Manitowoc QF0400 Service Manual

Also see for QC0700: Installation, use & care manual Service manual Building instructions Technician's handbook

Contents

Manitowoc QF0400 Service Manual Manual pdf 54 page image

Troubleshooting Section 55-2 Part No. 80-1214-3Safeguard FeatureIn addition to standard safety controls, your Manitowoc ice machine features built-in SafeGuards. The ice machine willstop when conditions arise that would cause major component failure.RESET PROCEDURE1. Move the ICE/OFF/CLEAN toggle switch to OFF andthen back to ICE.A. If a safeguard feature has stopped the icemachine, it will restart after a short delay.Proceed to step 2.B. If the ice machine does not restart, see “IceMachine Does Not Operate” on previous page.2. Allow the ice machine to run to determine if thecondition is reoccurring.A. If the ice machine continues to run, the conditionhas corrected itself. Allow the ice machine tocontinue running.B. If the ice machine stops again, the condition hasreoccurred.SafeGuards• No Water• Gear Motor Speed is Incorrect• QF400/QC700/QF800 Only - Discharge linetemperature is too high or low during the freezecycle.• QF2200 Only - Liquid line temperature is too high orlow during the freeze cycle.STANDBY MODEThe first time a failure occurs, the ice machine de-energizes and initiates a Standby Mode. The icemachine will remain off for 60 minutes, thenautomatically restart to see if the problem reoccurs.During the Standby Mode the corresponding lightflashes continuously (disch temp, water level or speed).If the same failure keeps occurring, the ice machine willinitiate a SafeGuard Mode and remain off until manuallyrestarted.SAFEGUARD INDICATOR LIGHTSDuring a SafeGuard Mode the corresponding light (dischtemp, water level or speed) will flash continuously.The SafeGuard will remain in memory for 48 hours of icemaking time. After 48 hours of ice making time theSafeGuard will automatically be erased. If power isinterrupted during the 48 hours, the timing will resumewhen power is applied to the ice machine.Placing the toggle switch in the OFF position:The corresponding light will flash continuously.Placing the toggle switch in the ICE position:The light will de-energize and a start-up sequence willinitiate.The corresponding light will flash anytime the toggleswitch is placed in the OFF position provided48 hours of ice making time has not been exceeded.Revised 8/2003Downloaded from www.Manualslib.com manuals search engine