Nexen SE-200 806000 - Manual (Page 7)

7 FORM NO. L-20084-G-1209
Nexen's SE Brakes engage when the air supply is exhausted
by the control valve or when there is a loss of air supply,
and disengage when air pressure is applied (See Table 1).
For maximum performance, mount the control valve as
close to the SE Brake as possible. A Hose Assembly
(Item 36) is supplied.
SE Brake engagement is controlled by a Restrictor Valve
(Item 41). For faster response, remove the Restrictor Valve.
If maximum response time is needed, install a Quick Exhaust
Valve in place of the Restrictor Valve.
TABLE 1
AIR CONNECTIONS
NOTE
For quick response, Nexen recommends a quick exhaust
valve and short air lines between the Control Valves and
the product. Align the air inlet ports to a down position
to allow condensation to drain out of the air chambers
of the product.
CAUTION
Low air pressure will cause slippage and
overheating. Excessive air pressure will
cause abrupt starts and stops, reducing
product life.
All Nexen pneumatically actuated devices require clean
and dry air, which meet or exceeds ISO 8573.1:2001
Class 4.4.3 quality. The following is a common air supply scheme used with
this product. This is an example and not an all-inclusive
list. All air circuits to be used with this product must be
designed following EN983 guidelines.
WARNING
Never exceed maximum operating
speeds listed for your product.
(See Table 2).
OPERATION
TABLE 2
Model Max RPM
SE 100-1000 1,800
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).
WARNING
Do not run the SE Brake in disengaged
position (locking pin pulled out). Always
manually reengage the SE Brake before
starting motor.
MINIMUM DISENGAGEMENT AIR PRESSURES
MODEL AIR PRESSURE
SE-100 40 PSI
SE-200 50 PSI
SE-500 30 PSI
SE-1000 50 PSI