Installation Manual - Model 5 - Tundra Process Solutions Ltd.

REV A (05-01-09)INSTALLATION MANUAL – D527. An example of an asembled unit appears as follows in the field (see Figure 29).CableWeldmentTensionBarFigure 29. Assembled Field Unit with Stowed Carrier Bar28. Remove the 3/8-inch cap on the charge valve assembly and connect the charge port to anair pressure source capable of filling the pipe to 1000 psi (see Figure 30).WARNING:Cylinder gas pressure can be manually released in a non-operating stateby opening the bleeder valve on top of the actuator. Opening this valveslowly will release any load the ram may be carrying and enable the ram toreturn safely to its full down position. The valve should be open only whilerunning under normal conditions to prevent the ram from acceleratingthrough to its fully extended position when loads are disconnected.Charge valveCounterweightunitAir pressuresourceFigure 30. Pressurizing Counterweight Charge Valve29. Repressurize the counterweight unit to the pressure established based on well loadingconditions. Depending on variances in pump size and power unit requirements, unitsmay need to add or bleed off some pressure. If shipped domestically, units are initiallypressurized to 600 psi.SECTION 3 – TOOLS & SPECIAL EQUIPMENT19