8
FORM NO. L-20117-G-0914
AIR CONNECTIONS
(continued)
NOTE: When connected directly to the brake, rigid pipe or
tubing will prevent proper actuation of the brake.
Use only flexible hose or tubing.
Valving, tubing, hose, and fitting I.D. must be a
minimum of 1/2".
FIGURE 7
Tee the supply air before the
brake and have equal amounts
of hose line between the Tee
and both inlet ports.
Air
Supply
Tee
Hoses
CAUTION
To avoid damage to the brake, Tee the
supply air before the brake and have equal
amounts of hose line between the Tee
and both inlet ports. Use of both ports is
mandatory to ensure proper actuation of
the brake (See Figure 7).
WARNING
Never exceed maximum operating
speeds listed for your product.
(See Table 4).
OPERATION
TABLE 4
Size
Max RPM
DFB/QFB 1150
2200
DFB/QFB 1650
1500
DFB/QFB 2200
1100
DFB/QFB 2500
1000
CAUTION
The temperature limits for this
product line are 4.5-104 Degree
Celsius (40-220 Degree F).
WARNING
Ensure proper guarding of the product is used.
Nexen recommends the machine builder
design guarding in compliance with OSHA 29
CFR 1910 “Occupational Safety and Health
Hazards”.
CAUTION
Never exceed life of facing material. Facing
life depends on the volume of material and
the total energy over the life of the unit.
Expected life (in hrs) can be found by:
Time=Volume/(Power*Wear Rate).
