Digital toggle switch control operation
3 - 2
Before Operating the Load Bank
Ensure that:
•
The load bank has been setup according to the instructions and safety warnings in
Chapter Two.
•
The external supply (for fans and controls) is connected according to the instructions
in Chapter Two.
•
The supply under test is connected according to the instructions in Chapter Two.
Safety warning
Do not attempt to operate the load until you have read and understood this manual. Misuse
could result in serious injury and damage to the equipment.
•
Keep all personnel who are not directly involved with testing the supply well away from
the load bank and from the equipment under test.
•
The discharge air can be very hot and can cause serious burns. Do not touch the outlet
grille while the load bank is running, or for a few minutes afterwards.
•
Only operate the load bank with all the guards in place and with all of the covers and
protective screens securely in position.
•
Ensure that there is no risk of the hot discharge air re-circulating back to the air inlet
of the load bank, extensive damage is possible due to re-circulating the cooling air.
•
Ensure that there is no loose paper, plastic bags, or other debris that could be drawn
in to the air inlet, or any combustible material left within range of the air discharge.
•
After removing the load at the end of a test allow the fan to run for three minutes to
dissipate the residual heat.
3 - 3
Turning the load bank on and off
The load bank provides a method of quickly starting and shutting down the load bank:
The Fan and Controls Supply Isolator.
This is a two position switch which isolates the
power supply to the fan and controls when it is in the off switch. It can be used to perform
an emergency stop, but it can also be padlocked in the off position and this means it can
be used to secure the load bank from unauthorised operation.
Figure 3-1
The Fan and Controls Supply Isolator
Fan and
Internal
Warning!
Isolator for fan
and controls supply only.
Other supplies may enter this load
bank. Isolate all before working on
this equipment.
Chapter Three
Warning! Operating
the Fan and Controls
Supply Isolator or Stop
Button does not isolate
the Supply-on-Test
from the load bank
wiring. Some of circuits
within the load bank will
remain live.
