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JBA5
Grant JBA5 Service Manual
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Unstirred
water bath SAP, JBA, JBN
Service Manual (Vers
ion 2.0)
July 2014
31667
Page 7 of
23
2.3.1
Removing the base
plate
Remove the 4 Posidrive screws holding the base plate in position. The plate can then be
lifted
off the case. All the internal component parts are now visible
On later manufactured units, the base plate is also secured with plastic push fit rivets.
Remove these by lifting the head of the rivet with flush cutting side cutters
1
2
3
4
6
8
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 JBA5 Specifications
General
Brand
Grant
Model
JBA5
Category
Laboratory Equipment
Language
English
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