Technical_reference - 第74页

Technical Service Manual 74 Revision Dat e: August 2004 REMOVE AND REPLACE CONVEYOR RAILS AND CHAINS DISCONNECTING RAILS AND CHAINS 1. At the off -load end of the oven, rem ove the c hain guard from each c hain by removi…

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Technical Service Manual 73 Revision Date: August 2004
5. CALIBRATION PROCEDURE FOR MINARIK CONTROLS
Tools required:
Multimeter (auto-ranging)
Small non-metallic screwdriver
Speed indicator
Before connecting the power supply:
1. Set the two ‘Jumper’ to ‘signal’.
2. Set the MAX SPEED pot to full clockwise.
3. Set the MIN SPEED pot to full counter clockwise.
4. Set the IR COMP pot to the setting shown below.
5. Set the TORQUE pot to the setting shown below.
6. Set the signal Pot to full clockwise
With the power supply connected:
1. Set the multimeter to VOLTS AC and measure the input voltage to the control. If the voltage is less than
108V or greater than 132V disconnect the power supply and correct the supply voltage problem.
2. Disconnect the multimeter and set to measure VOLTS DC. Attach leads to the motor side of the control.
- In the Program Diagnostics, set the conveyor speed to 0%.
- Set the MIN speed pot so the conveyor is just barely moving.
3. Set the speed indicator on the front panel to 100 or full speed.
4. Adjust the MAX SPEED pot until the VOLTS DC equals the armature voltage listed on the motor
nameplate.
5. Check the speed of the conveyor.
6. Calibration is complete.
TORQUE IR COMP
MINARIK DRIVE POTENTIOMETER SETTINGS
Technical Service Manual 74 Revision Date: August 2004
REMOVE AND REPLACE CONVEYOR RAILS AND CHAINS
DISCONNECTING RAILS AND CHAINS
1. At the off-load end of the oven, remove the chain guard from each chain by removing the 1/8" hex key head screws.
2. Run the conveyor until the master link for one or both chains comes up just under the rail. Remove the master link(s)
from the chain(s). Unthread the chain from all of the pulleys that it wraps around on its way under the oven. Make sure
that the chain is off the drive sprocket and tie wrap it to the idler shaft just below the end of the oven. Be sure to note the
position of the chain around all pulleys. Go to the on-load end of the oven and remove the chain guards. Pull the chains
out of the rails in the direction of the on-load end of the oven. Let the chains drop down and tie wrap them to the idler
shaft below the end of the oven.
3. If only one master link came into position, run the conveyor until the second chain master link shows up. When it
does, remove it as you did on the other chain.
4. Remove the 5/32" hex head screws holding each rail onto the conveyor assemblies.
5. Remove the rails. DO NOT to let them bend or they may be permanently deformed.
RECONNECTING RAILS AND CHAINS
1. Reconnect each rail to its end assembly using the 5/32" hex head screw.
3. Install the chains in the rails making sure the long pins face in toward the center of the oven. Be careful not to twist
the chains.
4. Slide the chains through the rails until they reach the off-load end of the oven.
5. Rethread the chains on the sprockets and idler pulleys at the on-load end of the oven. Reinstall the chain guards with
the 1/8" hex key head screws.
6. At the off-load end of the Oven, rethread the chains through the sprockets and idler pulleys. Reconnect the master
links in both chains. Make sure the closed end of the keeper clip is facing the direction of conveyor travel (off-load end).
Reinstall the chain guards on the rails with the 1/8" hex key head screws.
7. Make sure the chains are not hung up or twisted anywhere on top or underneath the Oven.
Technical Service Manual 75 Revision Date: August 2004
DRIVE MOTOR SERVICE & REPLACEMENT
CONVEYOR DRIVE MOTOR REPLACEMENT
MOTOR LOCATION
There are only two locations for the conveyor motor on all Vitronics-Soltec Reflow Ovens. On an oven with a left to
right conveyor, the motor assembly is in the front right corner of the oven. On an oven with a right to left conveyor
system, the motor assembly is on the front left corner of the oven.
CONVEYOR MOTOR
To remove/replace the Conveyor Drive Motor:
1. Open the Hood
2. Turn off the U.P.S. and disconnect all power from the oven.
3. Remove the long sheet metal piece around the Operator’s Control Panel on the end the oven.
4. The Motor is mounted with four bolts on the Oven Frame “C” Channel. Loosening the four bolts will allow the
Chain to be removed from the Clutch Drive Sprocket without removing the Master Link from the Chain.
5. Unplug the Motor power leads.
6. While supporting the Motor, remove the four bolts. Remove the motor, mounting plate and clutch sprockets from
the Oven.
7. Rotate the Motor to permit access to the setscrews that secure the Clutch Assembly to the Motor Drive Shaft.
Loosen the setscrews and remove the Clutch Assembly, then remove the Motor from the mounting plate.
8. Reverse steps 7 through 1 to replace the Conveyor Drive Motor
THE “MOTOR REPLACEMENT” IS NOT COMPLETE UNTIL YOU:
Check the tension of the Drive Chain as well as the alignment between the Clutch Drive Sprocket and the End Assembly
Drive Sprocket. The chain should have some slack, but not enough to remove the chain from the sprocket(s).
The alignment of the two (2) sprockets should be as exact as possible.
1. Run the oven to verify that the MIN/MAX speed settings with the new motor are similar to the speed settings with the
old motor.
Left To Right Conveyor