Bibby Sterilin Distinction D4000, Assembly And Operating Instructions Manual

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List of spare parts
The following components are available from most
laboratory suppliers. In case of difficulty please
contact Bibby Scientific Ltd.
Component Catalogue No. Component Catalogue No.
Support stand D4000/S Reservoir level control WLS
Boiler D4000/B Boiler thermostat WT4
Condenser WC48/M2 Condenser thermostat W14TS
Heating element 240V D240H Reservoir level control pressure switch DPS
Heating element 220V D220H On/Off switch D4000/SW
Hose kit W4000/HK Boiler O rings Top WB48/01
Gasket kit D4000/GK Bottom QR38/24
Boiler thermostat tube WTT48 Heater sealing ring QR38/24
Condenser thermostat tube A515414
Plastic connecting caps QC18/11
Silicone rubber rings QR18/7 and QR18/10
Fault finding
In the event of operating difficulties with your Distinction Water Still,
please consult the following notes. If these fail to identify and remedy
the fault you are advised to contact your supplier or the
Technical Service Department of Bibby Scientific Ltd.
Symptom Cause Remedy
Heater not working a) Burnt out heater Replace heater
b) Failed electricity supply Restore supply
c) Thermostat operated Identify and rectify the
cause and reset thermostat
Water level in boiler a) Supply of cooling water is Adjust the supply to
is too low - heater exposed insufficient approximately 60 l/hr
b) Boiler drain stopcock left open Close stopcock
Water level in boiler a) Flow of cooling water is too high Adjust the supply to
is too high - e.g. water surging approximately 60 l/hr
into condenser b) Drain is restricted Ensure drain pipe falls freely
from Still with no kinks
Distillate temperature is Supply of cooling water is Adjust the supply to
too high - e.g. >50°C insufficient approx 60 l/hr
Water in boiler is “pumped” a) Tubing from condenser Ensure tubing falls freely
out of the boiler to drain distillate outlet to the reservoir from Still with no kinks
is constricted
b) Mounting for condenser Remove obstruction
thermostat is blocked
c) Supply of cooling water Adjust the supply to
is insufficient approximately 60 l/hr
Distillate quality is poor* Boiler heavily scaled Clean boiler
Output less than 4 l/hr Mains electricity supply below –
nominal voltage
*Distillate quality when measured by pH or conductivity is greatly
affected by temperature and the presence of absorbed
carbon dioxide.