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6

 FORM NO L-20347-H-1112

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.

CONTROL VALVE OPERATION

A clear plastic window located in the valve body provides 
visual indication of spool shift.  When the yellow stripe on 
the spool is visible, the valve is in the energized mode.

The red LED, when illuminated, indicates that the valve 
coil is energized.

When the valve coil is energized the air supply is directed 
to the clutch .

When the valve coil is de-energized the air supply is 
directed to the brake.

AIR PREPARATION

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.  Locate the lubricator above and within ten feet of the Clutch/Brake, and use 

a low viscosity oil such as SAE-10.  Synthetic lubricants are not recommended.

NON-LUBRICATED AIR

NOTE:  Lubrication is not required to operate the Integral Valve, but it may be used if necessary.  The use of non-

lubricated air is a matter of customer choice and may be influenced by the machine environment and the products 

which the machine produces.

Nexen recommends the use of filtered, lubricated air to avoid premature seal wear.

When conditions do not allow the use of lubricated air, the preparation of the air is critical to the life of clutch-brake seals.  
Seals are lubricated prior to product assembly, which allows them to be operated with clean, dry non-lubricated air.  

The air preparation should include filtering the air to 5 microns or better.  The dew point specification should be 40°F or 
lower.

LUBRICATED AIR

Nexen recommends one drop of oil for every 20 cubic feet of air.

6.  Turn the Lubricator Adjustment Knob counterclock-

wise until closed.

7.  Turn the Lubricator Adjustment Knob clockwise one-

third turn.

8.  Open the air line to the unit.

Summary of Contents for AIR CHAMP 1125

Page 1: ...1 FORM NO L 20347 H 1112 FLANGE MOUNTED ENCLOSED CLUTCH BRAKES FMCBE MODELS 625 875 1125 AND 1375 WITH LOCKING KEY AND INTEGRAL VALVE...

Page 2: ...out notice Technical Support 800 843 7445 651 484 5900 www nexengroup com Copyright 2012 Nexen Group Inc Nexen Group Inc 560 Oak Grove Parkway Vadnais Heights Minnesota 55127 ISO 9001 Certified Read t...

Page 3: ...5 CONTROL VALVE OPERATION 6 AIR PREPARATION 6 TROUBLESHOOTING 7 FMCBE REMOVAL 7 9 PARTS REPLACEMENT FRICTION FACINGS 9 PARTS REPLACEMENT INPUT BEARING 9 10 PARTS REPLACEMENT BEARINGS AND O RING SEALS...

Page 4: ...ighten them to the recommended torque See Table 1 and Figure 2 On Model 875 secure the Housing Item 1 to the Female Pilot Item 26 using Socket Head Cap Screws Item 27 and tighten them to the recommend...

Page 5: ...DIN Connector onto valve power pins and tightening DIN Connector fastener 4 Connect DIN Connector Cable wires using the following chart to the appropriate power supply Table 3 INLET Exhaust Port Exhau...

Page 6: ...he lubricator above and within ten feet of the Clutch Brake and use a low viscosity oil such as SAE 10 Synthetic lubricants are not recommended NON LUBRICATED AIR NOTE Lubrication is not required to o...

Page 7: ...v l a v l o r t n o c e h t e c a l p e r d n a s l a e S g n i r O e h t d n u o r a s k a e l r i A s l a e S g n i r O e h t e c a l p e R e g a g n e s i d o t e r u l i a F e v l a v l o r t n o...

Page 8: ...11 See Figure 8 4 Remove the six old Flat Head Machine Screws Item 7 and the second old split Friction Facing Item 11 See Figure 8 5 Install the first new split Friction Facings Item 11 and new Flat...

Page 9: ...ing Item 6 See Figure 10 NOTE Proceed with PARTS REPLACEMENT BEARINGS AND O RING SEALS 2 Remove the Retaining Ring Item 6 and press the Drive Disc Item 4 out of Housing Item 1 See Figure 10 3 Remove R...

Page 10: ...ng race to remove bearing held by outer race causes damage to bearing 7 Clean the bearing bore of the Female Pilot Item 26 with fresh safety solvent making sure all old Loc tite residue is removed See...

Page 11: ...6 Remove the other old Ball Bearing Item 19 from the Male Pilot Item 20 See Figure 15 7 Clean the bearing bore of the Male Pilot Item 20 with fresh safety solvent making sure all old Loc tite residue...

Page 12: ...Splined Disc Item 9 into the Air Chamber Item 12 and Piston Item 16 See Figure 16 23 Reinstall Retaining Ring Item 6 See Figure 16 24 Lubricate the new O ring Seals Items 21 and 22 and the contact sur...

Page 13: ...30 out of the Bearing Flange Item 20 See Figure 18 6 Clean the bearing bore of the Bearing Flange Item 20 with fresh safety solvent making sure all old Loctite residue is removed See Figure 18 7 Appl...

Page 14: ...e 2 2 1 l a e S g n i r 4 c s i D e v i r 3 2 t f a h S b u t 5 t n I g n i R g n i n i a t e 4 t x E g n i R g n i n i a t e 6 t x e g n i R g n i n i a t e 5 2 y e 72 w e r c S e n i h c a M d a e...

Page 15: ...g n i n i a t e R 1 5 2 y e 6 t x E g n i R g n i n i a t e R 2 6 o l i P e l a m e 72 w e r c S e n i h c a M d a e H t a l F 2 1 7 e r c S p a C d a e H t e k c o 9 c s i D d e n i l p S 1 9 n w o h...

Page 16: ...i a t e R 1 5 2 y e 6 t x E g n i R g n i n i a t e R 2 6 o l i P e l a m e 72 w e r c S e n i h c a M d a e H t a l F 2 1 7 e r c S p a C d a e H t e k c o 9 c s i D d e n i l p S 1 9 n w o h s t o...

Page 17: ...R 1 5 2 y e 6 t x E g n i R g n i n i a t e R 2 6 o l i P e l a m e 72 w e r c S e n i h c a M d a e H t a l F 2 1 7 e r c S p a C d a e H t e k c o 9 c s i D d e n i l p S 1 9 n w o h s t o n w e r...

Page 18: ...parts specify model designation item number part description and quantity Purchase replacement parts through your local Nexen Distributor FIGURE 23 19 11 58 30 35 20 30 35 58 REPLACEMENT PARTS M E T I...

Page 19: ...TURE WHATSOEVER WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHER BREACH OF CONTRACT NEGLIGENCE OR OTHER TORT OR OTHERWISE EVEN IF NEXEN SHALL HAVE BEEN ADVISED OF THE POSSIBILITY OR LIKELIHOOD OF SU...

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