ParticlePositionManager has some parameters that are used to control fees, liquidation rewards and loan terms. If these params are incorrect they can cause severe problems with the contract. Therefore, when updating them, they are verified to be within certain limits. This is however not done, when initilizing the contract:
ParticlePositionManager::initialize:
Hence the contract can be setup with any values:
Consider using the setter functions already declared, update*(...), to initialize the contract parameters. That would guarantee that the initialization is done using the same validation as changing the parameters. 
