VARIGEAR®   INFORMATION Varigear®    (VU) With Option H BELTCHANGE PROCEDURE: VU1-VU6, VZ1.VZ4 1. Run  the  unit  to  its  maximum  speed  by:  Rotating the handwheel CCW to its' maximum limit. 2. Disconnect the electrical power from the motor controls. 3. Remove the side ventilating louvers or covers 4. Remove cover items #2 and #3. 5. Remove the 4 or 6 bolts which hold the 2-beltcase halves together. 5a Support  motor  before  separating  belicase  halves. (VZ1-VZ4 models only). 6. Split the beltcase.  (VU1-VU6) 6a Separate   the   beltcase   halves   by   a   few   inches. (VZ1-VZ4 models only.) 7. Press a wooden block between the 2-pulley halves of the M lower (driven) pulley.  (The pulley halves must now   be   opened   to   their   maximum   position.)   The wooden block will keep the driven pulley open when the belt is removed.  DO NOT use a tapered wedge. A tapered wedge may fly out and cause bodily harm. Varigear®    (VZ) With Option H Std.  Supplied Varigear® Variable Speed Units Varigear®    VU1-VU6 8. Open-up the upper (driving) pulley halves to their maximum position, remove belt. 9. Install  the  new  belt.    First  wrap  the  belt  around  the driven pulley and secondly around the driving pulley. 10. Remove  the  wooden  block,  reassemble  beltcase, install covers and louvers. 11. Turn the handwheel so the driving (upper) pulleys close and the belt is properly seated.  When readjusting rotate pulleys  and  belt  by  hand.    When  properly  seated,  the unit can be started-up under power. WARNING NEVER    ATTEMPT    TO    DISASSEMBLE    A DRIVEN PULLEY ASSEMBLY.  THE SPRING IN THE ASSEMBLY CAN ONLY BE REMOVED     BY     AUTHORIZED     FACTORY PERSONNEL   WITH   SPECIAL   TOOLS.      A SUDDEN  RELEASE  OF  THE  SPRING  CAN CAUSE   SEVERE   BODILY   HARM.      WHEN THE EF OPTION IS SUPPLIED, MAKE SURE THE MOTOR IS ADJUSTED TO ITS' MINIMUM SPEED SETTING BEFORE MOUNTING    THE    MOUNTING    BRACKET. WHEN   A   UNIT   IS   EQUIPPED   WITH   THE OPTIONS  H,  H,  HS  OR  EF  FOLLOW  THE SAME BELTCHANGE PROCEDURE. CAUTION: DO NOT ATTEMPT TO CHANGE SPEED WHEN THE BELT IS NOT ROTATING. FOR LONG BELT LIFE OPERATE THE UNITS IN THE TEMPERATURE RANGE (-20 degrees F to 105 degrees F) KEEP THE VENT OPENINGS CLEAN! IF THE HANDWHEEL ROTATES DUE TO VIBRATION, TIGHTEN UP THE LOCKSCREW #6 Std.  Supplied Varigear® Variable Speed Units Varigear®   VZ1-VZ4 11