CRV-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
66 of 83
SECTION 14: VARIABLE FREQUENCY DRIVE PROGRAMMING
14.1 VFD Parameter Settin
g
s For Use With
Modulatin
g
Thermostats
The VFD parameters come
w
ith factory defa
u
lt set-
tings. The follo
w
ing parameter settings m
u
st be
changed for mod
u
lating thermostats. Settings can
only be altered
w
hen the p
u
mp motor is stopped.
Verify that there is po
w
er to the VFD (LCD display
w
ill
be on) and mod
u
lating thermostat is set to off.
To o
v
erride the rotary disconnect s
w
itch inside the
VFD enclos
u
re, t
u
rn the sq
u
are rod
w
ith a
w
rench to
the ON position. In order to be able to close the co
v
er
of the disconnect, the rods need to be t
u
rned back to
the OFF position.
14.1.1
To enter the PROGRAM mode and access the
parameters, press the Mode b
u
tton. This
w
ill acti
v
ate
the PASSWORD prompt (if the pass
w
ord has not
been disabled).
Display reads "00"
Upper right decimal point blinks
14.1.2
Use the arro
w
b
u
ttons to scroll to the pass
w
ord
v
al
u
e
(the factory set pass
w
ord is 225).
Press Mode to enter pass
w
ord.
Once the correct pass
w
ord
v
al
u
e is entered, the dis-
play
w
ill read "P01",
w
hich indicates that the
PROGRAM mode has been accessed at the begin-
ning of the parameter men
u
(P01 is the first
parameter).
NOTE: If the display flashes "Er", the pass
w
ord
w
as
incorrect, and the process to enter the pass
w
ord
m
u
st be repeated.
14.1.3
Use the arro
w
b
u
ttons to scroll to the desired
parameter n
u
mber. For ne
w
parameter settings
See
Page 67, Section 14.2
.
14.1.4
Once the desired parameter n
u
mber is fo
u
nd:
Press Mode to display present parameter setting
(example setting is 20.0).
Upper right decimal point blinks.
Use arro
w
b
u
ttons to change setting.
Press Mode to store ne
w
setting and exit the
program mode.
14.1.5 To chan
g
e another parameter, press the
Mode key a
g
ain to re-enter the PROGRAM mode
(the parameter menu will be accessed at the
parameter that was last viewed or chan
g
ed
before exitin
g
).
If the Mode key is pressed
w
ithin t
w
o min
u
tes of exit-
ing the PROGRAM mode, the pass
w
ord is not
req
u
ired to access the parameters. After t
w
o min
u
tes,
the pass
w
ord m
u
st be entered in order to access the
parameters again.
DANGER
Electrical Shock Hazard
Enclosure contains live electrical
components.
Programming must be done by a trained
technician only.
Replace cover before operating.
Failure to follow these instructions can result
in death or electrical shock.
0 0
2 2 5
P 0 1
Summary of Contents for CoRayVac CRV-B-10
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Page 71: ...SECTION 13 STARTING THE SYSTEM 65 of 83 FIGURE 42 Vacuum Reading ...
Page 81: ...SECTION17 TROUBLESHOOTING 75 of 83 17 1 Troubleshooting Flow Chart ...
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