A standard cooling fan is essentially a bladed DC motor. By varying the voltage input across the acceptable range for a fan, the speed of the fan will increase (to added voltage) and decrease (to reduced voltage); a faster fan means more air moved and thus a higher heat exchange rate.
Contact them toll-free from a Vodacom cellphone by dialing 111. Contact them toll-free from a Telkom phone by dialing 0800-111-234. Note: Telkom toll-free numbers are generally NOT toll-free when dialed from a MTN/Vodacom cellphone.
Below is a list of toll free 800 numbers for AT&T. Orders, Customer Care, Billing,Tech Support: 1-800-331-0500 or 611 from your wireless phone. hours: Mon.-Fri.7 a.m.-10 p.m., Sat.-Sun. 7 a.m.-10 p.m. 1  Welcome to ATT, if you are calling about phone numbers [number called from] press 1.2  Main menu to pay your bills or get other bill related options press 1, 3  for technical support or help with voice mail press 2, a.m.-10 p.m. 1  Welcome to ATT, if you are calling about phone numbers [number called from] press 1. 2  Main menu to pay your bills or get other bill related options press 1, 3  for technical support or help with voice mail press 2,