DC50 Series Dual-Cool Climate Control
Tube and DC70 Vest Instruction Sheet
Assembly and use
Assembly must be conducted in an uncontaminated atmosphere.
Assembling the Cooling Vest
1. Insert the muffler end of the cooling vest connector hose well into the air
entry sleeve of the vest
(Figure 1)
.
2. Install the small nylon clamp over the air entry sleeve and cooling vest
connector hose. Engage the clamp locks and squeeze until tight
(Figure 2)
.
Head Shield Assembly Instructions
The HSDC climate control heat shield is designed to work with the Bullard DC50
Dual-Cool climate control device.
Assembly
The heat shield is designed to work with the standard nylon belt (part #4612)
supplied with the climate control device.
1. Lace the belt supplied with your climate control device through both the heat shield
slots and the climate control belt bracket slots.
2. Use plastic zip ties (2 inlcuded) to secure the climate control to the heat shield.
(Figure 3)
Donning the Dual-Cool Tube
and Cooling Vest
1. Screw the hose connector that is on the end of the breathing tube to threaded
connector on Dual-Cool. Lace the belt through the slots in the belt bracket
(Figure 3)
.
2. Don the belt, belt bracket, and Dual-Cool. Adjust belt comfortably, but loosely,
around your waist, insuring that the Dual-Cool assembly is on your right-
hand side.
3. Don the vest. Use the Velcro
®
closure strips to adjust loosely for size.
nOTe
The vest should mount over the belt with the Dual-Cool unit positioned in the
“V” of the vest found on the right-hand side
(Figure 1)
.
4. Snap the quick-disconnect nipple found on the end of the cooling vest connector
hose into the quick-disconnect coupler on the Dual-Cool
(Figure 3)
.
5. Don the respirator by following the directions in your respirator instruction
manual. If you do not have instructions, contact Bullard Customer Service at the
address or phone number given below.
6. With the approved Bullard air supply hose connected to the breathing air source, and
with air flowing into the hose, connect the quick-disconnect coupler on the air supply
hose to the quick-disconnect nipple on the Dual-Cool
(Figure 3)
.
7. Adjust the air pressure at the point-of-attachment to within the approved pressure
range found in the respirator user manual
(Figure 4)
.
Figure 2
To remove
To tighten
To tighten
Figure 3
Cooling vest
Connector hose
Quick-disconnect
nipple
Breathing tube
Quick-disconnect
nipple
Zip ties
Quick-disconnect
coupler
Air supply hose
Left-hand
temperature
control knob-for
respirator
Left-hand
temperature
control knob-for
Dual-Cool vest
Threaded
connector
Heat Shield
Belt
Belt Bracket
Quick-disconnect
coupler
Hose
connector
Point-of-
attachment
Grade D
breathable air
source
Pressure gauge
Air supply hose
Vest “V” or notch
Figure 1
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