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Xcavator

 Operating Instructions 

3

Familiarization

Control Panel 

Access Door

  1.  Ready indicator
  2.  100 Gram cycle start key (cool mold)
  3.  200 Gram cycle start key (cool mold)
  4.  100 Gram time delay before start indicator (hot mold)
  5.  200 Gram time delay before start indicator (hot mold)
  6.  Abort cycle key
  7.  Exhaust flow Indicator
  8.  Depth of cut selector switch

Setup

Air Supply

1.  Connect your compressed air supply to the air regulator 

inlet hole shown in the photograph (Figures 1A and 1B). 
The inlet hole is a standard 1/8" National Pipe Thread (NPT).

Air Regulator

Setpoint Adjust

2.  With air supply connected, pull knob upward, and 

rotate it until gauge needle points to 35 psi (Figure 2).

nOTE: THIS MAy nEED TO BE RE-ADjuSTED SlIGHTly  
OnCE BEAD FlOW IS ESTABlISHED.

 

Push knob back downward after pressure is set.

Daily Moisture Bowl Check

3.  Pressing upwards on the black plastic ring at the bottom 

of the air regulator opens up a check valve and allows 
accumulated moisture to drain from the clear plastic 
accumulator bowl (Figure 3). It is very important to keep 
drained so that moisture does not pass through to the 
bead reservoir. Moist beads will adhere to each other 
and prevent transfer to the nozzle.

1

2

6

3

7

4

8

5

Figure 2

Figure 3

Figure 1A

Figure 1B

Summary of Contents for Xcavator

Page 1: ...Xcavator User Manual Whip Mix Corporation 361 Farmington Ave P O Box 17183 Louisville KY 40217 0183 USA 502 637 1451 800 626 5651 Fax 502 634 4512 www whipmix com Patent Pending ...

Page 2: ... bead storage container It will raise the temperature of the beads to about 5 above the room temperature This gentle warming will drive off any moisture the beads might accumulate and insure they will transport reliably Treat Pressurized Components With Care Never strike the bead jar or pull on the connecting air tubing while the system is pressurized This can result in cracking the plastic jar or...

Page 3: ...al Pipe Thread NPT Air Regulator Setpoint Adjust 2 With air supply connected pull knob upward and rotate it until gauge needle points to 35 psi Figure 2 Note This may need to be re adjusted slightly once bead flow is established Push knob back downward after pressure is set Daily Moisture Bowl Check 3 Pressing upwards on the black plastic ring at the bottom of the air regulator opens up a check va...

Page 4: ... the hot mold to slip into the chuck without interference which might cause you to lose your grip on the ring with the tongs If you use both tapered and untapered rings of each size you will want to purchase additional chuck assemblies so that you don t have to constantly re adjust the thumb screws See spare parts list in back of manual Chuck Assembly Installation 3 Select one of the two furnished...

Page 5: ...storage bucket to insure that beads will flow through the strainer and transport reliably to the nozzle Fill the jar with 50 100 micron glass beads up to the maximum fill line on the jar then replace the jar lid by screwing it clockwise then snugging it firmly closed by hand Figures 11 and 12 IMPORTANT Never overfill the jar as the beads require at least a half inch of head space to allow room for...

Page 6: ...le is within less than a centimeter of the glass pattern The Xcavator jet nozzle NEVER comes within 2 3 centimeters of the glass pattern and is in CONSTANT MOTION making it impossible to dwell over any given spot on the glass pattern for more than a few seconds The increased distance effectively drops the pressure level of the air propelling the beads so that by the time they reach the glass patte...

Page 7: ...witch Position 4 70 Switch Position 4 60 Switch Position 3 50 Switch Position 3 40 Switch Position 2 30 Switch Position 2 Fill in the data corresponding to the Investment type you use Note Data must be derived from actual pressed rings as the hardness of the rings increases after the pressing heat cycle Testing blank molds which have been through the burnout cycle but not the pressing heat cycle w...

Page 8: ...tor momentarily with the press plunger facing up Figure 4 then reverse the forceps and re grip the mold as close to the door as possible and flip the mold inverted so that the press plunger is now facing downward Step 7 Place the mold on the three threaded screws inside the chuck assembly so that the mold is centered between the three posts Release the tongs and withdraw them Figure 5 Step 8 Close...

Page 9: ... bypass the time delay function by pressing the Active button for the given ring mass and the divesting cycle will start immediately CAUTION DO NOT OPEN THE CABINET DOOR UNTIL THE READY LIGHT TURNS GREEN AND THE BEEPER BEEPS OPENING THE CABINET PREMATURELY BEFORE THE BEEPER CAN ALLOW HAZARDOUS DUST PARTICLES TO ESCAPE INTO THE room Step 11 Open the door and remove the 95 divested mold by hand as i...

Page 10: ... the bowl is empty and a spring will snap it back into place closing the relief valve The whooshing noise should cease If it does not simply push up and release the ring until the noise disappears Jar Lid Gasket Cleaning Over time bead fragments and dust can worm their way up into the retention groove of the Jar Lid and cause air to escape from the jar which is one of the two primary reasons for l...

Page 11: ...hould be replaced with a new O Ring Nozzle Replacement The nozzle should give at least 6 months of service under moderate usage 8 10 rings day You can tell when the nozzle requires replacement by noticing whether the depth of cut becomes significantly shallower than when the tip was new provided the air pressure setting and Depth of Cut settings have not been altered Turn the Xcavator power off Op...

Page 12: ...indication is the two inch plastic tubing on the bottom of the bead jar closest to the front of the Xcavator should be full of beads You can tell this by placing your finger behind the tubing and if the tubing is full of beads you will not see the shadow of your finger behind the tubing If the tubing develops air bubbles or runs completely dry turns almost transparent and the Bead Jar has Beads th...

Page 13: ... can develop are in the two O Ring seals Beads can worm their way underneath the sealing surfaces creating a path for air to escape See O Ring Seal 1 in the Jar Lid and O Ring Seal 2 in the wand in the diagram above The procedure for cleaning the O Ring Seals is described in detail in the Maintenance section of this manual Mold Not Cut to Center Premature Cycle Termination Press the Abort key to r...

Page 14: ...e Leaves Partitions Wand Too Far Penetrates Outer Wall And Creates a Hump Diagnosing Non Cutting Issues No Ready Idle Indication If the Ready Idle indicator is off AND one of the cycle indicators is lit press the Abort key which should cause the cycle indicator to first extinguish then after a few seconds and the swing arm going to the rear most park position the Ready Idle indicator should light ...

Page 15: ...le Time 0 2 51 min 5 51 min 1 2 64 min 5 78 min 2 2 77 min 6 07 min 3 2 92 min 6 40 min 4 3 08 min 6 76 min 5 3 27 min 7 16 min 6 3 48 min 7 62 min 7 3 71 min 8 14 min 8 3 99 min 8 74 min 9 4 30 min 9 43 min 10 4 67 min 10 23 min 11 5 11 min 11 19 min 12 5 63 min 12 35 min 13 6 28 min 13 78 min 14 7 10 min 15 57 min 15 8 17 min 17 91 min Reservoir Bead Consumption Bead consumption will vary signif...

Page 16: ...MPL5300 12 08 ...

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