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LBB 1-23
Despatch LBB 1-23 User Manual
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M
AINTENANCE
LBB Series Oven Owner
’
s Manual
46
Version
20
3.
Slide the panel forwa
r
d (Figure
14). Support the pan
el while
working by
wed
ging a flat
surface between
t
he oven door
and oven ceiling
.
4.
Remove wires
from the old cont
rol instrument (using
P1 Phillips screwdr
i
ver), carefully
noting which wi
res connect to whi
ch terminals (Figure 15).
Thermoc
ouple wires
Control Instrum
ent
High Limit
Instrument
Figure
15
. Re
move old Control and Hig
h Limit Instruments and Wiri
ng (Rear View
).
Figure
14
. Providing ea
sy access to the Contro
l instrument.
45
47
Table of Contents
Default Chapter
5
Table of Contents
5
1 About this Manual
8
Important User Information
8
Manufacturer & Service
9
Organization of this Manual
9
Conventions
10
Specifications
11
Dimensions
11
Capacities
12
Power
13
Temperature
14
LBB Series Oven Operating Conditions
14
Table 1. Operating/Environmental Conditions (for Indoor Use)
14
2 Safety
15
Safety Information
15
Lockout
15
Lockout Requirements
15
Lockout Procedure
15
Provisions for Lifting and Carrying
16
Maintenance
16
Electrical Power
16
Fire
17
Equipment Lockout Requirements
17
Emergency Stop
18
Disconnecting Devices
18
Power Requirements
18
Disconnecting Hard-Wired Units
18
Disconnecting Corded Units
19
Disconnecting Units with (Optional) Disconnect Switch
19
Figure 1. Disconnect Switch
19
3 Theory of Operation
20
The LBB Series Oven
20
Figure 2. LBB Forced Convection Benchtop Oven
20
Figure 3. Uniflow Airflow through the LBB Oven
20
Oven Theory
21
Control Systems
21
Primary Control Instrument
21
Figure 4. LBB Series Oven Primary Control Instrument
21
High Limit Instrument
22
Figure 5. High Limit Instrument
22
Table 2. Control Instrument Explanations
22
Table 3. High Limit Instrument Explanations
22
Product High Limit Instrument
23
Oven High Limit Instrument
23
The Protocol 3 Controller (Optional)
23
Figure 6. Protocol 3 Operator Interface
23
4 Assembly & Setup
24
Unpack & Inspect the LBB Series Oven
24
If Damaged During Shipping
24
Set-Up the LBB Series Oven
24
Select Oven Location/Operating Environment
24
Set-Up Procedure
25
Wiring & Power Connections
25
Figure 7. LBB Series Oven Name Plate Example
26
Figure 8. LBB Series Oven with Top Removed
26
Figure 9. Wiring Access through Rear of Oven
27
Figure 10. Close-Up of Connector Block
27
5 Operation
28
Load Oven
28
Pre-Startup Checklist
29
Operating Procedure-Standard Control Instrument
30
Start Oven
30
Figure 11. LBB Series Oven Control Panel
31
Figure 12. Adjust Damper to Set Exhaust Vent by Rotating the Outer Component
31
Working with the Control Instrument
32
Change Setpoint
32
Control Instrument Parameter Programming Mode
33
Entering Control Instrument Set-Up and Configuration Mode
33
Table 4. Control Instrument Set-Up Parameters
33
Control Instrument Operating Mode Notes
34
Table 5. Control Instrument Configuration Parameters
34
Change Control Instrument Display from Centigrade to Fahrenheit
35
Oven Zone Calibration
36
Set the High Limit
37
Change the High Limit Instrument Setpoint
37
High Limit Instrument Parameter Setup Mode
37
High Limit Instrument Setup Parameters
38
Table 6. High Limit Instrument Setup Parameters
38
Change High Limit Instrument Display from Centigrade to Fahrenheit
39
Working with Optional Protocol 3 Controller Operating Modes
39
6 Maintenance
40
Checklist
40
Lubrication
41
Cleaning and Decontamination
41
Cleaning the LBB Series Oven
41
Decontaminating the LBB Series Oven
42
Routine Tests
42
Test Control Instrument
43
Test High Limit Instrument
43
Replacement Parts
44
Replace the Control Instrument
45
Figure 13. Remove Control Panel to Access Control Instrument (Using T20 Torx Bit Driver)
45
Figure 14. Providing Easy Access to the Control Instrument
46
Figure 15. Remove Old Control and High Limit Instruments and Wiring (Rear View)
46
Figure 16. Prepare to Remove Control Instrument by Removing the Mounting Bracket
47
Figure 17. Connections to Control Instrument
47
Replace High Limit Instrument
48
Figure 18. High Limit Connector Block on Control Board
48
Figure 19. Press and Hold Tabs to Remove High Limit Instrument
49
Figure 20. Connections to High Limit Instrument
49
Replace (Optional) Protocol 3 Controller
50
Replace Heater Unit
50
Figure 21. Remove Screws to Remove each Duct
50
Figure 22. Heater Element Connections
51
Replace Fan Motor
52
Figure 23. Typical Heating Element (Inset Connections See Figure 22)
52
Figure 24. Fan Motor Location
53
Figure 25. Separate Fan Wheel from Fan Motor Shaft
54
7 Troubleshooting
55
Table 7. Common Technical Issues and Remedies
55
DES2000 Control Parameters Check
56
Hi Limit L91 Hi-Limit Reset
58
8 Appendices
59
Standard Products Warranty
59
Optional Equipment
60
Assemble Oven Stand
60
Figure 26. Optional LBB Oven Stand
60
End of Cycle (EOC) Timer Option
61
Figure 27. Timer Option Displays and Switches
61
Operating the Timer
62
Parameter Default Settings
64
Timer Option with Audible and Visual Alarm
64
High Alarm Limit Option
64
Part Lists
65
Mechanical Drawing
65
Electrical Schematics
65
4
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Despatch LBB 1-23 Specifications
General
Brand
Despatch
Model
LBB 1-23
Category
Oven
Language
English
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