Sorvall TC6, Service Manual

Page: 17 / 109

Installation and Operation SORVALL

Centrifuges
2-2
2-3. Electrical Requirements
The centrifuge has specific power requirements and must be
connected to the correct power supply for proper performance. The
nameplate on the back of the centrifuge specifies one of the following:
100 - 120 Vac, 60 Hz, single phase, 3/15 amps*
220 - 240 Vac, 50 Hz, single phase, 2 amp*
Check line voltage with a voltmeter. Then, verify that the voltage
indicated on the nameplate on the back of the centrifuge agrees
with the measured line voltage.
If the line voltage is beyond the
±
10% tolerance (of nominal) given,
the result can be variations in the performance specifications and
damage to the centrifuge.
The power cord has a keyed plug that inserts into a receptacle at the
back of the centrifuge. The other end of the power cord has a three-
prong molded cap with a ground pin and parallel blades. (60 Hz
instruments require receptacle NEMA 5-15R and 50 Hz instruments
require NEMA 6-15 R.).
For connection to other receptacles, the power cord may have to be
replaced. Follow local electrical regulations.
Check that the gound lug of the electrical plug is properly grounded
and is shorted to the frame of the centrifuge.
2-4. Voltage Selection
(SN 9501733 and Below)
The voltage is set by the voltage selector (in the fuse block) located
in the power connector on the back of the TC6
® (refer to figure 2-1
for SN 9501733 and below). The current voltage setting (100, 110**,
220, or 240) is displayed in the window of the fuse block.
To change the voltage:
1. Unplug the power cord from the wall receptacle and from the
power connector.
2. Squeeze the two tabs located on either side of the fuse block and
carefully remove the fuse block from the power connector.
NOTE
Voltage can only be changed on instruments with serial
numbers 9501733 and below. Instruments with serial
numbers 9501734 and above must be ordered prewired
for specific voltages.
!
C A U T I O N
If the power cord is
connected to the wrong voltage, it
can cause damage to the centrifuge.
Check the voltage listed on the
nameplate before plugging the power
cord into the power source. Sorvall is
not responsible for incorrect
installation.
*CSA and UL Certified.
**For 120 V operation, the voltage selector is set to 110.