VWR Puranity TU 12 UV+, Instruction Manual

Page: 73 / 84

VWR Puranity TU+ |
65
Trouble shooting
NOTE!
Contact the service department if you cannot rectify this error.
Error Cause Remedy
The system does not start No supply of power
Power pack or system control
defect
Provide power
Replace the power pack or
system control
Dispensing not possible/ storage
tank is empty Feedwater supply is closed
Feedwater and concentrate
water connections are mixed
up
Feedwater pressure < 1 bar
Sterile filter blocked
RO/pretreatment cartridge
blocked.
Open the feedwater supply line
Replace connections
Increase feedwater pressure
Replace the sterile filter (see
“Replacing the 0.2 µm final
filter” on page 61)
Install new RO/pretreatment
cartridge (see “Replacing the
RO/pretreatment” on page 52
or check RO/pretreatment
cartridge connections.
Resistance < 18.2 M
Ω
·cm/ 0.055
µS/cm
Ultrapure cartridge is
exhausted
Air in the ultrafilter because of
empty tank
Check feedwater quality
Insert new ultrapure cartridge
Wait until the tank is again
filled and a rinse is triggered
Control panel non responsive Microprocessor locked up
PCB error
Unplug the mains plug for 5
seconds.
Contact the VWR service
department