I posted yesterday 7/3/17 that I needed a manual for Chicago Electric 80/160 amp Welding System and got a response where to find it. I went to site and finally was able to find the manual but for some reason it was unable to open the PDF file and didn't tell me why. I've already opened others today so it's not my computer , could anyone tell me if they've had this problem and was there anything they could do about it? Thanks