
www.bullard.com
For optional use with Bullard Airline
Respirators
Includes: Hot/Cold Tube, Flow Control Valve, Belt Bracket, Belt and Heat Shield
Function
The HC2400 is designed to supply a continuous flow of warm or cool air to certain
Bullard Supplied-Air Respirators.
NOTE
HC2400 cannot be used with a low pressure air source such as an ambi-
ent air pump.
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WARNING
This climate control system is not recommended for cooling the air supply when the
air temperature is less than 70°F (21°C). Since the system may cool the incoming
air by more than 30°F (17°C), it is possible for ice to form in the breathing tube and
reduce the airflow.
Failure to follow these instructions could result in death or serious injury.
Air Pressure
Continually monitor the air pressure at the point-of-attachment while operating the
respirator. A reliable air pressure gauge must be present to monitor the pressure.
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WARNING
Failure to supply the minimum required pressure at the point-of-attachment for your
hose length will reduce airflow and could result in death or serious injury.
It is important to operate the Bullard climate control device in the prescribed pressure
range for the particular Bullard respirator you are using. Operating the correct pres-
sure range will insure that the correct air flow is delivered to the respirator and will
maintain the NIOSH approval. Refer to the user manuals’ Breathing Air Pressure Table
to determine the correct pressure that should be used with the climate control device.
HC2400 Hot/Cold Climate Control Tube
Instruction Sheet
Figure 1
Figure 1
Air Supply Hose
Quick-
Disconnect
Coupler
Quick-Disconnect
Nipple
Breathing Tube
Red Side for
Warm Air
Belt Bracket
Blue Side for
Cool Air
Flow Control Valve
Muffler
12
HC2400 Hot/Cold Climate Contr
ol T
ube