Hydrovane HR04, User Handbook Manual

Page: 15 / 24

6.0 Adjustments
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CC1132751C 15
6.0 Adjustments
6.1 Compressor Control (Fig 6.1)
The compressor controller has Operator Menus with parameter
settings that can be modified within set limits to suit system
requirements.
The controller has a built-in time delay to prevent pressurised
restart that inhibits the automated motor start sequence and
controls the vent solenoids.
The venting system (REVS) is controlled by solenoid valves
mounted on the starter enclosure under the top panel cover.
A normally closed solenoid valve (A) controls compressor
delivery pressure using the REVS start system to reduce power.
The normally open solenoid valve (B) vents the compressor
during the REVS sequence for off-load power savings and after
stopping allows quick restart if required.
The normally open solenoid valve (C) isolates the servo and
vacuum valve feeds during full load operation to reduce losses
and maximise compressor efficiency.
System pressure is shown on the controller, compressor
pressure can only be viewed on the gauge fitted to the drive end
cover.
Fig 6.1 Solenoid Locations
6.2 Operation Selection
The controller has AUTOMATIC OPERATION stop/start set as
default to achieve maximum efficiency. Go to the [CONTROL
MENU] sub-menu and use the
key to go to the AUTOMATIC
OPERATION menu item.
Press the key the AUTOMATIC OPERATION value starts to
flash. Use the key to switch to CONTINUOUS OPERATION,
confirm by pressing the key.
6.3 Operator Menus
To alter default values in menus, or view error codes, press the
and keys together.
Use the button to switch to the [CONTROL MENU] or [FAULT
MEMORY] sub-menu then press the key to select.
In the [CONTROL MENU] the CUT-OUT POINT menu item
appears on the display. Press the
key, the value will flash.
Increase or decrease this value using the or key, confirm
the value set by pressing the key.
Press the or key to scroll though available parameter
settings, press the key to select.
a) CUT-OUT POINT
b) CUT-IN POINT or TARGET PRESSURE (RS)
c) p
2
CUT-OUT POINT
d) p
2
CUT-IN POINT or p2 TARGET PRESSURE (RS)
e) RUN-ON TIME
f) AUTOMATIC OPERATION
g) ENABLE REMOTE-START
h) TIMER CONTROL
i) p
2
TIMER CONTROL
j) AUTO RESTART
k) POWER LOSS TIME
l) START-UP DELAY
m) DRYER PRE-RUN
n) RS485-ProTOCOL
o) RS485-BAUDRATE
p) RS485-ADDRESS
A selected item will flash, press the or key to change a
value or select an alternative, press the key to select.
The [FAULT MEMORY] retains the most recently recorded
warning or fault and the hours when the event occurred. The last
warning or fault recorded is always at the top.
In order to distinguish between faults and warning messages,
faults are marked with an exclamation (!). Use the
or key
to switch between the individual memory areas in the fault
memory.
See Section 8.0 Controller Messages for warnings and faults.
6.4 Pressure Adjustment
WARNING !
PRESSURE ADJUSTMENTS SHOULD BE MADE
BY TRAINED SERVICE ENGINEERS. FAILURE
TO COMPLY WITH THIS REQUIREMENT MAY
INVALIDATE THE COMPRESSOR WARRANTY.
Press the and keys together. Use the key to switch to
the [CONTROL MENU] sub-menu, press the key to select.
The unload CUT-OUT POINT appears first, press the key, the
value will flash, press the or key to change the value to the
desired pressure and press the key to select.
Press the key to switch to the load CUT-IN POINT, press the
key the value will flash, press the or key to change the
value to the desired pressure and press the key to select.
The load/cut-in pressure should be set 0.5 bar (7 psi) below the
nominal pressure required and unload pressure 0.5 bar (7 psi)
above, servo valve pressure is 1.0 bar (14.5 psi) above the
nominal.
Both parameters load/cut-in and unload/cut-out pressure must
be set on the controller together with manual servo adjustment to
ensure that the compressor functions correctly.
6.5 Pressure Control RS Compressors
The load/cut-in (TARGET) and unload/cut-out pressure may be
adjusted from the default settings shown in 2.0 Product
Information in the range of 6, 7, 8, 9 or 10 bar (87, 102, 116, 130
or 145 psi).
In the [CONTROL MENU] match the load/cut-in (TARGET)
pressure to the nominal bar figure required, the unload/cut-out
CUT-OUT POINT pressure 0.5 bar (7 psi) above, servo valve
pressure is 1.0 bar (14.5 psi) above the nominal.
Manual servo valve adjustment is necessary to match pressure
selected on the controller.
A C B