Guardian SCC 25, Руководство пользователя, Страница: 70 / 79

Page 70
GUARDIAN SCC-40 Issue (Auto VI) & V3.6t 07/12/00
DIFFERENTIALS Cont’d
Display
Window
‘type’
selection
‘view’
selection
Settings unit Actual
Setting
Default
Setting
Min Max
SUCTION DIFF HIGH TRIP high-trip suction superheat (Suction
actual temp T1--Suction equivalent temp
P1)
After FIXED 10min timer.
°
C
-40c 100c
FILTER DIFF HIGH TRIP High Trip Filter Differential
IF PUMP & FStd Selected
(Filter Inlet Press P4 – Manifold oil
pressure Press P3)
IF PUMP & Fdis Selected
(Filter inlet Press P2 Discharge—Oil
Pump inlet Press P4)
If No-P,FStd,SCC30/35
(Filter inlet Press P4—Oil Press P3)
After FIXED 2min timer
bar 0.0 20.0
Display
Window
‘type’
selection
‘view’
selection
Settings
unit Actual
Setting
Default
Setting
Min Max
TIMERS
SUCTION TIMERS SETPOINT stage up delay (time @ 100%
before allowing next compressor to
start) (u)
mins
0.1u 12.5u
DISCHARGE TIMERS SETPOINT stage down delay (time @
minimum load or 50% if in slide
balance mode before stopping)
Set at 10.0 = none,
NO STOP AT MINIMUM,
MANUAL STOP ONLY.
N.B. To exit none setting =
Discharge, Timer, Setpoint,
Lower, Accept.
(d)
mins
0.1d 10.0d
none
OIL TIMERS SETPOINT pump pre-lube delay ( pump run
time before compressor starts) (p)
mins
0.2P 5.0P
FILTER TIMERS SETPOINT pump delay after compressor
stops until
at-minimum received
(o) mins
0.0o 5.0o
CAPACITY TIMERS SETPOINT
slide load delay (interval between
pulses when control within 0.3b) mins
0.1 5.0
LOAD TIMERS SETPOINT minimum delay after stop before
allowing restart
mins
0.3 12.5
CALIBRATION
4-20mA transducers are calibrated at the factory and should not need to be calibrated
at site.
Before attempting Pressure Calibration, please contact Guardian Electronics Ltd.,
Pressure transducers are set for a range of –1 to 24 Barg. (0-25 Bara)
4mA = -1 Barg, 17.44mA = 20 Barg,
CAUTION, Do not press the accept button if during calibration the display reads
–1.3Barg, as this is an out of range setting and will result in a permanent loss of
calibration.