3
2
PRELIMINARY EXAMINATION
Remove the pump from the packing material and examine it carefully
to make sure that no damage has occurred during shipping. If there
is any noticeable damage, notify your Dealer.
Each pump is supplied complete with:
• discharge and suction valves
• LDPE tubing, 7 m (23')
• power cord
• instruction manual
Note:
Save all packing material until you are sure that the pump
functions correctly. Any defective item must be returned in the
original packaging together with the supplied accessories.
READ THE INSTRUCTIONS ATTENTIVELY
BEFORE INSTALLING OR OPERATING YOUR PUMP
The BL electronic dosing pumps are easy to use. We recommend,
however, that you read the entire manual before using the pump.
Familiarity with the features and controls of the unit will give you a
better idea of the dosing potential and help reduce operator errors.
Please operate the pump only as directed in the instruction manual.
Follow all general safety guidelines during operation.
Remember: electrical devices are potentially hazardous. Check that the
voltage of the installation matches the voltage indicated on the
specification label on the back of the pump.
Note:
It is the responsibility of the user to install and ground the
pump properly; it is highly recommended to install an external
switch.
Each pump is protected by a 1 A/250 V fuse that is located together
with 1 spare in a drawer on the power socket under the pump.
Always store chemicals in safe, out of reach places. Follow the
directions for use with each chemical. Do not assume chemicals are the
same because they look alike. Hanna Instruments cannot be held
responsible for the misuse of chemicals or the pump.
Always wear protective clothing (gloves and safety glasses) when
working near chemical dosing pumps. When pumping chemicals,
make sure all tubes are securely attached to the fittings. It is
recommended that tubing is shielded to prevent possible injury in
case of rupture or accidental damage.
Avoid using a pipe wrench or pliers on plastic parts and connectors.
Dear Customer,
Thank you for choosing a Hanna product.
Please read this instruction manual carefully before using the pump.
If you need additional technical information, do not hesitate to e-mail
us at
.
These instruments are in compliance with the
directives.
TABLE OF CONTENTS
PRELIMINARY EXAMINATION ........................................................ 3
GENERAL DESCRIPTION ................................................................ 4
FLOW RATE CHART ....................................................................... 5
FUNCTIONAL DESCRIPTION BL 7916 ............................................ 6
FUNCTIONAL DESCRIPTION BL 7917 ............................................ 7
SPECIFICATIONS ........................................................................... 8
VALVE / HOSE ASSEMBLY DIAGRAM ............................................. 9
MECHANICAL DIMENSIONS ........................................................ 10
INSTALLATION ........................................................................... 11
OPERATIONAL GUIDE ................................................................. 18
pH CALIBRATION ....................................................................... 22
TROUBLESHOOTING GUIDE ........................................................ 23
MAINTENANCE ........................................................................... 24
ELECTRODE CONDITIONING AND MAINTENANCE ........................... 26
TAKING REDOX MEASUREMENTS ................................................. 30
CHEMICAL COMPATIBILITY GUIDE ................................................ 32
ACCESSORIES ............................................................................. 34
CE DECLARATION OF CONFORMITY .............................................. 38
All Hanna Instruments
pumps are warranted for one year
against defects in
workmanship and materials when used for their intended purpose and maintained
according to instructions. This warranty is limited to repair or replacement free of
charge. Damages due to accident, misuse, tampering or lack of prescribed main-
tenance are not covered. If service is required, contact the dealer from whom you
purchased the instrument. If under warranty, report the model number, date of
purchase, serial number and the nature of the failure. If the repair is not covered by
the warranty, you will be notified of the charges incurred. If the instrument is to be
returned to Hanna Instruments, first obtain a Returned Goods Authorization Num-
ber from the Customer Service department and then send it with shipment costs
prepaid. When shipping any instrument, make sure it is properly packaged for
complete protection.
WARRANTY