Danfoss BW10 020-090, Инструкции по установке, эксплуатации и обслуживанию

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1.4 - Repair safety considerations
All installation parts must be maintained by the personnel in
charge, in order to avoid material deterioration and injuries to
people. Faults and leaks must be repaired immediately. The
authorized technician must have the responsibility to repair the
fault immediately. After each repair of the unit, check the
operation of the protection devices and create a report of the
parameter operation at 100%.
Comply with the regulations and recommendations in unit and
HVAC installation safety standards, such as: EN 378, ISO 5149,
etc.
If a leak occurs or if the refrigerant becomes polluted (e.g. by a
short circuit in a motor or BPHE frost) remove the complete
charge using a recovery unit and store the refrigerant in mobile
containers.
Repair the leak detected and recharge the circuit with the total
R-410A charge, as indicated on the unit name plate. Do not top
up the refrigerant charge. Only charge liquid refrigerant
R-410A at the liquid line.
Ensure that you are using the correct refrigerant type before
recharging the unit.
Charging any refrigerant other than the original charge type
(R-410A) will impair machine operation and can even destroy
the compressors. The compressors operating with this
refrigerant type are lubricated with a synthetic polyol-ester oil.
Never use air or a gas containing oxygen during leak tests to
purge lines or to pressurise a machine. Pressurised air
mixtures or gases containing oxygen can be the cause of an
explosion. Oxygen reacts violently with oil and grease.
Only use dry nitrogen for leak tests, possibly with an
appropriate tracer gas.
If the recommendations above are not observed, this can have
serious or even fatal consequences and damage the
installation.
Never exceed the specified maximum operating pressures.
Verify the allowable maximum high- and low-side test
pressures by checking the instructions in this manual and the
pressures given on the unit name plate.
Do not unweld or flamecut the refrigerant lines or any
refrigerant circuit component until all refrigerant (liquid and
vapour) as well as the oil have been removed from unit.
Traces of vapour should be displaced with dry nitrogen.
Refrigerant in contact with an open flame produces toxic
gases.
The necessary protection equipment must be available, and
appropriate fire extinguishers for the system and the
refrigerant type used must be within easy reach.
Do not siphon refrigerant.
Avoid spilling liquid refrigerant on skin or splashing it into
the eyes. Use safety goggles and safety gloves. Wash any spills
from the skin with soap and water. If liquid refrigerant enters
the eyes, immediately and abundantly flush the eyes with
water and consult a doctor.
Never apply an open flame or live steam to a refrigerant
container. Dangerous overpressure can result. If it is
necessary to heat refrigerant, use only warm water.
During refrigerant removal and storage operations follow
applicable regulations. These regulations, permitting condi-
tioning and recovery of halogenated hydrocarbons under
optimum quality conditions for the products and optimum
safety conditions for people, property and the environment are
described in standard NF E29-795.
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 safety 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.