BOC Edwards 18B4B, Instruction Manual, Page: 4 / 62

Feb 04 Issue A
18B4B Vapour Booster Pumps
PAGE
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ii
3.12 Filling procedure 26
3.12.1 Introduction 26
3.12.2 General filling procedure 26
3.12.3 Filling procedure for adjustment of the fluid low
level switch
28
3.13 Connect the optional fluid low level switch (if fitted) 28
4 OPERATION 29
4.1 Introduction 29
4.2 Check the insulation resistance of the heaters 29
4.3 Start-up 30
4.4 Rough pumping 30
4.5 Adjust the boiler protection thermal snap-switch
(if necessary)
30
4.6 Re-admission of air to your vacuum system 32
4.7 Re-evacuation of your vacuum system 32
4.8 Shut-down 32
5 MAINTENANCE 35
5.1 Safety 35
5.2 Tools and equipment required 35
5.3 Maintenance plan 36
5.4 Check the pump fluid-level 36
5.5 Inspect the pump fluid (and drain if necessary) 37
5.6 Clean and inspect the pump 37
5.6.1 Introduction 37
5.6.2 Dismantle the pump 37
5.6.3 Clean the main pump components 39
5.6.4 Clean the interior components 39
5.6.5 Clean the boiler and fluid return pipes 39
5.6.6 Reassemble the pump 40
5.6.7 Prepare the pump for operation 41
5.7 Clean the radiation shield 41
5.8 Replace a pump heater 42
5.8.1 Prepare the pump 42
5.8.2 Identify and remove the defective heater 42
5.8.3 Assemble and fit the new heater 44
5.8.4 Reassemble the pump 44
5.9 Check the heater clamp plate and retaining nuts 45
5.10 Clean the cooling-coil 45
5.11 Fault finding 45
6 STORAGE AND DISPOSAL 49
6.1 Storage 49
6.2 Disposal 49
CONTENTS (CONTINUED)
Section Page