Synthetic oil (MOLYGUARD GEAR SINT EP 320):
• ISO VG 320
• U.S. Steel 224,222,223
• DIN 51517, part 3 CLP
• SEB 181 226
• AGMA 250.04 (EP gear oils), AGMA 9005-D94 (EP gear oils)
Quantity of oil to be inserted in the pump body
N.B.: for maintenance and the filling of oil chambers for the various types of hydraulic diaphragm pumps,
B – BR - SD type, refer to the chapter on pump head maintenance.
10 - ELECTRICAL CONNECTION
The installer must provide an adequate electric line cut-out switch upstream of the pump and use cables
with a sufficient cross-section to support the maximum current absorbed by the motor.
Suitable devices must be installed with a delayed trip to protect against overheating in case of a blocked
rotor, as prescribed by Standard EN 60079-14.
Connections, commissioning, maintenance, measurements and adjustments of the electric equipment or
of its components must be carried out only by qualified personnel (electrical maintenance technicians).
Comply with the relative standards in force to perform work on live parts.
10.1 - Motor connection
Before connecting the motor, consult the instructions contained on the terminal board and verify that:
• Voltage and frequency of the power supply line correspond to those indicated on the motor rating
plate.
• The earth terminal is connected to the protective conductor.
• The motor rotation direction corresponds to the direction of the arrow placed on the fan
cover.
• Being close to obstacles does not block correct motor ventilation and make maintenance and
inspection operations difficult.
Specialised personnel must carry out the electrical connection with the utmost caution, with a
voltage-free mains supply and in compliance with safety regulations. It is essential to connect the
pump to an efficient and controlled earthing line.
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