Technical information

Water tank
500R up to serial number 0265
Capacity: 10 to 110 litres (2 to 25 galls)
The water tank automatically measures
the required quantity of water, set by the
pointer on the graduated scale at side of
tank.
The pointer is locked in the desired
position by means of a wing nut.
Remember to release and re-tighten each
time the pointer is moved.
The operation of the tank is simple. With
the water control lever set in the up
position, the tank will automatically fill.
Filling
Water enters the upper compartment 'A'
through the inlet valve and strainer unit
'B', runs down the syphon cylinder 'C',
thus flooding the lower compartment ‘D'
until the float lifts, cutting off the mains
supply.
As soon as the indicator float in the sight
glass tube 'F' begins to rise, sufficient
water is available for a measured amount
of water to be discharged.
Discharging
Lower the water control lever which, in
turn, lifts the two way valve from its lower
seat to stop any further supply of water
entering the lower compartment and, at
the same time, the required amount of
water will be discharged into the mixing
drum. After discharging, reset lever.
Draining the tank
During periods of frosty weather, to avoid
damage to the water tank, it is advisable
to drain the tank at the end of each day's
work.
To do this, set the pointer at the maximum
discharge amount. Drain by disconnecting
the mains water supply and operating the
water control lever several times, and also
open the drain tap in the bottom of the
tank. Close it again when the tank is
completely empty.
2.10 OPERATION