Watson-Marlow APEX10 - Manual (Page 33)

OPERATION
33
7.6 Fluid leakage
The APEX pump uses a lubricated rotor to compress
the hose. This means the pumphead must be filled with
sufficient lubricant during operation. This lubricant is
contained in the pump housing by the front cover and
by a dynamic seal on the back. The gearbox is filled
with gearbox lubricant.
Seal damage can occur due to normal wear in time, but
is seriously accelerated if the seal gets in contact with
contaminated lubricant. Thorough cleaning of the pump
housing after a hose failure and regular replacement of
the lubricant is strongly advised.
The pumphead and gearbox are directly coupled to
each other. A special feature is included in the
pumphead to allow early detection of seal damage of
the pump or gearbox.
This feature is called the leakage zone. Drops of
lubricant visible at the back of the pump indicate likely
seal failure. To avoid consequential damage, the pump
must be stopped and lubricant levels of the pumphead
and gearbox must be checked. The damaged seal
should be replaced.
Regularly inspect the pump for fluid
leakage.
WARNING
Risk of injury from falling! Process fluid
mixed with pump lubricant that is leaking
from the pump can make floors slippery.