washroom

Overview

The all fibreglass internal shower module has a small hand wash basin and wet storage area. Using the Thetford C-200 Cassette Chemical toilet with its 180 degree rotating seat allows ample room to have a great shower.

The toilet flush water is provided directly from the ScrubMaster holding tank and it has its own 17Lt Waste Tank.

Hot water is provided by a Webasto Thermo-Top that provides on-demand hot water.

Toilet

TT30 came fitted with a horrid chemical toilet, a Thetford C-200 Cassette toilet. It is connected to the water supply system and flushing is done by means of a 12 V magnetic valve. A blue light comes on at the back of the toilet when its full.

If used with chemicals, every time the slide is opened these systems give off an odour that is really unpleasant. But not as unpleasant as when no chemicals are used.

We have had great success using generic Napisan or 'laundry soaker', based on sodium percarbonate, from Woolworths. This breaks down to hydrogen peroxide and salt, and the peroxide oxygenates the liquids and solids, breaking them down aerobically.

About a tablespoon of Napisan per use seems adequate. The only residue from the Napisan is ordinary salt, used as a filler in the product. The waste is totally safe to dump into septic systems.

Even so, each time the slide is opened there is still an odour. The answer is a SOG system! The SOG 12V ventilation system works on the basis that as soon as the slide is opened on the toilet the SOG fan is activated. Fresh air is sucked in through the opening and acts as a seal to prevent gases from rising up from the cassette. The fan switches off as soon as the slide is closed. An activated carbon filter is located above the LH rear wheel – it needs to be changed when it no longer is effective.

Shower head in position on rail ready for use.

Shower Rail

I have added a shower rail to hold the spray head in position so madam can more readily wash her hair.

The shower slider holder must be set to the top of the rail after use so when the roof is lowered all is good.

Toilet Roll Holder

TT30 came with nothing to hold toilet paper in the washroom. Keeping it dry is a necessity; Whitworths Marine sells a moulded covered toilet paper holder that is attached to the wall, below a mirror held on using double sided tape. Works well.

Soap Holder

So simple its brilliant! Press a steel cap into the soap and a magnet in the wall attachment holds the soap above the basin, dry and ready to use.

Available on eBay in a variety of colours and styles.

Washroom Door

Fitted rare-earth magnets hold the door closed sufficiently well that on normal roads no other latching device is necessary. Off-road, either the supplied elastic strap or a modified bungee strap can be used.

Modifications

The SOG Toilet System

A SOG kit Type B (see here for kit contents) is required for the C-200. These are ridiculously expensive, but I obtained a Type F kit (for the C-250) for a very low price so set about installation of a modified version. First off I bought from Aussietraveller the connector that replaces the overpressure valve. This cost about half as much as the whole kit cost me! Then I decided I would not vent the exhaust air through the filter in the toilet access door, but instead through the floor.

Careful measuring established that a length of 32 mm dia pressure pipe could run down the right hand side of the cassette compartment through the floor and into the filter holder that normally mounts on the door. The filter holder would be upside down under the floor. The fan would fit in a bored out coupler at the top of the pipe and would be connected to the cassette via the flexible hose in the usual manner.

Waste slug from boring a 32 mm dia. hole through the floor of the camper for the SOG vent. It is 46 mm thick.

The hole for the vent pipe is on the edge of the cassette compartment.

Boring through the cassette compartment and camper floor was rather traumatic.

These photos show the completed installation. The fan sits in the coupler at the top of the vertical pipe, and the flexible hose joins to the green connector on the cassette.

The fan body is an easy press fit into the coupler on top of the pipe.

The green connector on the cassette can be just seen.

The tricky bit of the installation was working out where the microswitch goes. This controls the fan, which is on when the slider is open and otherwise off.

The switch was moved on its angle bracket to place it in the correct position. The photo gives a bit of an idea of the final location of the microswitch.

Under the camper, the filter holder with pipe glued in position; the activated carbon filter in place; the view from the rear of the filter holder; and finally, the cassette back in the compartment.

In Use

The carbon filter is a bit of a joke. Smells are outside (an improvement) but they are certainly evident. Plenty of use of the generic Napisan should help.

A sheet of aquarium filter medium is being used. The filter is 46 x 25 x 1 cm. Cut up and doubled in thickness gives four filters for the SOG at a much lower price than the original.

Shower Rail Install

A shower rail has to allow for the pop-top roof movement. A floor to ceiling tube sliding in a tube with a shower head holder clamped to the outer tube would do the job.

Bunnings sold me the Monarch Razorback 1.6m–3m Smart Lock painter's Extension Pole. It consists of tough anodised aluminium tubes, one 25mm dia. and the inner one 23mm dia.
A replacement ABS chrome shower slider holder for a 25mm dia. rail is available from eBay (as are some that can replace it when the shower holder is smashed against the basin!).
To mount the tubes on the ceiling and the floor, use Adoored stainless steel door stops (with rubber stop removed!) for each. They are 25 mm dia. and have a neat flange.

The extension pole was disassembled and several 40mm deep cuts were made in one end of the 25mm dia. tube so that a door stop could be forced onto that end. It was pop-riveted together during installation. The tube/door stop was cut to an overall length of 1140 mm.

Removing the plastic eccentric clip from the black locking device at one end of the 23mm dia. tube left an end piece that helps guide the tube inside the outer one. The tube/end piece was cut to an overall length of 1280 mm and a 10mm offset for the lowest 300mm was bent into the tube so the final upright assembly would clear the toilet. A blue plastic collar from the locking device is retained to wedge into the door stop on the floor and two screws added during installation hold the tube in place.

The collapsable shower rail. The upper tube, attached to the floor, slides inside the lower tube, attached to the ceiling. The shower head holder is in position on the lower tube.

Shower head in position on rail ready for use.

Shower rail attached to the floor.

Shower rail attached to the ceiling; pop-top roof down.

LINKS