CONTENTS
Page
TROUBLESHOOTING ............................................................................................................. 14
BASIC SERVICE ....................................................................................................................... 16
Electrical Service................................................................................................................. 16
Fuses .......................................................................................................................... 17
Motor Overloads ........................................................................................................... 17
Solid State Control Board ............................................................................................. 18
Low Water Tank Heat Protection.................................................................................. 20
Heater Element Wiring ................................................................................................. 21
Motor Connections........................................................................................................ 22
Mechanical Service ............................................................................................................. 23
Pump Seal Replacement ............................................................................................... 23
REPLACEMENT PARTS LIST................................................................................................. 25
ELECTRICAL SCHEMATICS ................................................................................................. 65
LIST OF FIGURES
Figure 1 — D-HB 3/4" NPT Water Supply Connection ...................................................... 5
Figure 2 — D-H1/ D-LF 3/4" NPT Water Supply Connection............................................ 5
Figure 3 — Chemical Connection Points............................................................................. 7
Figure 4 — Wash Tank Detergent Equipment Insertion Points .......................................... 7
Figure 5 — Rinse Aid Injection Point (D-HB, D-H1 Only) ................................................ 8
Figure 6 — Rinse Aid/Sanitizer Injection Points (D-LF) .................................................... 9
Figure 7 — Operator Controls.............................................................................................. 10
Figure 8 — Door Activated Drain Lever Assembly............................................................. 10
Figure 9 — Fuses.................................................................................................................. 17
Figure 10 — Motor Overload................................................................................................. 17
Figure 11 — Solid State Control Board ................................................................................. 19
Figure 12 — Float Switch ...................................................................................................... 20
Figure 13 — Float Switch Troubleshooting Chart................................................................. 20
Figure 14 — Pump Motor Wiring Diagrams ......................................................................... 22
Figure 15 — Pump Seal Replacement ................................................................................... 23
Figure 16 — Doors, Panels and Gauges................................................................................. 26
Figure 17 — Door Guides, Stops, and Lift Bracket............................................................... 28
Figure 18 — Door Handle and Spring Assembly ................................................................. 30
Figure 19A — Straight Track Assembly................................................................................... 32
Figure 19B — Corner Track Assembly .................................................................................... 32
Figure 20 — Wash/Rinse Spray Piping.................................................................................. 34
Figure 21 — Wash/Rinse Spray Arms .................................................................................. 36
Figure 22 — Drain Assembly and Scrap Screens.................................................................. 38
Figure 23 — Wash Tank Heat, Thermostats, and Float Switch............................................. 40
Figure 24 — Electric Booster and Thermostat (D-HB Only) ................................................ 42
Figure 25 — D-HB Lower Fill Piping Assembly................................................................... 44
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CONTENTS