Frymaster FOOTPRINT H50 - Manual (Page 4)

PRO H50/55-SERIES GAS FRYERS
TABLE OF CONTENTS
i
CHAPTER 1: Service Procedures
1.1 Functional Description .................................................................................................................................. 1-1
1.1.1 The Electronic Ignition System ................................................................................................... 1-1
1.1.2 Interface Board ............................................................................................................................ 1-2
1.1.3 Thermostats ................................................................................................................................. 1-4
1.2 Accessing Fryers for Servicing ..................................................................................................................... 1-4
1.3 Cleaning the Gas Valve Vent Tube ............................................................................................................... 1-5
1.4 Checking the Burner Manifold Gas Pressure ................................................................................................ 1-5
1.5 Measuring Flame Current.............................................................................................................................. 1-7
1.6 Replacing Fryer Components........................................................................................................................ 1-7
1.6.1 Replacing the Controller or the Controller Wiring Harness ........................................................ 1-7
1.6.2 Replacing the Temperature Probe or High-Limit Thermostat..................................................... 1-8
1.6.3 Replacing the Interface Board ..................................................................................................... 1-9
1.6.4 Replacing an Ignition Module ..................................................................................................... 1-9
1.6.5 Replacing an Ignitor Assembly ................................................................................................. 1-10
1.6.6 Replacing or Cleaning a Combustion Air Blower ..................................................................... 1-10
1.6.7 Replacing a Gas Valve .............................................................................................................. 1-13
1.6.8 Replacing a Burner Assembly ................................................................................................... 1-14
1.6.9 Replacing the Filter Motor, Filter Pump, or Filter Pump Solenoid Valve................................. 1-15
1.6.10 Replacing the Frypot ................................................................................................................. 1-16
1.6.11 Replacing Frypot Insulation and/or Upper Burner Rails ........................................................... 1-18
1.7 Troubleshooting and Problem Isolation ...................................................................................................... 1-23
1.7.1 Ignition Failure .......................................................................................................................... 1-23
1.7.2 Improper Burner Function......................................................................................................... 1-24
1.7.3 Improper Temperature Control.................................................................................................. 1-26
1.7.4 Computer Malfunctions............................................................................................................. 1-26
1.7.5 Filtration Malfunctions.............................................................................................................. 1-27
1.7.6 Leakage ..................................................................................................................................... 1-29
1.7.7 Basket Lift Malfunctions........................................................................................................... 1-29
1.7.8 Interpretation of Digital Controller Lights ................................................................................ 1-31
1.8 Troubleshooting Guides .............................................................................................................................. 1-31
1.8.1
Troubleshooting the 24 VAC Circuit ........................................................................................ 1-31
1.8.2 Troubleshooting the Gas Valve ................................................................................................. 1-35
1.8.3 Troubleshooting the Temperature Probe ................................................................................... 1-35
1.8.4 Probe Resistance Chart.............................................................................................................. 1-36
1.9 Simplified Wiring Diagrams ....................................................................................................................... 1-37
1.9.1 Full-Vat Dual-Spark Module Wiring Diagram.......................................................................... 1-37
1.9.2 Full-Vat Single-Spark Module Wiring Diagram (Australia & Pacific Rim) ............................. 1-38
1.9.3 Dual-Vat Dual-Spark Module Wiring Diagram ........................................................................ 1-39
1.10 Principal Wiring Connections ..................................................................................................................... 1-40
1.11 Wiring Diagrams ......................................................................................................................................... 1-41
1.11.1 Pro H50/55-Series Fryer, Multi-vat........................................................................................... 1-41
1.11.2 Pro H50/55-Series Fryer, Single, Full-vat ................................................................................. 1-42
1.11.3 Pro H50/55-Series Fryer, Single, Dual-vat................................................................................ 1-43
1.11.4 Pro H50/55-Series Fryer, Single, CE......................................................................................... 1-44
1.11.5 Pro H50/55-Series Fryer, Single, FAST-ready.......................................................................... 1-45
1.11.6 Transformer/Filter Boxes .......................................................................................................... 1-46
1.11.6.1 MPH150/155 Transformer/Filter Box ....................................................................................... 1-46
1.11.6.2 FPH150/155 Transformer/Filter Box ........................................................................................ 1-46
1.11.6.3 FPPH250/255/450/455 Transformer/Filter Box ........................................................................ 1-47