LAC Series Oven
Owner’s Manual
M
AINTENANCE
Version 106
33
Copyright © 2011 by Despatch Industries.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
4.
Unscrew the screws holding the heater frame to the oven body (Figure 12).
5.
Unplug the motor harness from the circuit board and remove motor and heater
ground wires from ground stud.
6.
Unplug heater leads from circuit board and thermocouple leads from control.
7.
Pull off fresh air damper handle from damper arm.
8.
Remove screws holding fresh air damper arm assembly to control panel.
9.
Remove the chamber floor plate.
a.
Remove the screws from the floor plate.
b.
Lift the floor plate out of the oven.
10.
Remove the left side wall.
11.
Remove fan and heater plug assembly from oven by lifting on the air outlet of the
assembly and pushing from underneath.
12.
Remove heater (do not disconnect wires).
13.
Remove the fan inlet plate.
14.
Loosen the set screws (2) on fan wheel and remove wheel.
15.
Remove the screws (4) holding the fan motor in place.
16.
Remove the fan motor.
17.
Install the fan motor.
a.
Insert shaft seal onto shaft.
b.
Insert the shaft into shaft collar.
c.
Fasten motor to plug assembly with the four screws.
18.
Install fan wheel onto motor shaft.
19.
Replace and fasten the fan inlet cover.
20.
Adjust the fan wheel for 3/16 inch clearance between the wheel and the inlet ring
and tighten the set screws on the fan wheel. Check that the set screws hit the flats
machined into the motor shaft.
21.
Replace and fasten heater.
22.
Replace fan and heater plug assembly in oven body.
23.
Replace left side wall.
24.
Replace and fasten floor plate.
25.
Replace fresh air damper arm assembly.
26.
Replace fresh air damper handle.
27.
Connect heater leads to circuit board.
28.
Connect motor wire harness and fasten motor and heater ground wires to ground
stud.
29.
Connect thermocouple wires to control.
30.
Replace control panel in oven body.
Before disconnecting leads, carefully diagram (or note) which
wires connect to which terminals.