Danfoss Turbocor TT-300, Service Manual

Page: 38 / 132

38 of 132 M-SV-001-EN Rev.E
Compressor Components
The compressor requires a 3-phase power source
with UL-approved or CE-approved components
in circuit with code-compliant protection.
1. Isolate compressor power.
2. Ensure the AC cables are securely fastened to
the input terminal block.
3. If the cables cannot be securely fastened to the
input terminal, the terminal block is damaged
and needs to be replaced.
1. Turn ON the AC input power.
2. Set the multimeter for AC voltage
measurements.
3. Place the meter probe on one phase of the
AC input terminals and the other meter probe
on another phase of the AC input terminals as
shown in Figure 26 (Measuring the AC Input
Voltage on the AC Input Terminals) and Figure 27
(Measuring 3-Phase AC Input). Repeat for all AC
input terminals. Repeat on load side of the fuses
(TT300/TG230 only).
4. Verify that the meter shows the expected AC
measurement within the range as indicated in
Table 9 (Expected AC Voltage Range). The acceptable AC input voltage range is +/-10% of
the nameplate AC input voltage.
3.3.3 Verification
3.3.3.1 3-Phase AC Input
Verification
3.3.3.2 Connecting the
AC Input Cable
3.3.3.3 Verifying the
3-Phase AC Input
• • • DANGER • • •
This equipment contains hazardous voltages that can cause injury or death. Exercise extreme caution when working on energized
circuits.
• • • DANGER • • •
Always wear safety glasses when working around components energized by high voltage. Faulty components can explode and
cause serious eye injuries.
Figure 26 - Measuring the
AC Input Voltage on the AC
Input Terminals
Figure 27 - Measuring
3-Phase AC Input (TT300/
TG230 Only)