Midtronics psc-700, Instruction Manual, Page: 15 / 16

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POWER CHARGE ™ PSC-700
Do not replace the converter unless the following checks have been performed:
1. Loosen the screw on the positive terminal and disconnect the positive
wire. Read the converter output voltage using a DC voltmeter. If the volt-
age is above 14 volts, the converter is working properly.
2. If the converter output is zero volts, use an AC voltmeter to check for prop-
er voltage at the 120 VAC outlet that the converter is plugged into. This
voltage should be between 105 and 130 volts.
3. Check the fuses located at the front of the converter. These fuses will only
blow if the battery or output leads were connected in reverse, even for a
moment. Replace the fuses and repeat step 1.
NOTE: When replacing fuse(s) the TCMS plug must be removed to
provide clearance for fuse replacement.
Frequently Asked Questions
Q: Why isn’t the PSC
providing 70 amps?
A: The PSC is voltage limited at 14.4V. The
PSC will provide enough current, up to 70
amps, to keep the voltage at 14.4V. The
PSC will not charge at the full 70 amps if the
battery will not accept that much current.
Q: Why is the voltage
lower than 14.4V?
A: The maximum current is 70 amps. If the
load and battery charge current requirement
exceeds 70 amps it may depress the
voltage.
Q: What can reduce the
power output of the
PSC?
A: Using an extension cord that is not
commercial grade (12 gage).
The circuit that you are plugged into has large
parallel loads.
Q: Why won’t the fan
on the PSC run?
A: The fan is temperature controlled and
variable speed based on the temperature.
The fan also has what is called a “soft start”
which is part of the variable speed control.