Metamec quartz pendulum wall clock keeps good time but pendulum doesn't swing

Check that the hands are tight and also that they are not touching. and jamming. Remove the battery and replace it. Some have a lever to give it a jolt to get moving.

https://www.google.com/search?q=Infinity+group+Pendulum+Wall+Clock

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If your wall clock is running but the pendulum is not swinging, it may be due to a few potential issues with the pendulum mechanism. Here are some steps you can take to repair the pendulum mechanism:

1. Check the suspension spring: The suspension spring is a thin strip of metal that hangs down from the top of the clock and holds the pendulum in place. Check to see if the suspension spring is properly attached to the clock and if it is straight. If it is bent or damaged, it may need to be replaced.
2. Check the pendulum leader: The pendulum leader is the part of the clock that connects the pendulum to the clock's movement. Make sure that the pendulum leader is properly attached to the clock and that it is not bent or damaged.
3. Check the escapement: The escapement is the part of the clock that controls the swing of the pendulum. Make sure that the escapement is properly lubricated and that it is not damaged or jammed. If it is damaged or worn, it may need to be replaced.
4. Check the beat setting: The beat setting is the adjustment that ensures that the pendulum swings evenly. Make sure that the beat setting is properly adjusted by moving the pendulum to the left or right until it swings evenly.
5. Check the weights: If your clock has weights, make sure that they are properly attached and that they are not obstructed or damaged.

If you've tried these steps and the pendulum still isn't swinging, it may be best to contact a professional clock repair technician for further assistance. They will have the expertise and tools needed to properly diagnose and repair any issues with your clock's pendulum mechanism.

It is a handsome longcase clock and rather elaborate - it would be disappointing to discover the weights and pendulum are merely decorative.

I have only encountered one similar clock and it had one battery to keep the pendulum swinging and another to power the clock. The battery had to be fairly fresh or the pendulum stopped swinging. The clock also had to be level or the pendulum stopped.

If you took the picture when the pendulum was stationary, the clock appears not to be standing vertically. It is important they stand vertically in both planes to the nth degree.
There is also a fable about a clock never being happy standing next to or hanging on an exterior wall, sometimes not such a fable...

I don't think the pendulum is the problem. I suggest you should level the clock (considering the shape of the case a plumbline would be best), fit a new battery and give the pendulum a swing - if it doesn't keep swinging, there is probably a fault with the motor.

It sounds like the drive spring might be worn. A Good clock and watch specialist will be able to overhaul and service the clock for you. It might cost you a bit more money but if it is a family clock it could be worth it.

probably find that the clock has it's own aa battery
the pendulum has it's own aa battery and the chimes have 2 aa batteries

I am unsure wha you mean by "fix the pendulum". If you mean it stopped swinging, there are two reasons: first check the battery and contacts. Remember, even a new battery can be bad, which is why new things come with warranties. The other thing is quartz movements usually don't last too long. If the pendulum is not swinging, and is correctly attached to the movement and the battery is good, then the movement has gone bad and you need a new one. Most all clock shops keep quartz movements on hand. If you are a do-it-yourself type, you can get them off the Internet. Be sure to remove the old one first and check how thick the dial is, that's how they sell them by dial thickness.

I have a clock with a pendulum and it has two batteries, one for the clock and one for the pendulum.

Perhaps your is the same?

Most grandfather/grandmother clocks have an adjustable screw on the weight to slightly extend it or shorten it to satisfy the equation of pendulum swing. the shorter the swing (arc distance) the faster the clock, the longer the swing the longer the time. Check to see if you can adjust the weight up or down on the hanger.

Yep - I know a clock repairman in California who still has some of the original Hechinger Quartz Movements for the Alessi pendulum clock . Definately worth repairing .