Simply replace the unfilled areas such as "" and "[date]" with your information.
Dear [facilities or maintenance manager],
I would like to report the malfunction of the [name of machine with issue]. The malfunction first occurred at [time ] on [date]. We have attempted to correct the malfunction with routine troubleshooting methods, but have been unable to do so.
Currently, we are unable to [list type of work impacted by malfunction] due to the inability to use this machine. We would greatly appreciate if you would come by to look at the machine as soon as possible, or call the vendor to have the machine repaired.
Thanks in advance for your prompt attention to this matter. We appreciate any help you can provide, as this issue is affecting our productivity.