Electrical System - Pentax HPV Operating Instructions Manual

3 INSTALLATION
.
3.2 LUBRICATION
Bearings lubricated with oil.
The support must be filled with one of the following types of oil:
- AGIP : ACER 46
- ESSO Teresso 68
- MOBIL D.TE Oil Medium
- SHELL Tellus 68
FILLING WITH OIL
the
the
Through breather cap, pour oil until it reaches the level of the sight
glass and stabilises at that level.
Close the filling cap again.

3.3 ELECTRICAL SYSTEM

ATTENTION!
Connection to the motor and relevant electrical installation must be per-
formed by a skilled electrical technician in compliance with electrical
standards in force.
CONNECTION DIAGRAM FOR THREE-PHASE MOTORS PROVIDED
Connection operations must be performed with no electrical volt-
FOR STARTING:
age.
THREE-PHASE LINE - HIGHER CONNECTION VOLTAGE
Ensure the power supply voltage matches that set out on the motor plate.
(star)
The connecting cable must be sized based on motor absorption and ca-
CONNECTION:
ble length (refer to the motor plate).
THREE-PHASE MOTORS
For motors of power greater than 7.5 KW it is good practice to provide star-
delta start-up.
Check the type of connection set out in the electrical motor plate. The con-
nection varies depending on the type of motor winding and voltage.
Ensure the terminals of the electrical box are connected according to the cor-
rect diagram (Fig. 9).
ATTENTION!
Always perform earthing connection. The motor crankcase must be earthed
THREE-PHASE LINE - LOWER CONNECTION VOLTAGE
via the suitable connection.
Check resistance to insulation before commissioning.
(delta)
CONNECTION:
The
motor must always be protected from overloads by a thermal breaker
installed downstream of the cut-out switch calibrated to a tripping current not
exceeding 1.15 times the motor's rated current.
It will be the technician's duty and responsibility to perform final electrical test-
ing set out by the standards and, upon completing them, issue the certificate
of conformity concerning the electrical system.
Fig.9
8