Valdemar V1 Series, Operating Instructions Manual

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Maintenance
The EVI DC Inverter air source heat pump unit is highly automation device. If the units are cared and
maintained effectively regularly , the operation reliability and the lifetime of the unit will be highly
improved.
Important tips below shall be paid more attention to when doing the maintenance:
1. The water filter shall be cleaned termly, to make sure the water is clean, and avoid any damage
caused by the filter blockage.
2. All the safety protection device set up already before leaving the factory, forbid to adjust by oneself.
We could not take any responsibility for any unit damage caused by the user’s self-adjustment.
3. The surrounding of the unit shall be clean, dry and draughty. If the side of the heat exchanger could be
cleaned termly(every 1-2 month), the heat exchanging efficiency will be better, and energy saving.
4. The water supplement of water system and air discharge device shall be checked frequently, to avoid
the air to enter the system, causing the water circulation decrease, or the water cycle trouble, or it will
effect the unit’s cooling, heating efficiency and the working reliability .
6. 5. The power of the unit and the electrical wiring shall be checked frequently, make sure the wiring is
fastened and the electrical component is normal. If abnormal, it shall be repaired or replaced, the unit
shall be connected to the ground reliably.
7. Check every components during the unit operation frequently. Check whether the working pressure of
cooling system is normal or not. Check the pipe splice and the air injection valve whether have greasy
dirt. Make sure not any refrigerant leakage in the cooling system.
7. Don’t stack any sundries around the unit, in case blocking the air inlet and outlet. The surrounding of
the unit shall keep clean, dry and draughty.
8. The water in the water system shall be discharged if the unit need to take a long break after running
for a period. And the power shall be off, put a cover on the unit. Only after the water system is
replenished full with water and the unit is checked roundly, and the unit is power on to warm up for at
lease 6 hours, all is fine, then the unit could be started up again.
Notice:
The unit should be equipped with the dedicated power supply. The voltage range should be within ±10%.
The switch should be automatic air switch. The setting electric current should be 1.5 times of the running
current, and equipped with lack of phase safeguard. The knife switch is forbidden to use in the unit.
The unit must be power on to warm up for at lease 12 hours before running every season. If the cooling
only models haven’t been working for long term in winter, make sure to discharge out all the water, in
case the pipe and the unit are damaged by frost. The master controller and the unit should be in
correspondence and couldn’t be power off if the heating only models stop working for long term in winter,
to avoid the frost damage.
The heat pump switch couldn’t be operated frequently, can not be over 4 times within one hour. The
electric cabinet shall prevent to be affected with damp.
Forbid to flush the EVI DC inverter air source heat pump with water, avoid any electric shock or other
accidents.