York YHAU-CE, Установка, эксплуатация и обслуживание, Страница: 30 / 136

JOHNSON CONTROLS
30
FORM 155.35-ICOM2.EN.CE/GB (1018)
DATE: 10/30/2018
SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
Do not allow negative pressure or any devices that cre-
ate negative pressure to operate in the area around the
chiller-heater. This may cause an incomplete air purge.
Gas inhalation and hypoxia may result.
To prevent injuries, do not put a finger, a rod, or any-
thing else into any rotary parts of the vacuum pump.
A caution label for a rotating object is pasted around
the belt cover of the vacuum pump. When you replace
the oil in the vacuum pump, belt, or perform mainte-
nance work, stop the chiller-heater. Be sure to turn off
the main circuit breaker (MCB1) and lockout or tagout
the unit. If you do not, the vacuum pump could start
abruptly and cause injury or damage to the unit.
Do not place anything heavy on the machine or its con-
trol panel. It may fall and cause injury.
Do not climb the unit without safety harnessing.
Contact your local Johnson Controls service office
for inspection and maintenance of the unit. Improper
inspection and maintenance can not only cause a ma-
chine malfunction but also possible injury.
Keep the chilled / hot water, cooling water under the
maximum usage pressure. If they exceed the maximum
usage pressure, pipes may spout or leak and cause an
electric leak or burn.
Do not change the set values of the safety devices and
protective devices. Operation with incorrect set values
cause a machine malfunction but also possible injury.
In the event that the circuit breaker or disconnect
switch activates, eliminate the cause of the problem
before restarting the unit. See SECTION 8 – TROU-
BLESHOOTING .
The shut off valve for the pressure release valve must
constantly remain open. It may only be closed when
servicing the pressure relief valve. The unit must never
operate with this shut off valve closed.
Do not touch any part or component displaying a high
tem perature caution label while the machine is opera-
ting. This includes the control panel, solution pump,
vacuum pump and any piping going to or from the so-
lution and vacuum pump.
Every week inspect the strainer for the air purge blow-
er to prevent clogs and an incomplete air purge.
Wear protective gloves and goggles when operating the
chiller-heater.
Do not operate the machine with panel doors open or
removed. Exposure to rainwater or wind pressure can
damage the electrical parts of the unit or cause leakage.
During service and maintenance work, be
sure to turn OFF the main circuit breaker
(MCB1). Follow all required Lockout or
Tagout procedures.
If the cables of the solution pump, refrigerant pump,
air purge blower, or vacuum pump are disconnected
for service and maintenance work, be sure to check the
rotating direction of the pump motor. If not, the chiller-
heater may malfunction.
When you change the oil of the purge pump, be sure to
stop the purge operation.
LEAK TESTING
When leak testing, be sure the area is properly venti-
lated. Failure to do so may result in suffocation.
ELECTRICAL SHOCK CAUTIONS
Do not touch any switch in the control panel with wet
hands. A severe electric shock may result.
Do not touch the wiring in the control panel. Electric
shock may also result.
Do not touch any part other than the control panel of
the machine and the valves described in the operating
manual. If you do, problems or injuries may take place.
Apply only the specified source voltage. Application
of a different source voltage may cause a fire and elec-
tric shock.
Welding should only be done under certain circum-
stances. Be careful not to compromise the integrity of
the vessel. Prior to welding, verify that the electrical
system is grounded properly. Failure to do this can re-
sult in electrical shock, injury, or damage to the chiller-
heater.