Powered plasma 60S...pulsing

[broberts5]

My pp60s pulses when I first pull the trigger. Is that normal?

[Rectified]

My pp60s pulses when I first pull the trigger. Is that normal?

How does it cut?

[broberts5]

After the initial pulses, it cuts fine.

[sticks]

High Frequency start?

[everlastsupport]

Make sure you air is dry, also what pressure are you running at? Make sure the consumables are snug (not real tight).

[performance]

The 60S unit is not HF start.
Is the arc cutting in and out or are you trying to cut and the arc is fluctuating somewhere between cutting amps and 22-27 amps? If it is the pilot arc is kicking in and out and you just don't have good contact with the work clamp or are holding a standoff too high. Did you download the manual online? What is your psi while the air is flowing?

[broberts5]

I'm running 65psi. The piece of metal has surface rust, so maybe I had poor contact.
I'll try again today on clean metal. Distance to metal was about 1/8".

[performance]

Did you read the manual?? You need 72 psi for best operation. It's listed online.

[Rectified]

I'm running 65psi. The piece of metal has surface rust, so maybe I had poor contact.
I'll try again today on clean metal. Distance to metal was about 1/8".

Where did you get the notion to regulate the pressure to 65psi? By converting the numbers given on the leaflet?

[Rectified]

I'm running 65psi. The piece of metal has surface rust, so maybe I had poor contact.
I'll try again today on clean metal. Distance to metal was about 1/8".

Best thing to do hear is listen to Mark (performance). I had some issues before, he set me straight. Read the manufacturers torch manual also. Get some 30 dollar inline desiccant dryers. If you are pulling the trigger in the air or to far away from work it will cut in cut out.

[broberts5]

All is well. Apparently just a poor ground. I cut some aluminum and it cut like butter
Air is 75psi.

[sticks]

Ironically I am having the same issue with my PP50, but only when I am at the 50 amp setting after about 10 seconds of cutting.

Air PSI is 75+, good ground, 5/8 mild steel 1/16 to 1/8 standoff. Not tripping the overload, and the problem goes away at 47 amps.

3 water separators/filters, Motorguard air filter/dryer, inlet pressure regulated at 85psi running (pressure drop from 90+ when trigger is pulled).

Not trying to hijack the thread, but it applies.

[everlastsupport]

Ironically I am having the same issue with my PP50, but only when I am at the 50 amp setting after about 10 seconds of cutting.

Air PSI is 75+, good ground, 5/8 mild steel 1/16 to 1/8 standoff. Not tripping the overload, and the problem goes away at 47 amps.

3 water separators/filters, Motorguard air filter/dryer, inlet pressure regulated at 85psi running (pressure drop from 90+ when trigger is pulled).

Not trying to hijack the thread, but it applies.

It sort of applies to this thread, but would have been better to start a new one as the PP60 and the PP50 use different torches. I run my PP50 about 65PSI and my PP60 I run at 72. Sounds like you have dry air, good flow, good ground. So I would experiment with the air pressure. Make sure consumables are good as well.