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Watson-Marlow 620DuN and 620Du User Manual 7
work. In the UK this person should also be familiar with the Health and Safety at
Work Act 1974.
There are moving parts inside the pumphead. Before opening the tool-
unlockable fixed guard (620R) or tool-unlockable track (620L), ensure that
the following safety directions are followed.
Ensure that the pump is isolated from the mains power.
Ensure that there is no pressure in the pipeline.
If a tube failure has occurred, ensure that any fluid in the pumphead has been
allowed to drain to a suitable vessel, container or drain.
Ensure that protective clothing and eye protection are worn if hazardous fluids
are pumped.
Primary operator protection from rotating parts of the pump is provided by the
pumphead fixed guard. Note that guards differ, depending on the type of
pumphead. See the pumphead sections of this manual: 29 and 33.
Secondary operator protection from rotating parts of the pump is provided by
indicator-only switching of the pumphead guard. This function will stop the
pump if the guard is inadvertently opened while the pump is running. For
details of permissible pumphead orientations, see the pumphead sections of
this manual: 29 and 33.
This pump must be used only for its intended purpose. The pump must be accessi-
ble at all times to facilitate operation and maintenance. Access points must not be
obstructed or blocked. The pump’s mains plug is the disconnecting device (for iso-
lating the motor drive from the mains supply in an emergency). Do not position the
pump so that it is difficult to disconnect the mains plug. Do not fit any devices to the
drive unit other than those tested and approved by Watson-Marlow. Doing so could
lead to injury to persons or damage to property for which no liability can be accept-
ed.
If hazardous fluids are to be pumped, safety procedures specific to the particular
fluid and application must be put in place to protect against injury to persons.
The exterior surfaces of the pump may get hot during operation. Do not take hold
of the pump while it is running. Let it cool after use before handling it.
No attempt should be made to run the drive without a pumphead fitted.
The pump weighs more than 18kg (the exact weight depends on model and pump-
head—see 8 Pump specifications). Lifting should be performed according to standard
Health and Safety guidelines. Finger recesses are built into the sides of the lower
shell for convenience in lifting; in addition, the pump can conveniently be lifted by
grasping the pumphead and (where fitted) the 620N module at the rear of the pump.
This product does not comply with the ATEX directive
and must not be used in explosive atmospheres.
Fundamental work with regard to lifting,
transportation, installation, starting-up,
maintenance and repair should be per-
formed by qualified personnel only. The unit must be isolated
from mains power while work is being carried out.