ACF60-00 – Installation, User’s and Maintenance Manual
38
Ed. 04/2012
2.6 PROLONGED INACTIVITY
When the ACF is expected to be inactive for a long period of time, it is best to
follow the shutdown and eventual start-up indications reported below.
Shutdown for extended period of time
Requirements:
The ACF must be powered and running.
To shut down the ACF for a long period of inactivity, proceed as follows:
1.
Turn off the ACF from the control switch and not from the main power switch.
2.
Wait for the shutdown cycle to complete (approximately 7 minutes).
3.
Shut off the ACF through the main power switch.
4.
Close the gas supply valve.
In case of winter saesonal switch-off or long period of stopping, we suggest to not
empty the hydraulic circuit: in that case possible oxidation process can occur.This
oxidation process could damage both the hydraulic system and also the Robur heat
pump.It’s important to verify that no leakages occur in the hydraulic circuit that may
empty part of the system. The above recommendation is necessary in order to
avoid to fill continuously with water that may imply the additional introduction of
oxygen and the consequent dilution of the used inhibitor, for ex glycol. In case of
precence of glycol, Robur advices to use inhibited glycol. Galvanized pipes are not
recommended, as they are not compatible with glycol.
ACF start-up after an extended period of inactivity
Requirements:
The ACF must be off, with no supply of gas or electricity.
To start up the ACF after a long period of inactivity (i.e. after winter), proceed as follows:
Warning: before beginning any start-up operations on the ACF, make sure that the
water system is completely filled, and that the water contains the correct
percentage of antifreeze according to the model and climatic zone of where the
appliance is installed, as described in Table 22 on page 49.
1.
Pressurize the appliance, adjusting the water pressure so that it is between 1 and 2
bar. If you are unsure of how to perform this operation, contact the plumber who
installed the unit.
2.
Power up the ACF by closing the contacts on the main power switch (ON).
3.
Open the gas supply valve.
4.
Check that the water system has the correct flow rate and pressure.
5.
Turn on the ACF from the control switch.
For further information about the control switch, go to “COMMISSIONING (AND
SHUTDOWN) OF THE ACF” on page 29.
Summary of Contents for GA ACF60-00
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