13
KI-OM-6768 R0
Chapter 2
2.1.3 Electrical
Installation
The electrical requirements of the system are 460 VAC
20 V and 60 Hz. The power supply cable
installed should be capable of handling 315A as the unit is fitted with a 315A isolator. Supply cable
should be a suitably rated armoured cable, to an approved marine standard specification.
The mains power input to the system should be fitted to the bottom right hand side of the stainless
steel electrical enclosure. The mains power cable should be installed through a suitable gland and
correctly grounded to the armour. Mains cable connections to the isolator terminals must be
tightened and checked.
After the mains power cable is installed, check for acceptable grounding and continuity. Do not start
up the system until these tests have been conducted.
2.2 I
NITIAL
S
YSTEM
C
HECK
The following initial system checks should be conducted to ensure that the WHE-3 and remote
control panel are in good working order and the unit is correctly set up for operation.
2.2.1
Fluid System Priming Procedure
After the electrical and pipe work installations have been completed, purge the piping system of air
in order for the pumps to function properly and for the electric heater elements to be fully immersed.
Use the following procedure to correctly prime the system:
1.
Open the salt or fresh water input valve slightly to allow water to flow into the system. Water
supply should be at sufficient pressure (3 bar minimum).
2.
Check that all the ball valves on the filters are open.
3.
With the vent valve on top of the level control tank open, leave the water supply on until water
flows out of the vent tube.
4.
Close the vent valve and wait for water to flow through the pump and out of the HP water
outlet fitting.
5.
Allow the water to run for 5 to 10 minutes in this mode.
6.
Confirm that the heater tank is full by opening the tank vent valve to purge any residual
bubbles in the heater tank.
D
ANGER
POWER CONNECTION
Ensure that the power supply is turned off before connecting any
wiring.
C
AUTION
LOW WATER LEVEL OPERATION
The equipment may be severely damaged if heaters are supplied
with power when there is no water in the system.
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