Watson-Marlow Qdos30 Universal - Manual (Page 3)

EN
Watson-Marlow qdos30 pumps product safety information 3
qdos30 is a positive displacement pump; therefore, it is recommended best practice
that customers incorporate discharge pressure relief in their piping system. Failure to
fit a pressure release valve in the discharge pipework will result in excessive build up
of pressure should the discharge become blocked. This may present a safety risk, may
cause damage to the system pipework or lead to premature failure of the pumphead.
The pressure relief valve shall be rated at no more than 10 bar. It shall always
be rated at below the users system maximum operating temperature. It shall be
installed so as to provide easy access for maintenance, inspection and repair. It shall
not be capable of being adjusted without the use of a tool. The discharge opening
must be located and directed so that the release material is not directed towards any
person and will not deposit on parts that could cause a hazard. There must not be a
shut-off valve between the overpressure safety device and the pump.
Do not block the drain port of the ReNu pumphead.
Ensure the chemicals to be pumped are compatible with the pumphead and the
pipework and fittings to be used with the pump. Please refer to the chemical
compatibility guide which can be found at: www.wmpg.com/chemical
If you need to use the pump with any other chemical please contact Watson-Marlow
to confirm compatibility.
3 Connecting to a power supply
This pump is fitted with a switch mode power supply and will operate from any mains voltage in the range
~100-240V 50/60Hz.
Make suitable connection to an earthed, single-phase mains electricity supply.
We recommend using commercially available supply voltage surge suppression where
there is excessive electrical noise.
Power cable: The pump is supplied fitted with a cable gland and approximately 2.8m (8.5ft) of power cable.
Each pump is supplied with a power cable. The plug connector at the pump end of the cable is IP66 rated.
The mains plug at the opposite end of the cable is NOT IP66 rated.
Ensure that all power supply cables are adequately rated for the equipment.
The pump must be positioned so that the disconnection device (the mains plug), is
easily accessible when the equipment is in use.
When PAT testing this unit ensure that the earth bond test terminal is used.
Earth bond test terminal position