MAX POWER
All wire ends for terminals should be tinned before inserting into terminal blocks.
The control system of the RETRACT requires 30 amps of stabilised 24 v dc power.
If you are installing an EHP system you must use a
different battery supply
than
that used for the EHP power.
The 24 volt input power is automatically transformed to produce 12 volts for the
control panel use
control panel only
.
The major power consuming components of the RETRACTS electrical system (the
raise/lower unit, the directional valve solenoids, and the electromagnetic clutch, or
power relays if EHP) are supplied with 24 volts from the control box.
Switching the thruster system on is achieved by a two-pole 32-amp circuit breaker
(not supplied by Max Power) which should normally be located on the main electrical
panel.
Power system wiring
(EHP only)
The same criteria’s as mentioned above applies. The electrical power cables must be
off a sufficient size (see diagram) and should be connected directly from the batteries
to the fuse ,main breaker, the power relays and finally the EHP.
There should be
no other equipment
or connections in the circuit. ( Use conductive
grease on the cable connections)
Cables that are specified larger than is possible to fit into the terminal blocks should
be thinned back and tinned to fit. They should not be forced into the terminal blocks.
Note
: the Electro-pump does not have a specific polarity.
The supply cable diameter (area section) should be sufficient so that the voltage drop
between battery and motor is no greater than 2 volts for a 24 volts supply.
Always make your cable runs as short as possible
The most commonly found errors on EHP installations are voltage drop related
Excessive voltage drop will cause,
low performance, over heating ,and
unreliability of power relays .
Optional equipment
An extra relay can be added on the negative battery wire and is controlled by
terminals 31 & 32 (same as the positive relay). This option is highly recommended in
aluminium , steel ,carbon fibber hulled vessels.
10
INSTALLATION MANUAL RETRACT R 300
