Check The Control Transformer Setting; Electric Motor Fasteners For Secure Transportation - Gardner Denver L15 Original Operating Manual

7. Preparations for commissioning
7.3.1 Check the control transformer
setting
DANGER
High Voltage – Hazard of Shock, Burn, or
Death.
• The electrical connection should be
made by a qualified electrician.
• Only perform checks and carry out work
on the screw compressor when the unit
is out of operation, depressurized, and
secured from being switched on again!
NOTICE
Incorrectly setting the control transformer poses
a risk to the trouble-free operating of the
system.
Checking the setting of the control transformer
is part of commissioning and part of regular
inspection/maintenance because the supply
voltage can change.
The correct setting should be checked by
measuring the control transformerʼs output
voltage while the system is running with a load.
The control-power transformer is factory-preset to the
rated voltage. However, practice has shown that the
actual supply voltage often differs from this value.
Before first commissioning, set the measured supply
voltage on the control transformer. Fig. 11 illustrates an
example.
Following first commissioning, the setting of the control
transformer must be inspected while operating under
load and corrected where necessary. (see Section
10.10).
Fig. 11
28
7.4 Electric motor fasteners for secure
transportation
Fasteners used for securing the electric motor (-1- Fig.
12) during transportation must be removed prior to
commissioning.
To remove the fasteners, proceed as follows:
After the panel has been removed, support the
•
motor by screwing the belt adjusting bolt (-2- Fig. 12)
clockwise until it touches the motor.
Loosen the fastening screws (- 3 - and - 4 -Fig. 12)
•
and remove the fasteners
Check V-belt (- 5 -Fig. 12) is correctly placed in the
•
in V-belt pulleys
Screw the belt adjusting bolt back until it reaches
•
the lock nut (- 6 -Fig. 12) on the holder (- 7-Fig. 12);
securely fasten the motion screw (anti-clockwise)
Fig. 12