Part No. MAN, Rev. EH. Wachs 11. After dumping or moving the spoils tank, allow sufficient time to recharge the trailer battery before turning off the engine. Refer to Starting and Running the Engine (page 49) fora more detailed explanation of recharge times. Unclogging the Vacuum Check the filter whenever the vacuum system becomes clogged. Reduced suction caused by a partially clogged filter can cause the hose to clog. Clean the filter if neces- sary. If the system loses suction and the tank is not full, there is either a clog in the wand or hose, or the filter is plugged. If the suction stops suddenly, a clog is the most likely cause. A gradual decrease of suction is generally caused by a plugged filter. Use the following procedure to clear the clog. Instructions for cleaning the filter are in Chapter With the vacuum running, turn the Vacuum Break lever to the CLOSED position, then return it to the OPEN position. This may dislodge the clog. Figure 5-30. Turn the Vacuum Break lever to the CLOSED position. 2. Repeat opening and closing the Vacuum Break lever once or twice to see if the clog dislodges. NOTE
Chapter 5, Operating Instructions Vacuum System Operation E.H. Wachs Part No. MAN, Rev. 1-0809 67 If using the Vacuum Break lever does not dislodge the clog, return the lever to the OPEN position. Turn the Vacuum/Pressure Washer switch to the OFF position to turnoff the vacuum. Figure 5-31. Turn the Vacuum/Pressure Washer switch OFF to turnoff the vacuum. 4. Remove the wand from the hose and look through it to check for an obstruction. If it is blocked, use a rod or similar tool in the connector end of the wand to push out the obstruction. 5. If the wand is not clogged, remove the hose from the inlet port and check it. Try using the pressure washer from the tank end of the hose to spray out the clog, or use along rod or similar tool to push the clog out of the hose. 6. After the clog has been removed, reconnect the wand to the hose. Spray water into the tank end of the hose to ensure that the wand is functioning properly. 7. Reconnect the hose to the inlet port on the tank.