VARIMOT®   INFORMATION GENERAL INSTRUCTIONS Each   drive   Is   tested   before   it   leaves   the   factory.      Proper installation and operation are essential for good performance. The drive must be fastened on a solid base, free of vibration and   according   to   the   mounting   position   indicated   on   the nameplate.  Feet or flanges can be damaged if the unit is not mounted   on   a   solid   and   even   mounting   base.      Shim,   if necessary. Do not hammer on sprockets, couplings, etc.  when mounting these items on the output shalf.  Severe damage can be done to the bearings. The   shaft   diameters   have   tolerances   of   +.000"-.0005"   for diameters    smaller    than    1.500",    and    +    .000"-.001"    for diameters larger than 1.500".  Tolerances for metric shafts are listed in Eurodrive's catalogs. Each Varimot is equipped with a friction disc (driven disc) and a  driving  disc.    Varimots  D12,  D22,  D32,  and  D42  have  a friction disc from a phenolic material. REPLACEMENT OF A PHENOLIC FRICTION DISC: Remove four (4) bolts - #9 Split the traction housings Mark  the  friction  disc/hollow  shaft  assembly  so  the  lobe cams   at   the   end   of   the   shaft   assembly   can   later   be engaged at the same place Remove the friction ring screws - #11 Replace the friction disc - #10 Before   assembling   the   housing,   clean   the   driving   disc face so it is completely free from oil and grease On   Varimot   models   D23,   D33   and   D43,   the   friction   disc cannot be separated from the hollow shaft assembly because the carbon disc is an integral part of the shaft assembly. When  the  friction  disc  is  checked  or  replaced,  perform  the following regreasing of the bearings and lobe cams: 1. Pull out hollow shaft assembly - #3 2. Regrease needle bearings - #7  (Shell  Alvania  R3  or equivalent) 3. Grease lobe cams - #8 (Lubriplate Grease GR-132) When  regreasing,  do  not  overfill  cavity.    Too  much  grease generates an excess amount of heat. If   the   lobe   cams   are   worn   excessively   and   can't   function properly   by   sliding   over   each   other,   replace   both   shafts involved. ASSEMBLING THE TRACTION HOUSING 1. When assembling the unit, make sure the cams are engaging the same way as they came out. 2. The cams must be properly engaged.  Push the shaft assembly "in" against the spring force. 3. Tighten   bolts   #9   diagonally   making   sure   that   the cams are properly engaged. Upon  completion  of  the  assembly,  run  the  Varimot,  under power,  through  the  whole  speed  range  checking  for  noise  or vibration. If due to operation problems, (jamming of the driven machine) the  friction  disc  has  stalled-out  and  the  disc  is  damaged  or has  become  noisy:  Remove  the  hollow  shaft  assembly  with friction disc completely.  Face off the friction disc on a lathe. Remove  enough  material  to  clean  up  the  face.    Reinstall  the shaft assembly. REMOVAL OF THE DRIVING CONE The driving cone can be removed in 2 ways: 1. By using a wheelpuller 2. Pressing the rotor out of the driving cone. When  method  1  is  used  make  sure  the  fingers  of  the  puller don't   fracture   the   cast   iron   driving   cone.      Use   a   spacer between  the  puller  fingers  and  the  driving  cone.    This  will reduce the possibility of fractures. Method 2 requires complete disassembly of the motor. 1. Remove the fan guard, enshield and stator. 2. Remove the snapring which holds the bearing behind the driving cone in its' place. 3. Press out the rotor shaft. For assembly of the unit: 1. Install rotor shaft with bearing. 2. Install snapring. 3. Press on the driving cone. 4. Assemble stator, end shields, fan guard. VARIMOT®    UNITS  SUITABLE  FOR  OUTDOOR  DUTY  OR WASHDOWN APPLICATIONS The units are equipped with drain hoes at the lowest point for the mounting position listed on the nameplate. If the mounting position gets changed, please make sure new drain holes are drilled so the water or condensation can drain off properly. Options: Varimots can be supplied with (See Diagram): Electric remote control motor - 23C0460V,3 Phase, or 115V, Single Phase Remote speed indicator (percentage speed indicator, 20100%) Handwheel  with  speed  position  indicator  (HS  Option).    HS Option can only operate with the handwheel shaft horizontal. The  torque  is  transmitted  from  the  driving  disc  to  the  friction disc.  Torque demand at the output shaft is transformed into axial load against the driving disc through a set of cams called the "torque compensator." By that means, wear is avoided at no load. This variable speed drive consists of the following components: 1) Motor with dove tail slide 2) Driving disc 3) Hollow shaft with friction ring and output shaft 4) Housing 5) Traction housing 6) Speed adjustment 7) Needle bearings 8) Torque compensator (lobe cams) 9