4
SET UP AND USE
1. To supply cold air to the respirator connect the
outlet to the NV2021 breathing tube and tighten by
hand. (Fig 1).
2. Connect the NIOSH approved air supply hose to a
breathing air source, supplying Grade D orbetter
quality air. Connect the air supply hoseto the 4000-
01 quick disconnect tail. (Fig 2).
3. With air owing through the respirator, adjust
the air pressure at the point of attachment. (Fig
2) to the recommended air pressure specied in
the BREATHING AIR PRESSURE TABLE (Fig 3).
4. To obtain cooler air turn the regulator control knob anti cockwise, this will increase the airow
out of the exhaust port (Fig 4). Turn the knob clockwise to obtain air closer to ambient temperature.
5. With the compressed air owing into the respirator
at the correct pressure range for the correct supply
hose length you are now ready to enter the work
area. Do no remove your respirator until you are
outside the blasting area.
Make sure you understand the breathing air pressure table
before using the respirator. Make sure you set the correct
air pressure for the correct FIG 2 supply hose length.
WARNING
Fig 1
Fig 2
BREATHING AIR PRESSURE TABLE
AIR
SOURCE
BREATHING TUBE
ASSEMBLY AIR SUPPLY HOSE AIR SUPPLY HOSE
LENGTH
MAX NUMBER OF
SECTIONS
PRESSURE RANGE
(PSIG Air)
Portable or Stationary
Compressor
4000-01
Cold Air Tube
NV2028/
NV2029
25
50
100
150
200
250
300
1
1
2
3
4
5
6
55 - 56
55 - 57
60 - 62
65 - 67
70 - 72
77 - 78
80 - 82
Fig 3
Leave work area immediately if you are unwell, airow
stops or slows down, breathing becomes difcult, you
become dizzy, too cold or if any respirator part is damaged.
WARNING
DO NOT USE THE 4000-01 when ambient temperature
is below 68¡ (20¡C) as ice could form in the cold
air outlet and reduce airow.
WARNING Fig 4
