Emerson Liebert HIROSS HCE 07 Manual De Servicio página 5

4 --- Calibrations (Tab. 3)
Pressure switches (P) and Variex installations (HPC) must be calibrated in compliance with the values indicated in Tab. 3.
5 --- Fault finding
NOTE: The following guide complements that contained in the air conditioner manual.
FAULT
FAN(S)
ALWAYS ON
FAN(S) NOT
WORKING
HIGH COMPR.
DELIVERY
PRESSURE
(HP ALARM)
NOISY
FANS
UNIT
VIBRATES
CAUSE
burnt out
fan motor
Yes
replace
fan motor
Yes Yes
worn / faulty
faulty
No
bearings
fan motor
(runing hot)
unit not
No
fan impellers
fixed to
unbalanced
ground
Yes Yes
fix as in verify /
para. 2.1 replace
No No
defective
switch
Yes
replace
(see CHAP .4)
no evident
No
problem but
still too noisy
Yes
No
install opt.
Variex kit
3
REMEDY
clean as
in CHAP . 3
Yes
PV or Variex
dirty No
does not
cooling coil
intervene
Yes
adjust Yes
miscalibrated
Yes
faulty
replace
Yes
capillary
unblock
blocked
No
No
No
No
seek
external
assistance
English