Test Points, Maintenance And Troubleshooting; Checklist Prior To Commissioning - Dimplex LAK 3IMR Installation And Operating Instruction

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8 Test points,
maintenance and
troubleshooting
If no faults have occurred here by this point, the unit can now be
operated and you can enjoy the benefits of the LAK split heat
pump.

8.1 Checklist prior to commissioning

ATTENTION!
Before opening the unit, ensure that all electric circuits are isolated from
the power supply.
Pos. Category
1
2
Current
3
4
5
6
7 Water pressure
8
11
Installing the unit
12
EN-14
Before commissioning the unit, run through the test points out-
lined in this chapter.
You will also find instructions for maintenance and troubleshoot-
ing here.
Components

All switches with contacts with different polarities should be connected se-
Field wiring
curely in accordance with the specified directives or laws.

Cable connections should only by made by trained specialist personnel.

Cable connections and electrical components available separately should
comply with European and local directives.

Cable connections should be made in accordance with the circuit diagram pro-
vided with this unit.

A circuit breaker (earth leakage breaker) with 30 mA should be installed.
Circuit breakers

The circuit breaker in the control cabinet of the indoor unit should be switched
on before the unit is commissioned.

An earthing wire should be connected. Never connect an earthing wire to a gas
Earthing
pipe, water piping, a metal object of the building, a surge protection socket or
similar.

Use a separate mains cable.
Power supply unit

Cable connections of the Connections on the terminal panel (in the control cabinet of the indoor unit)
terminal panel
should be fixed in place securely enough.

After filling with water, the pressure gauge should show a pressure of 1.0 to 1.5
Filling pressure
bar. The maximum pressure should not exceed 3.0 bar.

While filling with water, the system should be purged via the purging hole.

If no water comes out after pressing on the tip (on the top side of the opening),
the purging process is not yet complete.
Purging

If the system has been purged optimally, water sprays out like a fountain when
pressing on the tip. Take care when testing the purging. Water could spray on
your clothes.

The isolating valves (on-site) should be open.
Isolating valve

There should be no visibly damaged components in the indoor unit.
Maintenance of compo-
nents

Refrigerant leaks reduce the output of the unit. In the event of leaks, please in-
Refrigerant leak
form an authorised after-sales service partner.
452162.66.09 · FD 9703
LAK 3IMR - LAK 14ITR
Test point
www.dimplex.de