TECNICOMAR MINIMAR PLUS - Special procedures; 6.1 System normal operation.; 6.2 Emergency operation

Instructions for the installation, use and maintenance of Tecnicomar watermaker
6-20
6 Special procedures
6.1 System normal operation.
The watermaker electric box checks continuosly the system operation. The watermaker does not represent any risk for
the user since the electric box automatically checks, by the appropriate sensors, the equipment correct operation.
However the system can operate also in EMERGENCY conditions. In this operation mode the electric box cannot shut
down the system anyway even in case of danger.
It is extremely IMPORTANT that the watermaker is operated in emergency mode only by
personnel trained in matters of electricity. It is also advisable that during the
EMERGENCY operation nobody stay near the watermaker because an unexpected rise
of pressure may cause hosings or fittings explosion. The EMERGENCY STOP breaker is
always active and the system can be powered down at any time by using this switch (the
emergency stop pushbutton is installed on the control panel and is identified by its
mushroom form, red color and the EMERGENCY text).
6.2 Emergency operation
WARNING: HIGH VOLTAGE SHOCK RISK!
DO NOT CARRY OUT THE OPERATIONS DESCRIBED BELOW WITH WET HANDS. DO
NOT TOUCH THE INSIDE PARTS OF THE ELECTRIC BOX.
If there is a problem on the electric box, the system can be operated in EMERGENCY conditions, without the support
of automatic electronic controls. This mode of operation is normally not recommended. Only in cases of extreme
necessity and strictly following the instructions given below it is possible to operate the system.
In case of automatic pressure regulator device
 Open the sea water inlet valve (A2).
 Switch off the power supply.
 Turn the selector automatic/manual located onto the motorized valve
(I) in “manual” position (when the unit is off).
 Remove the electric box front panel by unscrewing the four plastic
bolts.
 Using an insulated-handle screwdriver bring the switch S1 (fig. 5) in
the ON position.
 Using an insulated-handle screwdriver bring the switch S2 (fig. 5) in
the ON position.
 Close the electric box front panel by screwing the four bolts.
 Switch on the power supply.
 Check that the low pressure be at least 0.5 bar.
 Check the system and be sure that the minimum pressure does not
fall below the operating minimum value and that the maximum
value does not exceed 60 bar (850 psi).
 In case of danger shut down the system using the emergency stop
pushbutton.
 Operate manually the three-way solenoid valve (N) by pressing and
turning the pushbutton on the valve (N1) counterclockwise (fig. 6).
Figure 5 - S1 and S2 switches in emergency
Figure 6 - three-way solenoid valve