Is it normal to be stopped from doing experiments for months due to "equipment malfunctioning" during masters?
In experimental sciences, such incidents are unfortunately common.  I do a lot of work in synthetic biology, for example, and it's not unusual to have a lab run into serious equipment or materials problems that significantly delay the work of the lab.  For example, one lab I was working with had a critical machine start producing strange results and it took a couple of months, several corrupted experiments, more than one technician visit, and also a change of protocols in order to debug it.

If the lab you are in is actively working to fix the equipment issues, and it is just taking a long time, that would not be unusual.  If they are not but are just neglecting it, then that is a very bad sign and you need to talk to the people who run your program to find out what to do.

In either case, you should make arrangements, either with your advisor or with the program heads, about how to adjust expectations given the equipment problems. Equipment issues should not be your problem or delay your graduation at a Masters level (Ph.D. is a different matter).