DVZ - SERVICES GmbH DVZ - SKA - „BIOMASTER“ - MS Engineering

9.9 WATER SPILLING OUT OF THE CONTACT TANK VENT
This almost certainly is caused by failure of the Discharge pump, its controls, or by
discharge valves being closed.
1. Check valve positions, also in connecting pipe to overboard discharge.
2. Make sure the pump switch is set to Auto and that power is present.
3. Make sure the suction valve from the Disinfection Tank „V3“ is open
4. Check out the starter, motor, (especially thermal protection switch) and pump.
Controls should be set per "Set-Up for Operation" of this manual. Check function by
manual start of pump, if this does not work, check level switch for proper function, if
needed, clean out or replace.
5. If the problem cannot be isolated and repaired quickly, bypass the sewage overboard
to provide the crew with sanitary facilities.
9.10 AERATION BLOWER CIRCUIT
1. Press the reset button on the overload protection inside the control panel and turn the
blower on to determine if the blower motor overloaded and dropped out of the circuit.
2. Make sure that all the overload protection on the blower starter is the size specified on
the electric scheme and set for current as indicated on the motor typeplate.
3. If the blower motor will not start and the blower starter is energised, the problem is in
the motor itself, the motor wiring, or the main contacts of the blower starter.
4. If the blower motor will only operate when the blower button is manually held on, the
blower starter auxiliary contacts are not closing in parallel with the blower button
contacts. Replace auxiliary relay and start again.
5. For mechanical malfunctions check the specific manufacturers documentation
enclosed in this manual.
Issue: 10.06.2009 Instruction Manual DVZ-SKA-“BIOMASTER“ Page 18 of 37
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