DVZ Biomaster PLUS Series, Final Documentation

Page: 74 / 145

Issue: 16.08.2010 Instruction Manual DVZ-SKA “BIOMASTER“-PLUS Page 24 of 39
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.
9.11 DISCHARGE PUMP CIRCUIT
1. Press the reset button on the overloadprotection inside the control panel and turn the
pump on to determine whether the pump motor overloaded and dropped out of the
circuit.
2. Make sure that all overload heater coils on the pump starter are the size specified on
the electric scheme and check setting for current according motor type plate.
3. If the pump will not start and the pump starter is energised, the problem is in the motor
itself, the motor wiring, or the main contacts of the starter.
4. For mechanical malfunctions, check the specific manufacturers documentation
enclosed in this manual.
9.12 ELECTRODE TYPE LEVEL SWITCH
Clean tips of electrodes for dirt or corrosion. Clean with sandpaper, check isolation, for
specific values and test, refer to enclosed documentation for the level relay enclosed with
vendor's data. Function can be tested by simulation of waterlevels, just connect relevant
electrodes temporarily with electric wire. A low, save voltage is used on the levelcontroler.