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If the system can be hard wired, the customer must provide an electrician to wire the cord end into the
electrical service outlet. A lockable electrical service disconnect switch must be installed if the system
is hard wired.
If the system is to be plugged into an electrical receptacle, the appropriate receptacle should already be
installed by the customer’s electrican. The installing engineer connects the plug to the end of the Ver-
saPulse Power Suite electrical cable.
3.3.2 Fan Speed Adjustment
The Fan Speed Controller PCB monitors and varies the speed of the fan in relation to the temperature of the
coolant. As the coolant temperature rises above a specified temperature, the fan speed will increase to bring
the temperature of the coolant to within a specified temperature range. When the temperature of the coolant is
at the proper temperature level, the fan speed will also decrease in speed (idle). The fan speed is monitored by
a Tachometer PCB.
1. Disable system autocalibration (SW3 to the left on the Controller PCB).
2. Turn the system on and let the system complete the self-test start up routine.
Allow the laser to operate at idle (no firing) in a temperature stable environment for 5 minutes.
3. Adjust R21 on the Fan Speed Controller PCB for -1.0 VDC as measured across TP5 and ground (TP7 or
TP8).
NOTE: The Fan Speed Controller PCB is located on the AC Control PCB between the K2 relay and the
T1 transformer.
4. Insert the Service Attenuator (slide SW4 on the Controller PCB to the left) in the beam path and attach
any test fiber.
5. Select the HIGHEST pulse rate in the User Mode and increase the pulse energy to maximum.
6. Fire the laser for a few minutes and verify that the fan speeds up when the voltage at TP5 reaches -2.0
VDC.
7. Stop firing and verify that the fan speed returns to idle speed and the voltage at TP5 returns to -1.0
VDC within a few minutes.
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