The EZE BEND SYSTEM employs Enerpac hydraulic pumps. Internationally recognized as the leader in hydraulic power systems, service centers are located throughout the United States. Service centers can be located by accessing Enerpac’s web site, www.enerpac.com. Please read and retain the Enerpac operator’s manual. Use only EZE BEND or Enerpac Hydraulic Oil. DO NOT install other oil products as they may cause system failure and void the warranty. Keep oil level full. Replace oil every 3 - 6 months. The .5 horsepower pump (27 lbs) is standard for use with the #6 Power Heads. The 1.7 horsepower pump (63 lbs.) is required for use with the #8 Power Heads. These pumps are designed to ‘dump’ the hydraulic fluid immediately back into the tank. They do not ‘hold’. They also employ universal motor designs. As such, they draw low amperage (9.25 or 25) and operate sufficiently from most generators. For SAFETY, the power supply is stepped down at the pump, placing only 24-volts in the operator’s hand. DO NOT ATTEMPT ANY ADJUSTMENTS ON THE HYDRAULIC PUMP, INCLUDING THE RELIEF VALVE. In extreme heat or extremely heavy and repetitive use, the pump may protect itself by shutting down. Unplug the pump and allow it to sit for 10 minutes. You may also move the pump in to some shade, place a fan directly on to the pump, or other suggestions that may keep it cool. The Enerpac Pump Manual for the 8-Pump (Enerpac ZU-4) describes many operating options. As many of these options are not necessary for the safe operation of the EZE BEND SYSTEM, they are not included on your pump. By excluding these features, you have realized a dramatic cost savings on your #8 system.