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IOM_WPVBZ HE-WPVZ HE_401-1201-4002_208110_200901_EN
PACKAGED COMPACT VERTICAL
– WATER / AIR
WPVBZ HE / WPVZ HE
MAINTENANCE
REFRIGERANT CHARGE
The unit is delivered with a complete 407C refrigerant charge.
Add or recover the 407C refrigerant in a LIQUID state. Charging refrigerant in a gas state might create incorrect
mixing conditions.
Leaks should be repaired immediately.
Never overcharge the system.
Never use the compressor as a vacuum pump.
If leakage symptoms appear during operation proceed to a leak test.
A HCF detector is necessary in case of small leaks.
If a gas leak is detected proceed to removing and recuperating the entire refrigerant charge. Pressurize the system
with dry nitrogen. If no leak is detected proceed to vacuuming the system and refill with refrigerant.
Do not reintroduce the used refrigerant, send it to an authorized recycling plant.
Never use oxygen to pressurize the system or purge lines for leak test. Oxygen reacts violently with oil
which may entail an explosion that could lead to damages, personal injury or event death.
WARNING!
When proceeding to charging or recovering refrigerant, it is mandatory to make sure that water circulates
through the plate exchanger to avoid the risk of frost. If not, the exchanger plates may be damaged.
WARNING!
Should it be necessary to make brazing operation proceed previously to filling the circuit with dry nitrogen.
Burning refrigerant produces toxic gas emissions.
WARNING!