OPERATING INSTRUCTIONS The MF pump, when not ordered with the ATEX configuration, is designed to operate in environments with atmospheres that are not potentially explosive, and with filtered water (see par. 9.7). Other liquids can be used only upon formal approval by the Technical or Customer Service Departments. Water temperature The maximum permissible water temperature is 40°C. However, the pump can be used with water up to a temperature of 60°C, but only for short periods. In this case, it is best to consult the Technical or Customer Service Departments.