Nexen QFB-2200 963999 - Manual (Page 5)

5 FORM NO. L-20297-C-0603
AIR CONNECTIONS
NOTE: For quick response, Nexen recommends a quick
exhaust valve and short air lines between the Control
Valves and the DFB/QFB.
Figure 4
Tub Fitting
(Item 20)
Tub Fitting
(Item 20)
Tube
Assembly
(Item 21)
Tube
Assembly
(Item 21)
Tube Fitting (Item 22)
Reducer Fitting
(Item 24)
CA CA CA CA CAUTI UTI UTI UTI UTION ON ON ON ON
T T T T To avoid damage and ensure proper o avoid damage and ensure proper o avoid damage and ensure proper o avoid damage and ensure proper o avoid damage and ensure proper
actuation of the D actuation of the D actuation of the D actuation of the D actuation of the DFB FB FB FB FB/QFB, the T /QFB, the T /QFB, the T /QFB, the T /QFB, the Tube ube ube ube ube
Assemblies (Item 21), T Assemblies (Item 21), T Assemblies (Item 21), T Assemblies (Item 21), T Assemblies (Item 21), Tube Fittings ube Fittings ube Fittings ube Fittings ube Fittings
(Item 20), T (Item 20), T (Item 20), T (Item 20), T (Item 20), Tube Fitting (Item 22), and ube Fitting (Item 22), and ube Fitting (Item 22), and ube Fitting (Item 22), and ube Fitting (Item 22), and
Reducer Fitting (Item 24) must be Reducer Fitting (Item 24) must be Reducer Fitting (Item 24) must be Reducer Fitting (Item 24) must be Reducer Fitting (Item 24) must be
used (See Figure 4).
used (See Figure 4). used (See Figure 4). used (See Figure 4). used (See Figure 4).
Note: Use flexible air line to connect from air source to
Reducer Fitting (Item 24) to prevent release or engage-
ment problems.
LUBRICATION
Pneumatically actuated devices require clean, pressure regulated, and lubricated air for maximum performance
and long life. The most effective and economical way to lubricate Nexen Brakes is with an Air Line Lubricator, which
injects oil into the pressurized air, forcing an oil mist into the air chamber.
Locate the lubricator above and within ten feet of the brake, and use a low viscosity oil such as SAE-10.
Synthetic lubricants are not recommended.
LUBRICATOR DRIP RATE SETTINGS
NOTE: These settings are for Nexen supplied lubricators. If you are not using a Nexen lubricator, calibration must
replicate the following procedure.
1. Close and disconnect the air line from the unit.
2. Turn the lubricator Adjustment Knob clockwise three
complete turns.
3. Open the air line.
4. Close the air line to the unit when a drop of oil
forms in the Lubricator Sight Gage.
5. Connect the air line to the unit.
6. Turn the Lubricator Adjustment Knob
counterclockwise until closed.
7. Turn the Lubricator Adjustment Knob clockwise one-
third turn.
8. Open the air line to the unit.