Dräger HPS 3500 Instrucciones De Uso página 11

4.3 During use
4.3.1 Ventilation system use
The ventilation system can be closed to prevent rainwater and
fire-extinguishing water from penetrating. Despite the steel
spark protection mesh, Dräger recommends to completely
close the ventilation system during fires, near fires or when
there is a strong wind. If the helmet is used during water
rescue, Dräger recommends to open the ventilation system.
1. Operate the sliding lever on the top of the helmet with one
hand (see figure 36).
Position 1 = Closed
Position 2 = Open
5 Maintenance
5.1 Maintenance intervals
Inspect the helmet before and after each use, paying particular
attention to all the fastening points (harness and retention
system). Immediately replace any worn and/or damaged parts,
exclusively using spare parts supplied by Dräger, since only
the original spare parts are homologated and guarantee
conformity of the helmet.
Check that there are no colour changes and/or cracks on

the helmet shell and harness.
Check that there are no cuts and/or breakage at the edges

and the holes.
Check that the suspension system is intact by checking the

seams.
Check that the safety goggles are not scratched or

damaged.
5.2 Cleaning
5.2.1 Cleaning the helmet
After each use, put the helmet in its bag or in a closed place
(e.g. locker) away from light and humidity.
Clean the helmet as follows:
Never clean the helmet in the sun.

Disassemble the helmet (see Section 5.3.1 on Page 11).

Clean all the parts inside and outside using only neutral

soap and lukewarm water.
Leave to dry at room temperature.

Do not use dryers.

Before reassembling the helmet, check that all the parts

are completely dry.
When the helmet is completely dry, reassemble it (see

Section 5.3.2 on Page 11).
CAUTION
!
Never use abrasive or strong alkaline detergents,
solvents or organic liquids such as petrol or alcohol!
Otherwise the break strength and thus, the protective
function of the helmet will be decreased.
Dräger HPS 3500
5.3 Maintenance work
INFO: Never apply decals and/or identification labels less than
25 mm from the edges of the helmet shell.
5.3.1 Disassembling the helmet
To proceed with disassembly, place the helmet upside down
on an uncluttered surface in order not to lose any components.
During the disassembly procedures, position all the parts
removed in an orderly way.
1. Pull the strap (see figure 37, item 1) out of the adjusters
(item 2) and out of the adjustment system.
2. Release the rear part (see figure 38, item 3) of the hairnet
(see figure 39, item 4).
3. Release the two tabs (see figure 40, item 5) of the retainer
(item 6).
4. Release the rear of the retainer (see figure 41, item 6) by
pulling upwards so that the clips are released from the
helmet shell.
5. Release the front support ring (see figure 42, item 7) and
pull it upwards so that the clips are released from the
helmet shell, then remove the front support ring from the
helmet (see figure 43).
6. Release the retention system by pushing the fasteners
(see figure 44, item 8) downward and remove the harness
with the retention system.
7. Unfasten the clips (see figure 45, item 9) from the front
support ring (turn and remove).
8. Remove the hairnet (see figure 46, item 4) releasing it from
the respective fastening pins.
9. Release and remove the neck padding (see figure 47,
item 10) by unfastening the hook-and-loop strips.
10. Remove the front support ring with head padding by
unfastening the hook-and-loop strips (see figures 48+49,
item 11).
5.3.2 Assembling the helmet
1. Refit the fasteners (see figure 50, item 1) of the retention
system from the bottom to the top.
2. Fit the clips (see figure 51, item 2) of the retention straps
(see figure 52, item 3) making sure that the strap passes
between the clips and the helmet shell and refasten the
clips (see figure 53, item 4).
3. Fit the head padding (see figure 54, item 5) on the front
support ring.
4. Refit the hairnet (see figure 55, item 6) on the front support
ring.
5. Refit the neck padding (see figure 56, item 7) using the
hook-and-loop strips.
6. Refit the front support ring complete with hairnet and head
padding on the helmet and fasten the rear and front
fasteners (see figures 57/58).
7. Fit the retention system inserting the front straps (see
figure 60, item 8) in the adjusters (item 9) and the rear
straps (item 10) in the retainer (item 11).
8. Fit the anti-stretch strap (see figure 59, item 12) of the
retention system using the adjuster (item 13).
The anti-stretch strap (item 12) stays positioned underneath
the hairnet (item 14).
Maintenance
11