
4LPPT70EN - 5/2023
20
1. Obtain a clearance certificate for maintenance and
perform a lockout procedure. The pump must be
stopped with the rotor in the bottom most position and
turn the power off with the maintenance switch. The
rotating of the rotor is meant to be done with the crank
cam without electricity.
2. Remove the transparent maintenance window.
3. Discharge the lubricant from the pump via possible
drainage valve or, alternatively, by opening the front
cover. Protect yourself from splashes.
4. If the lubricant inside the pump was drained through
a drainage valve, open the front cover by removing its
fastening bolts.
5. With the front cover open, wash excess glycerine from
pump housing.
6. Release the hose compression to the 0% position
(read the instructions in Chapter 6.3
Adjusting the
hose compression
).
7. Remove piping connections on pump suction and
discharge.
8. Open the connection flanges of the piping on both sides
of the pump.
9. Remove the top of the hose from the pump housing by
pulling it vigorously outwards.
The hose can be removed despite the plastic hose guides
inside the housing (LPP-T65 and LPP-T80). Ensure that
the hose is not squeezed between the hose guides and the
rotating rotor during installation, as this may damage the
hose.
A hose change crank cam is included with the pump delivery
if the pump is delivered as a complete with gear and motor.
The crank cam makes it possible to do the hose changing
without electricity (excluding the special pump models). If
there is no crank cam included in your pump delivery, please
contact the authorized representative of Valmet Flow Control.