7
ONLY AUTHORIZED PERSONNEL SHOULD SERVICE
THE CHILLER
Only authorized personnel should service the chiller. Incorrect
service could result in electric shock or fire.
PROHIBITED
1.1.2 - Safety precautions for repair, moving or disposal
ONLY AUTHORIZED PERSONNEL SHOULD REMOVE OR
REPAIR THE CHILLER
Any relocation or moving of the chiller should only be done by
authorized personnel. Incorrect work could result in water leaks,
electric shock or fire.
MUST BE OBSERVED
ONLY AUTHORIZED PERSONNEL SHOULD DISPOSE OF
THE CHILLER
To dispose of the chiller, contact local specialists. Incorrect
disposal may result in absorbent leaks and cause metal corrosion
or skin disease, electric shock or fire.
MUST BE OBSERVED
WARNINGS
CAUTION
1.1.3 - Operating precautions
1. Keep the purge valve tightly shut to prevent air from
leaking into the chiller, which may cause the failure of the
chiller.
2. Keep the power supply to the control panel turned on,
unless carrying out maintenance or service.
3. During the chiller dilution cycle the chilled-water pump
(both the primary side and the secondary side) and air
handling unit must be operated for the required time. The
chiller has some cooling capacity, even in the dilution
cycle. Do not stop the air handling unit before the required
time to prevent possible subcooling.
4. Do not perform an insulation test on the control circuits of
the electric controller.
5 . Use a Carrier recommended interlock system to stop/
start the auxiliary equipment. The interlock system
automatically stops/starts the chilled-water pump and
cooling water pump. Please follow the start procedure in
Figure 1 below.
Fig. 1 - Auxiliary equipment start/stop sequence
1: Chilled
water pump
2: Cooling
water pump
3: Cooling
tower
5: Air
handling
unit
1 Absorption
chiller
2: Cooling
water pump
3: Cooling
tower
4: Chilled
water pump
5: Air handling
unit
1 - PRECAUTIONS - CONT.
4: Absorption
chiller
