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Commissioning
CAUTION! Wear personal protective clothing such as goggles and
protective gloves!
Make sure that the suction and pressure line shut-off valves are open.
With the compressor switched off, add the liquid refrigerant directly to the condenser or receiver,
breaking the vacuum.
Pay attention to adequate refrigerant fill before starting up the compressor.
During operation, refrigerant must be free of bubbles in sight glasses 1 and 2 of the liquid
subcooler.
If the refrigerant needs topping up after starting the compressor, it can be topped up in vapour
form on the suction side, or, taking suitable precautions, also in liquid form at the inlet to the
evaporator.
7.5 Refrigerant charge
7.6 Start-up
WARNING! Ensure that both shut-off valves are open before starting the
compressor!
Check that the safety and protection devices (pressure switch, motor protection, electrical con
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tact protection measures, etc.) are functioning properly.
Switch on the compressor and let it run for at least 10 minutes.
Check the
oil level
: The oil must be visible in the sight glass.
ATTENTION! If larger quantities of oil have to be topped up, there is a risk of oil
impact effects. If this is the case, check the oil return!
INFO!
Avoid overfilling the system with refrigerant!
In order to prevent shifts in concentration, zeotropic refrigerant
blends (e.g. R407C) must always only be added to the refrigerating
system in liquid form.
Do not pour liquid refrigerant through the suction line shut-off val
-
ve on the compressor.
It is not permissible to mix additives with the oil and refrigerant.
Summary of Contents for Bock HGZ Series
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