SAINT-GOBAIN MDP 50, Operating Instructions Manual

Page: 4 / 8

3/7
•
The pump is not damaged. If there are signs of damage you should report this immediately your
local distributor.
• The parts and operating instructions are included in the carton with the pump.
III – Installation and Operation
III.1 – Testing
All pumps are factory tested in our clean room for:
• Maximum and minimum stroke
• Delivery pressure and suction head
•
Dispense speed
•
Repeatability
•
No liquid or air leaks
III.2 – Set up
The pump must be
positioned on its feet on a horizontal support , as shown on the general
arrangement drawing. If not, the pump body will not fill properly.
III.3 – Connections
III.3.1 – Air/nitrogen connections
Air/nitrogen must be dry, non-lubricated, filtrated 20µ or less.
Pressure range is 50-70 psi (3, 4-4, 8 bar).
Air line must be connected to actuation pressure port indicated in the drawing below.
Thread connection is 1/8”BSPT.
Drawing at the end of the manual describes a typical pneumatic installation.
Unidirectional valve is to control the speed of the suction cycle. The integrated check valve is for a
quick release of the pressure during the discharge cycle.
3/2 way valve is necessary for the on/off cycle of the pump.
When the 3/2 valve is actuated it is the suction cycle.
When the 3/2 valve is not actuated it is the discharge cycle.
Pressure regulator is to setup the right pressure.
Filter : If the air/nitrogen of the main line is not filtered, it is necessary to install a filter to protect the
pneumatic actuator of the pump
III.3.2 – Fluid connections
The pump is self-priming. An arrow located on the pump's body shows the fluid direction. The inlet is
and the outlet has 1/4" Flare Grip II connexions.
III.3 – Initial tests and adjustments
Before commissioning the pump, we recommend testing it dry with a supply pressure of 58 psig (4
bar) to ensure the system works correctly.
Before using the pump with chemicals please check:
•
Pump is correctly fixed on the support : the base of the pump must be screwed on the support
•
The air/nitrogen supply is between 50-70 psi (3,4-4,8 bar),
• The inlet and outlet fluid connections are correctly fitted and tight.