Dean D20 series Service & Parts Manual

Also see for D20 Series: Installation & operation manual Installation and operation manual Installation & operation manual

DECATHLON SERIES GAS FRYERSCHAPTER 1: SERVICE PROCEDURES1-301.8 Troubleshooting and Problem IsolationThis section is intended to provide technicians with a general knowledge of the broad problemcategories associated with this equipment, and the probable causes of each. With this knowledge, thetechnician should be able to isolate and correct any problem encountered.Problems you are likely to encounter can be grouped into seven broad categories:1. Ignition failures2. Improper burner functioning3. Improper temperature control4. Computer-related problems5. Filtration problems6. Leakage7. Basket lift malfunctions.The probable causes of each category are discussed in the following sections. Troubleshootingguides are included in Section 1.9 to assist in identifying some of the more common problems.1.8.1 Ignition FailuresIgnition failure occurs when the ignition module fails to sense a flame within the 60-second timedelay period and locks out. Turn the fryer off, locate and fix the problem, then turn fryer back on toclear the module lock.There are three primary reasons for ignition failure, listed in order of probability:1. Problems related to the gas and/or electrical power supplies.2. Problems related to the electronic circuits.3. Problems related to the gas valve.Problems Related to the Gas and/or Electrical Power SuppliesThe main indicators of this are that an entire battery of fryers fails to light. Verify that the quickdisconnect hose is properly connected, the fryer is connected to power, the main gas supply valve isopen, and the circuit breaker for the fryer electrical supply is not tripped. Some fryers are equippedwith a fryer reset-switch that must be reset each time the fryer is turned off.