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Manual For SEWER RAT® Camera JET BUGGY
A) General: As when cleaning sewers you will find the best results by working upstream. It is possible to work downstream. Alternatively, the towing eye can be fitted to the
base plate, in front of the camera. The Jet Buggy can then be helped on its way by pulling it through the pipe with a rope or winch cable.
B) Nozzle ports: The nozzle as supplied, only has pilot holes drilled.
THESE SHOULD BE DRILLED to the appropriate size. The best method for sizing is to take available drill bits and find the one that snugly fits into your existing nozzle. That is then the size drill that should be used to drill out the pilot holes.
Please note that
the pilot holes are drilled at a 3 Degree angle. That should be followed with the appropriate size drill bit. Please inform your machinist of these requirements. They should be easy to follow.
C) 6" diameter pipes: Your Jet Buggy is normally supplied with the camera mounted for 6" operation,
There are flat washers and rubber grommets mounted between the front of the camera and the buggy to keep the camera horizontal. To properly mount the camera, place a rubber grommet sandwiched between two washers under the front of the camera. Screw the 1" 8-32 screws through these into the bottom of the camera, securely. This should be done under both front mounting holes. The rear mounting holes use the other two screws, without grommets or washers to mount the rear of the camera to the
base plate of the BUGGY.
NOTE: KEEP ONE "SEWER RAT"® SKID MOUNTED ON TOP OF THE CAMERA FOR PROTECTION.
D) 8" diameter pipes: The only modification suggested for 8" diameter pipes is to reposition the wheels. Underneath the
base plate you will see axle bolts that hold the wheels and axles in place, remove the axle bolts and pull the wheel and its axle outwards until the second hole appears in line with the hole in the
base plate. Replace the axle bolts.
E) Other diameter pipes: Special wheeled skids are available for ease in operating in larger pipes. If you have these skids, all that is necessary is to remove the wheels and the axle bolts from the
base plate and screw the base plate with camera mounted, onto these larger skids, while adjusting them to center the camera for the size pipe you are operating in. (Note on these skids the wheels are mounted with a backwards slope, and a cutaway in the skid must be at the back {nozzle end} of the skid.)
F) Spray deflector: From time to time, the jetting action causes a vacuum in the sewer which draws a fine spray on to the camera lens. To minimize this, mount the spray deflector. To fit the spray deflector, simply remove the bolt fixing the nozzle to the base of the Jet Buggy, remove the nozzle, and slide the deflector onto the nozzle ( with the small deflector, position the flat part downwards). Replace the nozzle with the deflector onto the base plate and tighten the bolt.
G) Placement within a manhole: Lower the camera into the manhole by using a rope looped over the front protruding skids and holding the hose, thereby keeping the camera level, until it has landed at the bottom, then let go of one end of the rope and remove the rope. Normally by carefully maneuvering the hose you should be able to position the camera and jet nozzle inside the invert. Careful on initial start pressure as you don't want the hose to smash the camera into the top of the pipe. A little practice will quickly help you master it.
H) Removal from a manhole: Turn water on without pressure, and wind back the hose. At the same time wind up the video cable. When water can be seen in the manhole, pull gently on the hose and cable until the camera is in the manhole, then turn off the water, and pull the camera to the surface with the hose.
Caution if this is not followed, there is a danger that the camera will be smashed against the top of the pipe due to the power of the hydraulic reel. . While the camera is made to withstand abuse, caution is advised as we are dealing with electronics, not just metal.
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