Knauer BlueShadow 40P, Instructions Manual, Page: 52 / 72

46 Maintenance and care
BlueShadow Pump 40P Instructions V7613
8. Maintenance and care
Maintenance of a HPLC instrument is critical to the success of analyses
and the reproducibility of results. If you require a maintenance task which
is not described here, contact your dealer or the Customer Support.
8.1 Maintenance contract
The following maintenance work on the device may only be performed
by KNAUER or a company authorized by KNAUER and is covered by a
sepa rate maintenance contract:
ƒ
Opening the device or removing housing parts
Electronic defect
Performing maintenance tasks on a switched on device can cause da-
mage to the device.

Switch off the device
 Pull the power plug.
Users may perform the following maintenance tasks themselves:
ƒ
Replacing the pump head
ƒ
Replacing the check valves of the pump head
8.2 Cleaning and caring for the device
All smooth surfaces of the device can be cleaned with a mild, commer-
cially available cleaning solution, or with isopropanol.
The keypad can be cleaned with isopropanol and wiped dry with a soft,
lint-free cloth.
Device defect
Intruding liquids can cause damage to the device.
 Place solvent bottles next to the device or in a solvent tray.
 Moisten the cleaning cloth only slightly.
8.3 Checking the fittings
Check if all fittings are tight. In case you find fittings that are not tight,
tighten them up. Note the torque applicable for each fitting in order to
not damage any components.
Material & size Pump head inlet Pump head outlet
Stainless steel 5 ml 7.5 Nm 10 Nm
Keypad