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Do not purge refrigerant to the atmosphere. Capture
refrigerant using recovery equipment. Follow the
manufacturer’s recommendations.
Important
Multiplex assumes no responsibility for the use of
contaminated refrigerant. Damage resulting from
the use of contaminated refrigerant is the sole
responsibility of the servicing company.
Important
Replace the liquid line drier before evacuating and
recharging. Use only a Multiplex (O.E.M.) liquid line
fi lter drier to prevent voiding the warranty
Connections
• Blended Ice Machines are critically charged. There
are no refrigerant access ports.
• Locate the high and low side process tubes.
• Install a piercing valve (saddle valve) on both the
high and low side process tubes.
• Remove piercing valves after charging. Unit is
critically charged.
• Purge system with nitrogen while brazing to prevent
build up of copper oxide in the refrigeration system.
• Manifold gauges must be removed properly to
ensure that no refrigerant contamination or loss
occurs. A quick disconnect is required for the high
side connection unless high side valve has shut off.
Recovery/Evacuation
1. Place the rocker switch in the OFF position.
2. Install manifold gauges, charging scale, and
recovery unit or two-stage vacuum pump.
3. Open the high and low side valves on manifold
gauges.
4. Perform recovery or evacuation:
5. Recovery: Operate the recovery unit as directed by
the manufacturer’s instructions.
6. Evacuation prior to recharging: Pull the system
down to 500 microns. Then, allow the pump to run
for an additional half hour. Turn off the pump and
perform a standing vacuum leak check.
7. Check for leaks using an electronic leak detector
after charging the Blended Ice Machine.
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