COMPONENTS AND FUNCTIONALITY ESSE-N / A.S. 1
Common Circulation Pumps DIVA ZM+DGN 2 suppliers (FHP - Sole) fully interchangeable same performances versions: with / without tachymetric generator with / without stub for top shower connection fixation with soft rubber parts ( cannelloni ) no alternate washing at present stage FHP SOLE ESSE-N / A.S. 2
Key Improvements on Circulation Pump newly designed sealing type better rinsing improved dry running characteristic changed direction of rotation improved ventilation hence less noise easy assembly cannelloni fixation simple hydraulic 100% pre-tested on supplier side ESSE-N / A.S. 3
Combined ZM Pump (Mono Motor) DIVA Pump ZM mono motor with double left and right turning hydraulics DIVA pump with simple circulation impeller ESSE-N / A.S. 4
Circulation Pump driven by single phase induction motor with auxiliary winding (capacitor 3 µf) absorbed power: 50 W on models with tachymetric generator variable speed from 1600 to 2800 rpm for pulse wash (phase control) winding resistances: main winding 45-55 Ω auxiliary winding 110-140 Ω tachymetric generator 220 Ω approx. ESSE-N / A.S. 5
Part Numbers for Circulation Pumps 111 57 53-00 FHP85, with tacho, with top shower 111 57 53-10 FHP85, with tacho, w/o top shower 111 57 54-00 FHP85, w/o tacho, with top shower 111 57 54-10 FHP85, w/o tacho, w/o top shower 111 57 87-00 SOLE98, with tacho, with top shower 111 57 87-10 SOLE98, with tacho, w/o top shower 111 57 88-00 SOLE98, w/o tacho, with top shower 111 57 88-10 SOLE98, w/o tacho, w/o top shower 111 57 75-00 FHP85, with tacho, with top shower, 60 Hz ESSE-N / A.S. 6
Pulse wash with random function * variable speed is 1600 rpm for all models so far ESSE-N / A.S. 7
Pulse wash with random function Random pulse length to make sure that low speed phases will not always occur in the same spot Pulse 1: 0.9-1.2 sec at 2800 rpm 4.5-6.0 sec at 1600 rpm Pulse 2: 0.6-0.9 sec at 2800 rpm 3.0-4.5 sec at 1600 rpm Pulse 3: 0.3-0.6 sec at 2800 rpm 1.5-3.0 sec at 1600 rpm ESSE-N / A.S. 8
driven by synchronous motor power: 26 W max. flow rate: 15 litres per min Drain Pump ESSE-N / A.S. 9
Key Improvements on Drain Pump DGN und ZM re-designed pump housing bleed duct with ball valve, integrated into sump better defined postion of outlet duct ZM separate drain pump (NO mono motor) commonality with DGN ESSE-N / A.S. 10
Drain Pump Hydraulic Design Modifications on first design proposal Backflow valve to outlet side and outlet enlarged by 5mm Pump fixation modified on upper side, to guarantee necessary stability. Pump fixation modified on lower side, to get more space for hose and clamps Bigger pump inlet with small ribs on the surface,to improve tight fixation of the hose. Bleeding pipe in sump with ball ESSE-N / A.S. 11
Bleed Duct with Ball Valve Litre/min No bleeding Filter Back to No bleeding With bleeding Water level Solution: Ball valve to close by-pass time Drain pump ESSE-N / A.S. 12
Flow Heater («Interheater») absorbed power: 2100 W cold resistance: 25 Ω self-resetting temperature limiter: 98 ± 5 C thermal fuse: 206 C (heater must be replaced if fuse broken) ESSE-N / A.S. 13
Detergent & Rinse Aid Dispenser Rinse aid window Rinse aid dosage, 2-7 ml Rinse aid, max. level, 140 ml Coil resistance: approx. 1300 Ω Rinse aid outlet Detergent, main wash, 20-30 ml Detergent, prewash, 10 ml ESSE-N / A.S. 14
Rinse Aid Dispenser Functionality Coil on off Before 1st activation of the coil, Rinse aid in dosage chamber 1 Time 1 Step 1 2 3 ESSE-N / A.S. 15
Rinse Aid Dispenser Functionality Coil on off 1st activation of coil, Rinse aid in dosage chamber 2 Time 1 Step 2 2 3 ESSE-N / A.S. 16
Rinse Aid Dispenser Functionality Coil on off After 1st activation of the coil, Rinse aid in dosage chamber 3 Time 1 Step 3 2 3 ESSE-N / A.S. 17
Rinse Aid Dispenser Functionality Coil on off 2nd activation of the coil, Dosage of min. 85% of target rinse aid volume Time 1 Step 4 2 3 min.85% ESSE-N / A.S. 18
Rinse Aid Dispenser Functionality Coil on off Remaining max. 15% of rinse aid flow from chamber 2 to 3 Time 1 Step 5 2 3 ESSE-N / A.S. 19
Rinse Aid Dispenser Functionality Coil on off 3rd activation of the coil, Dosage of max. 15% of target rinse aid volume Time 1 Step 6 2 3 dose the rest ESSE-N / A.S. 20
Rinse Aid Dispenser Functionality Coil on off Dosage completed, small "dead" volume remaining in chamber 1-3. Emptied towards container, when opening the door. Time 1 Step 7 2 3 ESSE-N / A.S. 21
Rinse Aid Dispenser Functionality Coil on Door Opened off Door opended after first activation of coil, all chambers emptied to container, door closed, rinse aid in dosage chamber 1 1 Time Step 1 2 3 ESSE-N / A.S. 22
Rinse Aid Dispenser Functionality Coil on Door Opened off 2nd activation of coil, Rinse aid in dosage chamber 2 Time 1 Step 2 2 3 ESSE-N / A.S. 23
Rinse Aid Dispenser Functionality Coil on Door Opened off After 2nd activation of the coil, Rinse aid in dosage chamber 3 Time 1 Step 3 2 3 ESSE-N / A.S. 24
Rinse Aid Dispenser Functionality Coil on Door Opened off 3rd activation of the coil, Dosage of min. 85% of target rinse aid volume Time Step 4 1 2 3 min.85% ESSE-N / A.S. 25
Rinse Aid Dispenser Functionality Coil on Door Opened off After 3rd activation of the coil, max.15% of target volume + "dead" volume remaining in chamber 1-3. Emptied towards container, when opening the door. Time Step 5 1 2 3 ESSE-N / A.S. 26
Interference Suppression Filter Connected across mains supply filters high-frequency disturbances causes capacitive leak current now integrated into dishwasher base ESSE-N / A.S. 27
Turbidity Sensor (now with integrated NTC) Turbidity sensor NTC input voltage 6-11,4 V calibrated in clear water (during last rinse), to obtain 4,3 V output voltage ESSE-N / A.S. 28
NTC Temperature Sensor ESSE-N / A.S. 29
Pressure Switch DGN single pressure switch for wash level control N/O contact (empty tub) switching point: 65 mm water column reset point: 45 mm water column ESSE-N / A.S. 30
Pressure Switch Support ZM Integrated support for both pressure switches two fully independent circuits (level control & safety control) complete assembly with hoses tested 100% on supplier side ESSE-N / A.S. 31
Air Traps in Sump - two independent air traps (level control & safety control) - both are integrated in the sump - both with water stop balls in stainless steel (to close the connections when appliance is tilted) Connection to safety pressure switch Connection to level pressure switch Water stop balls Safety air trap Level air trap ESSE-N / A.S. 32
Functions Integrated into Sump Lower sprayarm Water leveling Drain bleeding stop Outlet to drain pump Outlet to circulation pump Ball switch backflow Water inlet Thermostat Turbidity sensor NTC ESSE-N / A.S. 33
Key Improvements on Sump carry over from DGN, geometry adapted to DIVA improved drain function with ball valve in bleed duct temperature sensing on same postion electronic (NTC, in some cases combined with turbidity sensor) mech. timer (thermostat) no more IWMS (in ZM) completely pre-tested component ESSE-N / A.S. 34
Regeneration Tanks DGN big tank with condensation chamber ZM big tank with condensation chamber DGN small tank ZM small tank ESSE-N / A.S. 35
Hydraulic Circuit DGN Big Regeneration Tank ESSE-N / A.S. 36
Hydraulic Circuit DGN Small Regeneration Tank ESSE-N / A.S. 37
Water Fill 1 st phase: static to switching point of pressure switch; timeout 1-2 min. 2 nd phase: dynamic, i.e. with circulation pump running with speed profile overleaf timeout 4 min. max. pump speed for dynamic fill (and hence water load) depends on wash profile ESSE-N / A.S. 38
Water Fill ESSE-N / A.S. 39
Fresh Water Blending slight increase of water hardness to minimize glass corrosion DGN ZM blending switch in position: 0 (DGN) 1 (ZM) low to medium hardness (up to 25-30 dh / 45-50 th ) airgaps (no backflow) fresh water fresh water required according EN50084 (airgaps / no backflow) regenerating water mix of: 85% softened water 15% fresh (tap) water factory setting 85% water intake into the container 15% water intake direct into the container regenerating valve 0 1 water supply softening water saltcontainer brine intake valve ion exchanger softener ESSE-N / A.S. no return valve 40
Fresh Water Blending slight increase of water hardness to minimize glass corrosion blending switch in position: 1 (DGN) 2 (ZM) airgaps (no backflow) high water hardness (above 25-30 dh / 45-50 th ) 100% softened water 0 1 water supply fresh water fresh water required according EN50084 (airgaps / no backflow) regenerating water softening water brine 100% water intake into the container saltcontainer regenerating valve intake valve ion exchanger softener ESSE-N / A.S. no return valve 41
Fresh Water Blending slight increase of water hardness to minimize glass corrosion Position 0 / 1 0 1 low to medium hardness (up to 25-30 dh / 45-50 th ) factory setting 25 dh 15% 85% softener 25 dh 1 dh 5 dh Position 1 / 2 0 1 high water hardness (above 25-30 dh / 45-50 th ) 50 dh 100% softener 4 dh Target water hardness 3 to 5 dh / 5 to 9 th ESSE-N / A.S. 42
Fresh Water Blending slight increase of water hardness to minimize glass corrosion CT models: mechanical setting of regeneration level in 4 steps DGN) or 5 steps (ZM). Levels 1 and 2 always with fresh water blending. 2 separate adjustments on electronic models: electronic setting of regeneration level, by pushbutton combinations on user interface; 5 or 10 levels, depending on type mechanical setting of fresh water blending (see previous slides) ESSE-N / A.S. 43
Fresh Water Blending slight increase of water hardness to minimize glass corrosion Small Water Tank Position 1 Position 2 Position 3/4 Hard water Soft water 20% blended hard water Hard water Soft water 10% blended hard water Blending of hard water - Reduced Glas corrosion Hard water Soft water No blending ESSE-N / A.S. 44
Regeneration On CT models: regeneration at end of each cycle, variable water volume depending on local water hardness On electronic models: constant volume, variable freqency of regeneration depending on local water hardness N.B.: resin wash sequence after regeneration (a number of drain steps alternating with simultaneous drain & fill) was sometimes misunterstood by customers and service engineers (electronics were exchanged!) ESSE-N / A.S. 45
Key Improvements on Softener simple traditional design (in ZM) carry over DGN no more IWMS resin and salt in one container bajonett instead of screwed salt cap (ZM) improved salt indication floater precise surface of salt fill-in (tool deviation line) ESSE-N / A.S. 46
Old salt tank new softener (ZM) Salt tank integrated in base Single component with direct connections to tank ESSE-N / A.S. 47
Improved Salt Floater before modification salt container friction after modification salt container tool modification (added ribs) floater reed floater welding line welding line reed deformation during welding tool modified & welding process adapted ESSE-N / A.S. 48
Key Improvements on Water Safety System General strategy pressure switch direct level control in sump supervision of inlet valve by time / software control plant specific variants in DGN always additional floater in base in ZM always additional pressure switch with safety level safety inlet hose always valve at tap Options Pressureless inlet hose in non-operational condition in ZM additional floater ESSE-N / A.S. 49
Water Safety System 2 water safety functions: 1. Overflow protection (always present): DGN: float switch in base ZM: safety pressure switch connected to sump 2. Safety hose (optional): ZM and DGN: with safety hose, inlet valve is always at water tap ESSE-N / A.S. 50
Water Safety Obsolete Systems ZM overflow protection: overflow air trap in IWMS, connected to pneumatic valve (in series with inlet valve) ZM safety hose: outer hose connected to mechanical inlet protection valve ( sponge ) DGN safety hose: inlet valve in dishwasher, outer hose connected to overflow chamber in water tank ESSE-N / A.S. 51
Old Water Safety System ZM Standard hose Safety hose protection valve (mechanical) standard hose (always under pressure) double hose (always under pressure) anti-overflow valve electric valve anti-overflow valve electric valve screwed joint outside DW (not protected) screwed joint outside DW (not protected) ESSE-N / A.S. 52
New Water Safety System ZM Max. safety level Inlet valve Water tank Safety pressure switch Level pressure switch 1. Inlet valve at the tap 2. Double inlet hose, outer hose with free outlet to base 3. Pressure switch for working level Second pressure switch with separate air trap for overflow level, activating the drain pump. 4. Floating switch in the base, deactivating the inlet valve activation of drain pump by the electronic time control when machine is running. 5. Overflow protection by software functions (electr. timers), filling time limitation (mech.timers) Drain pump Salt Softener Resin Antiflooding floater ESSE-N / A.S. 53
New Water Safety System ZM Standard hose Safety hose Inlet valve (electrical) Standard hose (always under pressure) Inlet valve (electrical) double hose (under pressure only during filling) Fixation flange electrical connection ESSE-N / A.S. 54
Water Safety System DGN with safety hose with standard hose ESSE-N / A.S. 55
Water Safety System DGN DGN old Solenoid valve in DW Outer hose connected to tank DIVA Solenoid valve in DW Outer hose with free outlet to base inlet Valve inlet safety safety Valve ESSE-N / A.S. 56
Water Safety DGN NOW: inlet valve at tap, outer hose open to bottom tray ESSE-N / A.S. 57
Water Safety System DGN Max. safety level E Tank 1. Inlet valve at the tap 2. Double inlet hose, outer hose with free outlet to base 3. Pressure switch for working level to tub 4. Floating switch in the base, deactivating the inlet valve activation of drain pump by the electronic control when machine is running. 5. Overflow protection by software functions (electr. timers), filling time limitation (mech.timers) From tap From outer hose to tub to bottom tray from softener to softener Work level P Circ. pump. Drain pump Floater Bottom tray ESSE-N / A.S. 58
Water tank: differences ZM-DGN DGN ZM overflow protection DGN water inlet regeneriation hard water water inlet from / to sump overflow into bottom tray hard water regeneriation water blending softened water overflow protection ZM with 2 nd press. sw. ESSE-N / A.S. 59
Drying Systems Residual drying: passive drying by residual heat in the dishes flow heater used exclusively in DIVA platform, hence external heat supply (like from visible heating element) is not possible Active drying: natural convection of hot humid air from cavity towards dishwasher base through hose. Active condensation in hose. Water collected in base pocket, where it evaporates. Turbo drying: fan transports hot humid air from cavity through big regeneration tank, where vapours condensate and are drained. 1 litre of cold water is filled in drain phase (Attention: this fill step is felt unusual by some customers and may cause soft calls!) ESSE-N / A.S. 60
Comparison of Drying Methods Turbo Drying Active Drying ESSE-N / A.S. 61
Natural convection of hot humid air from cavity through hose Active condensation in hose Active Drying Water collected in base pocket, where it evaporates If pocket full: hose closed by water air flow stops ESSE-N / A.S. 62
Turbo Drying ESSE-N / A.S. 63
EDW1001/1003 Circuit diagram (generic) ESSE-N / A.S. 64
EDW1500/1503 Circuit diagram (generic) ESSE-N / A.S. 65
EDW2000 Circuit diagram (generic) ESSE-N / A.S. 66
Common Timer Circuit Diagram ZM ESSE-N / A.S. 67
Common Timer Chart ZM ESSE-N // A.S. 68 November Novembe 2002 A.S. r 2002
Common Timer Functional Chart ZM 1/2 ESSE-N / A.S. 69
Common Timer Functional Chart ZM 2/2 ESSE-N / A.S. 70