SiBE811001EB
Test Operation
CONVENI-PACK
68
Caution
Refer to the
Operation Method of Stop Valves
for the control method of the stop valves.
Never replenish liquid refrigerant directly from a gas line. Liquid compression may
cause the compressor to fail.
Refer to the Service Manual for instructions on additional refrigerant charging when indoor
units are connected only to the air conditioning equipment side or only to the refrigeration
equipment side.
When the only indoor unit connected is an air-conditioner (when the showcase is not
connected to the air conditioning side), refer to the Service Manual for instructions on
additional refrigerant charging.
1. The refrigerant must be noted for this product. Calculate the amount of refrigerant
replenishment according to the label for the calculation of the amount of refrigerant
replenishment.
Procedures for calculating refrigerant charge amounts are described in page 18.
2. Take the following procedure for refrigerant replenishment.
Refer to “
Air Tight Test/Vacuum Drying
” for the connection of the refrigerant cylinder.
(1) Turn ON the indoor unit and control panel.
Do not turn ON the outdoor unit.
(2) Replenish refrigerant from the service port of the stop valve on the liquid side.
(3) If the calculated amount of refrigerant cannot be filled, take the following steps to operate the
system and continue refrigerant replenishment.
a. Open the gas stop valve all the way and adjust the opening of the liquid stop valve (
∗
1).
b.
[Warning/Electric Shock Warning]
Turn ON the outdoor unit.
c.
[Warning/Electric Shock Warning]
Turn ON the RUN switch of the outdoor unit and replenish refrigerant while the outdoor
unit is in operation.
d. Turn OFF the RUN switch of the outdoor unit after the specified amount of refrigerant is
replenished.
e.
[Caution]
Fully open the stop valves on the gas and liquid sides promptly. Otherwise, a piping
explosion may result from liquid sealing.
∗
1 The cylinder’s internal pressure will drop when there is little refrigerant remaining in the
cylinder, making it impossible to charge the unit, even if the liquid stop valve opening is
adjusted. In this situation, replace the cylinder with one that has more refrigerant remaining.
Additionally, if the piping length is long, replenishing while the liquid stop valve is fully closed
may lead to activation of the protection system, causing the unit to stop operation.
1. After the work is completed, apply a screw lock agent (for flare nuts) to the screws of the
stop valves and service ports.
Refer to the “Handling Precautions for Valve Cover” and “Handling Precautions for Service
Port” in “
Connecting the Refrigerant Piping
” for the handling of the valve covers and
service ports.
Label pasting position
Control box
Label of instructions on
refrigerant replenishment
