Issue: 16.08.2010
Instruction Manual DVZ-SKA “BIOMASTER“-PLUS
Page 22 of 39
through the Disinfwecting tank vent. Refer to Section „EXCESSIVE BACK
PRESSURE IN TREATMENT TANK“.
9.4 ODOR IN OTHER SPACES
1. Make sure ventilation air inlets are not picking up discharge from the Treatment Tank.
If so, relocate vent termination.
2. If odor is coming from fixtures and air is bubbling up through the fixtures, there is
excessive back pressures in the Treatment Tank which is blowing out the influent trap
water seal and allowing the Treatment Tank to vent into the space through the
shallow fixture traps. Refer to section „EXCESSIVE BACK PRESSURE IN
TREATMENT TANK“.
3. Check for leaks in the Treatment Tank vent pipe.
9.5 POOR DRAINAGE (TOILETS DO NOT FLUSH PROPERLY)
1. Check the inlet trap, trap vent, and Treatment Tank vent for blockage.
2. Open the inspection hatch and check for excessive foam in the Treatment Tanks.
3. If the Treatment Tanks vent is blocked, it may be cleared with a stream of high
pressure water.
4. If the blockage cannot be found quickly, by-pass the unit so that you may have
sanitary facilities.
9.6 FOAM FROM TREATMENT TANK VENT
Make sure, a detergent with low foaming properties is used on board for cleaning
sanitary spaces. Instruct the personal
NOT
to empty buckets in drains that lead to the
treatment plant after cleaning
9.7 EXCESSIVE BACK PRESSURE IN TREATMENT TANK
1. Make sure that the Treatment Tanks vent is the size specified in the installation
instruction or larger throughout its entire length. The flame screen (if used) at the vent
termination must be at least two full pipe sizes larger than the vent pipe and free from
blockage. If not, skip to step 5 below.
2. Make sure that all horizontal portions of the Treatment Tank vent are sloped upward
and away from the Treatment Tank at least 1/2 inch per foot. If the run is aftward ship,
make sure that the slope is greater than the list of the vessel. Otherwise,
condensation will fill the vent and block airflow. If there is a low point, install a drain
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Page 89: ...Issue 16 08 2010 Instruction Manual DVZ SKA BIOMASTER PLUS Page 39 of 39...
