Watson-Marlow SPS 600 - Manual (Page 8)

Revision 4.1 / March 2014 8
5.2 Pump classification
The pumps are only designed for jobs lasting several days and are therefore assigned to the Device Group II – Application field “dust –
or gas – explosive areas”!
5.3 Zone classification
The Watson-Marlow MasoSine Pumps can be used in explosive areas of the zone 1 / 21. This corresponds to the category 2 G / D.
It is expressly forbidden to use the pump(s) in the zone 0!
5.4 Classification of the ex-atmospheres
A distinction is made between dust and gas explosive atmospheres. In the model code, the atmosphere is abbreviated with G (Gas) and
D (Dust). Watson-Marlow MasoSine Pumps are only designed for the explosive atmospheres G (Gas) and D (Dust)!
5.5 Ignition protection
Our pumps are subject to ignition protection "c" constructive safety according to the standard for "non-electric appliances for use in
explosion-risk areas" EN 13463-5
5.6 Temperature classes
- EX II 2 G c T4
- EX II 2 D c T=120°C
5.7 Limit values for the pump
The limit values for the pump (max. speed, max. pressure, max. temperature) are stated in the delivery note. These limit values must
never be exceeded under any circumstances! This applies in particular when using a frequency converter.
If the pumps are supplied without a drive, the following values apply!
SPS 600
max. Druck * 15 bar
max. Drehzahl * 600 UpM
max. Temperatur (T4) * 60°C
max. Temperatur (T3) * 120°C
Umgebungstemperatur -12°C bis +40°C
5.8 Grounding the pump
All supplied pumps are equipped with a grounding option.
In particular in ex-areas, the pump must be grounded by fixing a grounding cable to the corresponding position (see diagram).
In addition to the grounding of the pump, the motor also needs to be grounded! If the drive is not grounded, the pump aggregate may
not be operated.
5.9 Material properties
Plastic parts that are fitted inside the pump react more to temperature changes that stainless steel parts. For this reason, the specified
maximum medium temperature (Tm=100°C), for which the pump is designed, may not be exceeded. If the specified temperature is
exceeded, this may cause a linear expansion and may block single components; this in turn could cause the pump to fail or could result
in damage to parts of the pump. Also, excessive temperatures can accelerate the wear of dynamic parts and therefore reduce the
lifespan of the plastic parts.
Corrosion may occur to the Power Frame of the pump if the paintwork is damaged. Corrosion represents a hazard for the use of pumps
in explosive areas (for measures, see Troubleshooting Chap. 21).
5.10 Pressure Conditions
To avoid any over-pressure in the pump as a result of a closed pressure line, a pressure controller must be installed.
Grounding