Midland SIDE DUMP GRAVEL TRAILER Operator's Manual page 27

4.4 CONTROLS (cont'd)
2. Tank Drain Valve:
Every air reservoir tank on the trailer is equipped
with a spring-loaded valve that is used to drain
the moisture. These valves are attached to a
cable that extends out to the frame to allow
the operator to drain moisture from the tanks.
Pull on the cable to open the valve and drain
the moisture from the tank. Release the cable
to close the valve. Drain tank daily especially in
humid or cold conditions.
IMPORTANT
During cold weather drain moisture from
the air tanks every day to prevent ice build
up. During cold weather operation, use
only recommended air line antifreeze in the
trailer air system. Alcohol or methyl hydrate
is not to be used because they will remove
vital lubricants causing premature failures of
valves and components.
Traces of these products
will void any warranty
consideration.
Fig. 4 AIR TANK
Tank Valve TW3000
Cable
15