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OPERATIONS AND MAINTENANCE PROCEDURES
CONVEYOR OVEN MODELS
JSO-14 JPO-18
GENERAL MAINTENANCE
1.
REPLACING HEATER TUBES (Tip – replace only one tube at a time to prevent
confusion when re-wiring)
a.
DISCONNECT EQUIPMENT FROM POWER SOURCE.
b.
Remove both side panels.
c.
Disconnect heater tube wires from the terminal blocks by pressing firmly on the
+ where each wire is inserted in the terminal block.
d.
Slide the heater tube retainer by loosening the screws and sliding the retainer to
the side so that the holes line up.
e.
Gently
pull the tube to be replaced out of the unit (TIP: Use a long straw or tube
as a wire guide when passing wires from one end to the other).
f.
Gently
slide the replacement tube into the unit.
g.
Slide the retainer back in place to secure the tubes in place and tighten the screw.
2.
REPLACING FAN MOTOR (Tip – make note of which side the label on the fan motor is
prior to removal)
a.
DISCONNECT EQUIPMENT FROM POWER SOURCE.
b.
Remove the bottom cover.
c.
Unplug the fan motor power supply cord.
d.
Remove the (4) screws (and grill) that hold the fan motor in place.
e.
Put the replacement fan motor and grill in place. Using the same (4) screws secure
in place in the same manner as removed.
f.
Reconnect the fan motor power cord.
g.
Replace panels and test under power.
3.
REPLACING BELT DRIVE MOTOR (
NOTE
: 208 volt and 240 volt motors have three
wires, ONLY USE TWO. For 208 volts, use the white and blue wires. For 240 volts, use
the black and blue wires. Use a high temperature electrical tape to cap the unused wire to
prevent short circuit)
a.
DISCONNECT EQUIPMENT FROM POWER SOURCE.
b.
Remove side and bottom panels.
c.
Remove the drive sprocket and chain from the drive motor shaft. (Tip – Loosen
the drive motor mounting screws and slide the motor to loosen the chain)
d.
Trace and remove the two drive motor wires from the terminal block. (Tip – make
note of the color of the wires and only use the same colors on the new motor)
e.
Remove the drive motor mounting screws and slide the motor out of the unit.
f.
Put the new drive motor in place and loosely replace the mounting screws.
g.
Replace the drive sprocket and chain. (Tip - measure the distance from the inside
of each sprocket to the inside wall for perfect alignment)
h.
Slide the drive motor so the chain has between 1/8” and 1/4” play, and then
tighten the four mounting screws.
i.
Replace panels and test under power.
