Operation Of The Hardi Foam Marker; Mixing Of Foam Concentrate - Hardi FOAM MARKER Standard Operator's Manual

4.0 OPERATION OF THE HARDI
1. Mix foam marker concentrate in the foam tank following the mixing
instructions (Section 5).
2. The In-Cab control box is used as follows: (Fig. 5)
Switch "A" is used to alter the frequency of foam
Switch "B" has three positions. In the center posi-
3. Check the performance of the foam marker.

5.0 MIXING OF FOAM CONCENTRATE

Note: Foam concentrate needs to be stored in a frost free place and
CAUTION:
1. Remove fi ll cap on Foam Marker tank. Open fi ll cap slowly and allow air
pressure to be released before removing the cap completely.
2. Fill tank 1/2 full of fresh clean water.
3. Add recommended rate of foam concentrate. We recommend using
HARDI
(29 ml. to 38 liters of water). Amounts may need to be varied depend-
ing on hardness of water and weather con di tions. Refer to the HARDI
foam concentrate label for further in struc tions.
4. Continue fi lling Foam Marker tank with water.
10
drops. Regulation is done using a poten-
tiometer. Turning the knob clockwise will
increase the frequency and turning the
knob coun ter clock wise will decrease the
frequency.
tion the foam marker is switched off.
Activate switch to the left or right cor-
responding to which side foam mark ing
is required.
shaken well before using. If frozen, raise to room temperature,
thaw completely and thoroughly mix prior to use.
FOAM MARKER TANK CONTENTS ARE
UNDER PRESSURE
®
foam concentrate at a 80:1 ratio (approx. 16 oz. to 10 gallons)
HARDI
®
FOAM MARKER STANDARD VERSION
®
FOAM MARKER
CONTROL BOX
A
Fig. 5
B
®