Measures, Provisions, Procedures Against Emergencies - Carrier AquaSnap 61WG Series Installation, Operation And Maintenance Instructions

1 - INTRODUCTION
Any refrigerant transfer and recovery operations must be carried
out using a transfer unit. 3/8" SAE connectors on the liquid, suction
and discharge lines are available for all units for connection to the
transfer station. The units must never be modified to add refrigerant
and oil charging, removal and purging devices. All these devices
are provided with the units. Please refer to the certified dimensional
drawings for the units.
Do not re-use disposable (non-returnable) cylinders or
attempt to refill them. It is dangerous and illegal. When
cylinders are empty, evacuate the remaining gas pressure,
and move the cylinders to a place designated for their
recovery. Do not incinerate.
Do not attempt to remove refrigerant circuit components or
fittings, while the machine is under pressure or while it is
running. Be sure pressure is at 0 kPa and that the unit has
been shut down and de-energised before removing
components or opening a circuit. If the refrigerant circuit is
open to carry out a repair, all circuit openings must be
plugged, if the repair takes longer than 30 minutes. This
prevents humidity from contaminating the circuit, especially
the oil. If the work is expected to take longer, charge the circuit
with nitrogen.
Do not attempt to repair or recondition any safety devices
when corrosion or build-up of foreign material (rust, dirt,
scale, etc.) is found within the valve body or mechanism. If
necessary, replace the device. Do not install relief valves in
series or backwards.
ATTENTION: No part of the unit must be used as a walk-way,
rack or support. The refrigerant lines can break under the
weight and release refrigerant, causing personal injury.
Do not climb on a machine. Use a platform, or staging to work
at higher levels.
Use mechanical lifting equipment (crane, hoist, winch, etc.)
to lift or move heavy components. For lighter components,
use lifting equipment when there is a risk of slipping or losing
your balance.
Use only original replacement parts for any repair or compo-
nent replacement. Consult the list of replacement parts that
corresponds to the specification of the original equipment.
Do not drain water circuits containing industrial brines,
without informing the technical service department at the
installation site or a competent body first.
Close the entering and leaving water shutoff valves and purge
the unit water circuit, before working on the compo-nents
installed on the circuit (screen filter, pump, water flow switch,
etc.).
Periodically inspect all valves, fittings and pipes of the
refrigerant and hydraulic circuits to ensure that they do not
show any corrosion or any signs of leaks.
It is recommended to wear ear defenders, when working near
the unit and the unit is in operation.
1.5 - Measures, provisions, procedures against
emergencies
When the machine is subjected to heat or fire, a device prevents
explosion by releasing the refrigerant (via the relief valve). This
fluid can be decomposed into toxic waste when subjected to flame:
- Stay away from the unit.
- Set up warnings and recommendations for personnel in
charge to stop the fire.
- Fire extinguishers appropriate to the system and the
refrigerant type must be easily accessible.
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