SAFETY AND IMPORTANT WARNING ITEMS SAFETY CIRCUITS This engine is provided with the following safety circuits to prevent engine faults from resulting in serious accidents. • Overall protection circuit • Fixing upper lamp 1 (L2), Fixing upper lamp 2 (L3), Fixing lower lamp (L4) overheating prevention circuit These safety circuits are described below to provide the service engineer with a renewed awareness of them in order to pre-vent servicing errors that may impair their functions. 1.
Overall protection circuit CBR1 NF CBR2 1.1 Protection by circuit breaker /1 (CBR1) and circuit breaker /2 (CBR2) CBR1 and CBR2 interrupt the AC line instantaneously when an excessive current flows due to a short in the ACline. CAUTION: The CBR1 and CBR2 functions must not be deactivated under any circumstances. S-11