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14 Constant Running Hydraulic Pump - Installation Guide
Figure 6: CR pump connections to a Type 150/400 course computer
Connecting to Type 100/300 course computer
When installing the CR pump with a Type 100/300 course computer
we recommend using a Raymarine constant running (CR) interface
(part number: M81129).
Connecting the CR interface
Run cables from the main power supply to:
• the motor on the CR pump
• the CR interface and then onto the course computer power
connections
Install a suitable circuit breaker in the power supply to the complete
system (as specified in the core pack installation guide).
Note: It is important to use the correct cable size for the length of
cable run between the pump and the power supply (see Table 2).
The CR interface unit has connections for the solenoid valves (on the
CR pump) and a bypass valve (if fitting to a mechanical steering
system):
• connect the solenoid valves to the CR interface as shown in
Figure 7, using at least 16 AWG (1.5 mm
2
) cable.
+–
A
B
–
–
–
MOTORPOWER
O
FF
SW
ITCH
SO
LEN
O
ID
CLU
TCH
+
To bypass valve
(if required)
Solenoid 'A' cable
Motor supply
CR1 (12V) - 50A
CR1 (24V) - 30A
CR2 (12V) - 70A
CR2 (24V) - 40A
D5189-2
Course computer
connections
Solenoid 'B' cable
CR pump
To boat's battery
Fuse
Circuit
breaker