4 Remove bonnet 2 o ring 4 and diaphragm 5 5 Clean screen 6 and valve body 6 Inspect bleeder holes 7 for plugging and diaphragm for damage 7 Reassemble in reverse order using new parts from diaphragm kit 8 Clean strainer screen 7 See Figure 7 5 7 5 4 REPLACE SOLENOID VALVE COIL See Figure 7 5 3 1 Remove screw 1 on top of solenoid coil housing 2 Remove coil and housing 3 Disassemble housing and replace coil 4 Install housing on valve body and replace screw 7 5 5 OVERHAUL VACUUM BREAKER See Figure 7 5 5 1 Remove cap by turning counter clockwise with channel locks or pipe wrench 2 Remove plunger 1 and gasket 3 Clean gasket seat plunger seat and stem using steel wool and lime remover 4 Reassemble in reverse order using new plunger and gasket American Dish Service 92 5001 VACUUM BREAKER ASSEMBLY Figure 7 5 5 7 5 6 PLUMBING REMOVAL See Figure 7 5 Most repairs on fresh water plumbing can be done without removing the plumbing assembly from the machine However when a valve or a strainer body must be replaced the plumbing must be completely disassembled and removed The following procedur
20. ich fits into notches on the side of the cam The cart shows factory cam settings The right side of adjustable cams should always be at factory setting but the left side may be changed to suit field conditions TIMER CYCLE 72 SECOND See I E MASTER g ores FI I 01 0 1 1 IL 3 L Lab Banat PI 1 3 1 1 E uh E e nam aa L Kk J 1 f I 4 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 79 80 SANITIZER ADJUSTABLE RINSE ADJUST CAM FROM LEFT SIDE ONLY DO NOT MOVE OR ADJUST RIGHT SIDE OF CAM Figure 7 4 2 7 4 3 TIMER SWITCH REPLACEMENT 1 Remove small Phillips head screw which holds the timer switch bracket to the timer frame 2 Move the switch straight to the rear away from the timer frame approximately 3 8 inch 3 Separate the switch from its bracket and attach the bracket to the replacement switch 4 Transfer wires one at a time from the old switch to the new switch 5 Replace bracket and screw 7 4 4 MOTOR RELAY REPLACEMENT 1 Remove four wires from the motor start relay 5 2 Remove two screws and nuts which attach the motor relay to the cabinet side 3 Install the new motor relay and attach wires 7 4 5 REPLACEMENT OF START WINDING RELAY 6 1 Remove the two screws which hold the relay bracket to the timer cabinet 2 Attach new relay to the cabinet 3 Remove wires one at a time from the old relay and reattach to the new re
21. l if optimum results are to be realized It may be necessary to change chemicals or adjust the quantity after the initial selection DETERGENT Detergent is used to emulsify grease and loosen soil Emulsification is a process which breaks down grease into very small particles which then mix with water The detergent also reduces surface tension of the water to dissolve soluble matter The detergent selected must be designed for low temperature dishwashing Always use established brands The proper quantity of detergent may vary over a wide range and depends on the following factors Water hardness Type and amount of grease Length of time the dishes stand Iron content of water Detergent formulation For this reason your chemical distributor should be consulted to determine the amount which will give good results with lowest detergent usage Your distributor should use the Hatch Test Kit to test water hardness before making a recommendation After the machine has been in use or if conditions change the setting can be readjusted for optimum results 4 2 SANITIZER 4 3 Sanitizer should be 6 solution of sodium hypochlorite Initial setting is 5cc and this should be checked periodically with a Chlorine Test Kit Free chlorine in the final rinse should be 50ppm or more RINSE AID Rinse aid reduces surface tension and causes the rinse water to run off in sheets rather than collect in droplets This expose
22. lay Install relay in upright position Care must be taken to insure that wires are attached to this relay properly Improper wiring will cause immediate motor burn out 7 4 6 CHEMICAL PUMP REPLACEMENT 1 Loosen the two mounting screws which attach the chemical pump to its bracket 2 Carefully remove the squeeze tube from the chemical intake and chemical discharge tubes 3 Pull the pump 7 forward out of the cabinet and disconnect wires 4 Reassemble in reverse order with the new pump 7 4 7 HEATER REPLACEMENT 1 Remove motor compartment panel 2 Remove attachment nuts and heater 8 3 Remove ceramic insulating caps and disconnect wires 4 Reassemble in reverse order 7 4 8 THERMOSTAT REPLACEMENT 1 Remove motor compartment panel 2 Remove two screws 1 which hold DELAVAL Lettering thermostat 9 to bracket 3 Disconnect wires and attach to new thermostat 4 Install new thermostat and screws 7 4 9 FLOAT SWITCH REPLACEMENT 1 Remove motor compartment panel 2 Disconnect two wires from float switch 10 3 Remove clip and float 4 Remove stem 5 Reassemble in reverse order making sure that float is installed right side up 7 4 10 POWER or CYLE START SWITCH REPAIR See Figure 7 4 10 1 Disconnect wires from all four terminals 2 Remove lens 1 from front of switch 3 Remove oollar 2 4 Remove small gasket 3 5 Remove remainder of switch assembly from the door
23. luctuates record maximum and minimum pressure 4 Normal pressure may range from 8 PSI 5600 KG M2 to 12 PSI 8400 KG M2 If pressure is less than 8 PSI 5600 KG M2 or fluctuates more than 3 PSI 2100 KG M2 refer to Section 6 11 Figure 7 2 1 7 2 2 BEARING and or SPRAY ARM REPLACEMENT 1 Remove spray arm 2 Inspect bearing for scoring or excessive wear and replace if necessary 3 Inspect spray arm hub for wear or scoring and jets for wear Normal Worn 4 Replace spray arm as required 7 3 0 PUMP MOTOR ASSEMBLY 7 3 1 The Model ASQ Glasswasher uses an integral pump and motor assembly Field repair of this unit is not recommended with the exception that the upper housing may be replaced if damaged or the gasket may be replaced if leakage occurs Any other defects normally cause extreme damage to the pump or motor windings and replacement of the entire unit is the most economical and reliable repair This unit contains a recirculating pump for spraying water over the glasses as well as drain pump which pumps soiled water from the machine The recirculating pump is activated when the motor is driven in the forward direction and drain pump is active when the motor reverses The motor has three windings The main winding energizes and provides power for the pump The forward or reverse windings are energized for approximately 12 second when the motor is first started to initiate rotation in the proper direction Once the
24. oes R2 close when Refer to 7 4 3 manual fill is depressed YES NO NES Is there voltage between 65 18PU and 69 18WH at R2 Is there voltage at 28 18RD on R2 p YES NO Replace R2 Repair connection Replace R2 Repair loose 7 4 in 28 18RD 74 connection in 7 4 69 18WH or 65 18PU MACHINE REPEATS CYCLE Does R1 energize when power switch is turned on YES NO Replace 151 Replace contact block 74 on cycle instant 7 4 start switch CS 7 4 pe t pem Poe MOTOR MSIE WILL NOT S mA suns mode t THE FOLLOWING TESTS SHOULD OPERATE Lamma DC 5 aa T BE DONE WITH LS2 IN THE UP miez T DES POSITION gaes tr las 22 1880 9 234 a 201888 ____ 21 18 7 Does pump operate when drain switch is actuated Is there voltage at Does relay 22 18RD close Voltage at 23 18BR Repair loose connection Is there voltage 15 there voltage between on LS2 in 22 18RD at 8 18Y onMS1 20 18BR and 21 18WH N on MS1 Repair loose connection Replace LS2 L EO 23 18BR s there voltage at Is there voltage Repair 7 4 9 18BK on MS1 7 18RD MS1 MNT connection in 21 19WH or 20 18BR For the following tests place a pci jumper wire across lower terminals Is th it R S of MS2 and unplug motor at molex plug 5 vre eplace MS1 Replace MS1 Repair loose Turn machine on and place LS2 in lower n 7 4 7
25. s more water surface to the air which allows the glasses to dry faster and prevents spot formation The optimum amount of rinse aid varies depending on many of the same factors that affect detergent usage Consult your chemical supplier and use nationally recognized brands 5 0 PREVENTIVE MAINTENANCE The machine should be inspected approximately once a month The following steps will prevent many costly repairs 1 Check that Operator Procedures have been followed 2 Inspect spay arm hub 1 for tightness and spray arm for free rotation See Section 7 2 0 3 Assemble machine and check for distortion of sheet metal parts ease of assembly and proper operation of carousel and latch 2 Check for proper gap between carousel and splash guards See Section 7 1 1 4 Using manual fill switch 3 check fill rate and water level 5 During the machine cycle check the following a Leakage at vacuum breaker or cabinet b Timer for proper operation Operation and flow of chemical pumps d Operation of pilot lights and Switches 6 Remove control box cover 4 and check the following a Cycle counter and drive tube b Chemical pumps and rotors lubricate if required c Squeeze tubes d Chemical intake and discharge tubes e Timer and switches f Wiring for loose connections 7 Inspect door hinges and latch TROUBLESHOOTING INDEX DESCRIPTION PAGE 6 0 TROUBLESHOOTING 2 Machine Will No
26. t Operate Green Light Off 3 Machine Will Not Operate Green Light On 4 Cycle Will Not Resume After Wash 5 Machine Repeats Cycle S Pump Motor Will Not Operate 7 Pump Will Not Stop Timer Is In Neutral 8 Motor Stops After Short Time 9 Recirculating Pump Leaks 10 Noisy Recirculating Pump 11 Low or Unsteady Pump Pressure 12 Detergent Pump Will Not Operate 19 Detergent Pump Will Not Stop 14 Sanitizer Pump Will Not Operate 19 Sanitizer Pump Will Not Stop 16 Rinse Aid Pump Will Not Operate Rinse Aid Pump Will Not Stop 18 Chemical Does Not Flow 19 Heater Will Not Shut Off 20 Heater Will Not Operate 21 Fill Water Will Not Stop 22 Machine Does Not Fill 23 Water Leaks From Vacuum Breaker 24 Spray Arm Does Not Spin Properly 25 Glasses Not Clean But Machine Operates 26 Excessive Foaming 2 DIAGRAMS Electrical Component Identification Interconnection Diagram with Chemical Alert 91 0001 Ladder Diagram with Chemical Alert 91 0002 Interconnection Diagram without Chemical Alert 91 0003 Ladder Diagram without Chemical Alert 91 9004 6 0 TROUBLESHOOTING Scope This section should be used to isolate problems if the machine malfunctions When a diagnosis has been made and confirmed refer to Section 7 0 for repair procedures CAUTION ALWAYS turn off Power Switch when removing or replacing electrical covers ALWAYS use extreme care when checking voltages ALWAYS turn off Power Switch and disconnect circuit breaker or fuses
27. tain that the diagnosis is correct Figure 7 1 7 1 0 7 1 1 CABINET ASSEMBLY See Figure 7 1 The cabinet of the Model ASQ Glasswasher is of welded stainless steel construction The lower section of the cabinet has two compartments The motor compartment houses the pump motor solenoid valve and several electrical components Except during maintenance the motor compartment panel 1 must always be in place The front compartment provides storage areas for washing sanitizing and rinse aid chemicals The control box 2 which is mounted o the door is also contained in this compartment The carousel 3 which holds the glasses is supported at the bottom on a pivot pin and at the top by a ring on the hood top Alignment of the carousel is attained by moving the lower pivot left or right On some machines shims may be used to position the pivot front to rear A latching mechanism maintains position of the carousel CAROUSEL ADJUSTMENT See Figure 7 1 1 Alignment of the carousel is critical to proper operation and sealing of the wash compartment This alignment is made at the factory but if the machine is damaged or a new hood is installed this alignment could be altered Before making any alignment changes be absolutely sure that the hood and hood top are seated firmly in place and there are no broken or protruding parts 1 Assemble the machine and check the gap above the carousel divider and below This gap sho
28. uld be approximately 1 8 inch at the top and 3 16 inch at the bottom and should be even along the entire length and the same on both sides Correct Alignment Adjust Lower Pivot To Rear Adjust Lower Pivot To Right a Adjust Lower Pivot Forward Adjust Lower Pivot To Left Figure 7 1 1 2 Adjust the lower pivot in order to attain an even gap along both sides at the top of the carousel 3 The width of the gap may now be adjusted by installing or removing spacers at the bottom of the carousel 7 1 2 HEIGHT ADJUSTMENT See Figure 7 1 2 1 Place level 1 on top of machine in both front back and side side directions to determine if machine is out of level and in which direction 2 Adjust level by turning lower portion of bullet feet 2 with an open end crescent wrench Figure 7 1 2 7 2 0 SPRAY SYSTEM 7 2 1 The Model ASQ Glasswasher spray system consists of a rotating spray arm with V type spray jets The arm rotates on a stainless steel pivot and uses the hydro static principle in which fluid is forced under pressure between the bearing surfaces The bearing therefore rides on a thin film of water The spray arm may be readily removed for daily cleaning PRESSURE CHECK See Figure 7 2 1 1 Install special pressure fitting 1 on one end of lower spray arm 2 and attach pressure gauge which reads 0 20 PSI 2 Close doors and start machine 3 Record pressure during wash portion of cycle If pressure f
29. wer On button and Cycle Start button the neon test light should go out as soon as the main motor relay is energized It will remain out for approximately 12 second and then light again If this does not occur IMMEDIATELY shut off power to the machine Check the motor starting circuits and replace the motor start relay Jest Terminals 7 4 0 CONTROL SYSTEM See Figure 7 4 The timer 1 consists of a drive motor and seven cams These cams open and close seven switches which control most functions of the machine Switch 1 LS1 controls the timer motor When the machine is off and the timer is in its neutral position no power is supplied to the timer motor When the machine cycle starts Switch 1 is activated and the timer motor drives the cams through their cycle Switch 22 LS2 supplies power to the MOTOR RELAY which powers the main motor windings Switch 3 153 activates either the forward or reverse motor start windings through the MOTOR START RELAY Switch 4 LS4 controls the Solenoid Valve which supplies fresh water to the machine Its cam is adjustable in order to control the starting point of the purge cycle and the water level Switches 5 LS5 6 LS6 and 7 LS7 control the detergent RED sanitizer GREEN and rinse aid BLUE metering pumps respectively The cams which operate these switches are also adjustable R1 the Instant Start Relay 2 supplies power to the timer and pump motors for approximately
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