The 1st type water tank has volume of 685 liters, made of stainless steel with dimensions Length: 2760 mm, Diameter: 591 mm. These tanks are installed in twos in the underframe.

Every 3 years, replace all the hoses and rubber joints under the coach, disassemble discharge valve and replace seal components, clean components with 4% citric acid solution.

Every year, fill 4% lemon acid solutions into the lavatory bowl/pan. The liquid should cover the spray nozzles. Immerse for one hour and then clean with clean water and soft brush.

Every month, check whether there is water or air leakage on Western Style Module/Indian Style Module, and check all hose pipes underframe, replace if necessary.

Total peak power per coach will not exceed 40 watts for the Electro Pneumatic Pressurized Flushing System.

Electro pneumatic pressurized flushing system is designed for a usage of minimum 150 times within 24 hours.

The power consumption of Electro Pneumatic Pressurized Flushing System is ≤10 Watts.

Electro Pneumatic Pressurized Flushing System (EPPFS) is positive displacement type having "Piston-Cylinder arrangement" type set up for creating pressurized water supply without allowing water coming into contact with pressurized air.

Close the lid before flushing and open the lid after flushing cycle is completed. Do not flush the toilet while seated.

The manufacturer recommends not to throw any objects like cigarettes, cotton swabs, medicine, paper towels, wipers, diapers, sanitary napkins, wrappers, plastic/metal objects, chemical substances, etc. inside the toilet pan.

Water supplied to the toilet must flow through mesh filter/Y-strainer to avoid choking of pan nozzles.

Using chemical agents may result in weakening of the rubber elements inside the valves which may result in loss of tightness and incorrect operation. Such chemicals on entering bio-toilet will affect the bacteria culture.

Discoloration on the surface can be removed using mild soap solution. Do not use any chemical agents like aggressive acids or strong bases.

Do not clean polished stainless steel toilet pan with a brush as it may scratch the surface of the toilet pan. The polished surface prevents dirt from sticking and shortens cleaning time.

Toilet pan has to be covered during hard reserve cycle for safety reason while removing the major block in toilet pan, as waste moves in opposite direction.

To activate hard reverse mode, press S1, S2 and S4 and hold for 3 seconds, then confirm the mode by pressing S3.

Hard reverse is just opposite of soft reverse. In this mode waste moves in the opposite direction to the one used in normal operation. The purpose is to remove or clear the blockage of bowl/pipe which are unable to suck by Pinch Valve.

For soft reverse in old design Bio-Vacuum toilet system and in Amit Engineers System, press and hold S1, S2 and S3 for 3 seconds. Pinch hole opens and sucks the clogging about 20 to 25 times. This is recommended in en-route trouble.

There is a sensor inside the overhead water tank. If water level goes below it, "NO WATER" indicator will light up.

Air pressure must be at least 4 bar. Lower pressure can cause the toilet to be plugged. Pressure below 2.5 to 3.5 bar will cause the toilet to shut down and no air indicator will light up.

Two pressure surges empty the contents of the Intermediate tank into the Bio digester. At the same time, the water inlet valve opens and the flush water tank is refilled.

After the pinch valve is closed, compressed air is blown into the Intermediate tank until a pressure of approx. +0.6 bar is reached.

As soon as the required vacuum level is reached, the pinch valve between squatting bowl and intermediate tank is opened for a short time. The vacuum inside the intermediate tank sucks the contents of the bowl into the base unit.

When the flush button is pressed, the LED on the flush button begins to flash and the squatting toilet starts the flush cycle.

In standby mode, the squatting bowl is filled with initial water, the flush water tank is filled, and the base unit is empty. Inlet and outlet pinch valves are closed, and the LED on the flush button illuminates permanently.

The panel is provided in the space mentioned in the RCF drawing no. MI005425.

The Air Filter Regulator is fitted before the Control panel box and provides clean air input to the solenoid valves. It also helps to regulate the desired air pressure as per system requirement.

The Vacuum Ejector generates the vacuum by a flow of compressed air in the vacuum tank. It also exhausts the unwanted gases from the system.

The sensor is activated with a delay to avoid accidental activation during the flush cycle or while cleaning. It is maintenance-free.

The optical liquid level guard ensures that the bowl will not overflow. The sensor is activated with a delay to avoid accidental activation during the flush cycle or while cleaning.

External connections for the toilet system are: Compressed air Ø6 mm, Water Ø12 mm, Outlet Ø48 mm.

The toilet pan has mechanical mounting holes of Ø 6.5 mm with 8 holes provided.

Indian style toilet pan is as per RCF drawing no. LE63202 alt.2, while western commode is LS63117.

RCF Drawing number for western commode is LS63117, while Indian style toilet pan is LE63202 alt.2.

It is desirable that at least minimum 2 (two) number of usages are feasible when the air supply as specified above is disconnected/cut-off.

The 06 partition walls inside the tank create multiple chambers that facilitate the anaerobic digestion process by controlling the flow and retention time of waste material.

Stronger bonding of colonized rubber mats with vertical walls is one of the constructional features to ensure the mats remain securely attached during train movement.

The total volume of Bio-Digester tank is 410 litres and working volume is 332 litres, giving a difference of 78 litres which accounts for the space occupied by internal partitions and mats.

Each mounting is with the provision of 02 nos. M16 Size bolts which are tightened with the inner and outer head stocks. With two mounting points, total 4 bolts are used.

The exact dimensions of the Bio-Digester tank are Height: 515 mm, Width: 766 mm, Length: 1040 mm. The mounting system is provided along the length of the tank with 02 nos. inbuilt C-Type mounting system.