PAT DS 350 Operator's Manual
Also see for DS 350: User manualTroubleshooting manualReplacement instructions
                                              | |
Contents
| 
Configuration Setup© PAT Revision E // SB // 09/03/02 190137_E174.4 Anti-two Block (A2B) Switch(es)All RT875CC cranes are provided with two different configurations of A2B switches.Correct use of the A2B switches must be followed to prevent material damage and seriousor even fatal accidents. The applications under which these switches are used aredescribed below:a. Main Boom A2B SwitchThe main anti-two block switch is used in all main boom applications (movements andlifts). This switch is used in conjunction with a chain and the weight around the mainhoist cable. A by-pass flag must be installed in the auxiliary boom nose A2B switch duringmain boom operation.Without the flag installed crane functions will remain locked out.b. Auxiliary Boom Nose A2B SwitchThe auxiliary anti-two block switch is used in auxiliary boom nose applications(movements and lifts). This switch is used in conjunction with a chain and the weightaround the auxiliary hoist cable. A by-pass flag must be installed in the main boom A2Bswitch during auxiliary boom nose operation.Without the flag installed crane functions will remain locked out.The anti-two block switch must be used in ALL Operations. Simultaneous two-hoist working is prohibited in all circumstances. |
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine