Blue display keyboard H2 – code: FH2KT – HP Watermakers

The Blue display keyboard H2 HP Watermakers (code FH2KT) is the original digital user interface designed for the management and monitoring of the brand's automatic marine desalination units. It is a central component for the plant's operation: it allows the operator to interact with the control logic and to consult the information displayed on the screen, directly from the command point on board.

In maintenance and spare parts contexts, the FH2KT keyboard/display is recommended when full functionality of the control panel needs to be restored or when it is necessary to replace a damaged, worn, or no longer readable unit. Being a spare part identified by the manufacturer, it is particularly useful for targeted interventions on HP Watermakers systems equipped with automatic regulation electronics.

Spare part features and details

The keyboard FH2KT allows interfacing with the desalination unit's logic board through a dedicated data connection. Operation takes place via a blue backlit alphanumeric LCD display and a membrane keyboard, designed for menu navigation and management of the main functions.

Identifying data

• Spare part code: FH2KT (identified as 152A / 153A in the technical workshop diagrams)
• Manufacturer/Supplier: HP High Pressure S.r.l. / HP Watermakers
• Type: keyboard with blue backlit LCD display

Main available controls

• Start
• Stop
• Reset
• Menu navigation

Compatibility and system integration

The FH2KT display/keyboard is suitable for automatic systems HP Watermakers series HP UC, HP SC and HP V equipped with valve RP TRONIC®. Communication to the main electrical box/PLC is done via dedicated serial data cable.

Functions managed on the display

Through the FH2KT panel, it is possible to consult and manage various operational and service information of the system. Available functions depend on the system configuration and installed control logic.

• Pressure monitoring: display of the system's operating pressure.
• Water quality (TDS): control of the conductivity value of the produced permeate and management of the diversion valve intervention in case of parameters not conforming to system settings.
• Diagnostics and alarms: textual indications of anomalies and operational signals (for example pressure conditions, absence of flow, maintenance recalls related to filters).
• Production counting: reading of production and consultation of the total production history (according to the plant logic).
• Maintenance and cycle management: access to service functions such as hour counters, automatic membrane washing cycles (flushing) and temporary preservation systems (AMCS), if present and enabled on the plant.

Typical applications (nautical and onboard plant engineering)

This spare part is intended for contexts where a reliable interface is required for the daily use of the desalinator and for control activities during navigation or anchorage/port stay. In particular, the FH2KT keyboard/display is commonly used in:

• Corrective maintenance on panels with unreadable display or non-functioning keys
• Restoration of operability after faults or damage to the control panel
• Revamping interventions on HP Watermakers plants with PLC logic and automatic regulation electronics
• Technical Assistance and spare parts for fleets, shipyards and nautical services

Advantages for spare parts and assistance

• Replacement identified: the FH2KT code allows easier procurement and orderly management of spare parts.
• Complete interface: a single component for parameter consultation, menu navigation and main commands.
• Diagnostic support: the textual display of states and alarms helps in operational checks and maintenance activities.
• Integration with automatic systems: designed for HP Watermakers systems with automatic management and RP TRONIC® valve.

Usage and important notes

Historical and compatibility note

The display FH2KT is the standard introduced by HP Watermakers starting from 2018 and replaces the previous generation of displays called HP03 (used by 2003 at 2018). In case of repair or revamping on machines prior to 2018, FH2KT is indicated as a direct evolved replacement; however, the check the firmware version of the EPROM chip installed on the main PLC to ensure proper communication of protocols may be necessary.

Tips for identification and replacement

• Check the code reported in the technical documentation or in the exploded views (references 152A / 153A) before ordering.
• Check the plant series (HP UC, HP SC, HP V) and the presence of the RP TRONIC® valve.
• Evaluate firmware compatibility in case of upgrade from HP03 display, especially on plants prior to 2018.
• Installation: for interventions on onboard electrical/electronic components, it is recommended to be performed by qualified personnel, following the manufacturer's procedures.

For a correct selection of the replacement part, it is useful to have the plant model, approximate year, and references of the HP Watermakers technical documentation available.

FAQ – Frequently Asked Questions

What is the spare part code for the Blue Display Keyboard H2?

The product code of the replacement part is FH2KT. In the workshop technical exploded views, it may also be indicated as 152A / 153A.

On which HP Watermakers systems is the FH2KT keyboard/display indicated?

It is indicated for automatic HP UC, HP SC, and HP V plants equipped with RP TRONIC® valve.

What type of display does the FH2KT keyboard have?

It is an alphanumeric LCD display with blue backlighting.

Does the FH2KT replace the old HP03 display?

Yes. The FH2KT is the standard introduced in 2018 and replaces the previous HP03 generation (used from 2003 to 2018).

Is any special check required on systems prior to 2018?

In case of revamping or repair on machines prior to 2018, it may be necessary to verify the firmware version of the EPROM chip on the main PLC to ensure proper communication.