Operation Instructions
By turning the adjustable grip on the handle the quantity
of foaming agent concentrate can be adjusted. In total
the ST-73 has five fixed positioning points for varying
the dosage. Selection is achieved by turning the
adjustable grip.
Flush the foam lance through after use internally &
externally with clean water
Position
Dilution Rate
I
2-2.5%
II
4-4.5%
III
5-5.5%
IIII
6.5-7%
IIIII
7.5-8%
The flat steel nozzle at the end of the ST-73 foam
lance can be rotated to any position. For this you
only have to turn the nozzle guard in the desired
direction.
Cleaning & Changing the filter pad
If the foam pattern is not as desired, amongst other things, the
cause may lie with the filter pad or injector nozzle. If this is the
case, you may need to carry out the following remedial steps:
Cleaning/Changing filter pad
1.
Loosen the locking screw (3) with a cross head screw-
driver
2.
Screw a component with a 1/4”M thread e.g. a short
tube, into the injector unit (1)
3.
Withdraw the injector unit slowly from the ST-73 foam
lance (4)
4.
From the injector unit (1), remove the foam pad (2)
5.
Rinse the filter pad under clean running water and if the
pad (2) is damaged, replace it. (Part No: 040073503)
6.
Check to see, before reassembling the foam lance,
whether all o’rings on the injector unit are in serviceable
condition, and replace if required
Tel:
01768 865985
Fax:
01768 890033
Email:
Website
: www.gspen.co.uk
