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JBA12
Grant JBA12 Service Manual
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Unstirred
water bath SAP, JBA, JBN
Service Manual (Vers
ion 2.0)
July 2014
31667
Page 9 of
23
Remove the drain tube from the tank by sliding it off the plastic f
itting.
Holding the tank against the bench, lift the outer case up and away from the tank and heater
assembly
Th
e
PCB and mains cable and inlet are now accessible.
8
10
Table of Contents
Table of Contents
2
Introduction
3
Service Address
3
Servicing Advice
3
Cautions & Warnings
3
Electrical Safety
3
Product Description
4
SAP, JBA & JBN Range
4
Basic Description
4
Dismantling a Unit
6
Removing the Base Plate
7
Removing the Tank, Heater and Probe Assembly
8
Removing the PCB Assembly
10
Removing the Front Panel Membrane Keypad
10
Reassembling the Unit
10
System Schematic & Interconnect Diagram
11
Common Service Tasks
12
Resetting the over Temperature Cut-Out
12
Replacing a Tank, Heater and Probe Assembly
12
Replacing the Fuses
13
Replacing Control and Display PCB
13
Fault Diagnostics and Test
14
Test Equipment & Tools Required
14
Testing and Fault Finding
14
Test/Fault-Finding Flowchart
15
Useful Values for Fault Finding
17
Final Tests - Electrical Safety
17
Check Earth Connection
17
Check Insulation
17
List of Display Messages
18
Operating Messages
18
Fault/Diagnostic Messages
18
Service Parts
19
Other Technical Documentation
22
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Grant JBA12 Specifications
General
Brand
Grant
Model
JBA12
Category
Laboratory Equipment
Language
English
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