Stamford AS440 User manual

©2007 SP_SX440-AS440_07.07_01_GB
AVR CONVERSION INSTRUCTIONS
Fitting AS440 AVR in place of SX440 AVR.
•Read all instructions carefully before starting this conversion.
•Check that all the parts listed below are included with this conversion kit.
•Depending upon the type of machine being converted, not all the parts listed will be
required.
•No specialised tools are necessary.
Contents:
Item. Description. Part No. Qty. check
1 Conversion instructions (this sheet) SP_SX440_AS440_07.07_01_GB 1
2 AS440 AVR E000-24400 1
3 AS440 AVR specification sheet TD_AS440 AVR_11.06_03_GB 1
4 Terminal block (6-way) 450-15489 1
5 Fixing Screw 005-04068 1
6 Grommet 003-25161 1
7 AVR adjustment label E00-14064 1
8 AVR adjusting tool E00-10032 1
9 Cable-tie 052-45003 5
SAFETY
WARNING
Service and fault-finding procedures present
hazards which can result in injury or death.
Only personnel qualified to perform electrical
and mechanical service who are familiar with
the equipment should carry out these
procedures.
WARNING
Ensure engine starting circuits are
disabledand the generator is electrically
isolated before commencing service or
maintenance procedures.
Isolate any anti-condensation heater supply.
•It is essential that all instruments are regularly
checked for safety, and any connection leads,
probes or clips checked to ensure that they are
suitable for the voltage levels being tested.
•Never attempt to test a generator when the
engine is running (LIVE) unless there is another
competent person present who can switch off
the power supply and shut down the generator
in an emergency.
•Never expose electrical components with the
power on (LIVE) without creating a safe working
area around you. Make sure you have made all
other persons, in the immediate area, fully
aware of what you are doing.
•These instructions have been written for use
with the AVR specification as originally supplied
with the generator.

©2007 SP_SX440-AS440_07.07_01_GB
CONVERSION PROCEDURE
STEP 1 Removing the SX440 AVR.
1.1 Remove the appropriate covers to gain full access to the AVR and its mounting plate.
1.2 Make sure that all the existing AVR connection leads (Fig 1) are clearly identified. 9
1.3 Disconnect all the leads from the SX440 AVR.
1.4 Unscrew the 4 AVR fixings and remove the AVR. Keep the screws for use with the new AVR.
Fig 1 : Existing AVR wiring.
STEP 2 Preparing the new AS440 AVR.
2.1 Link terminals on the new AS440 AVR
[item 2] as follows and as shown in Fig 2.
Use the AVR adjustment label [item 7] to
identify the correct linking terminals.
a. Link terminals 8 - Z2
b. Link for the correct frequency of
operation (50Hz or 60Hz).
c. Link the required stability setting.
(select the ‘FAST’ setting in the correct
kW rating range – see AS440 AVR
specification sheet for details.)
d. Turn the AVR ‘Output Voltage Control’
to its minimum position (fully anti-
clockwise). Note that the output
voltage will need to be set to the
required level when installation is
completed. See ‘Step 5.3’
Fig 2 : Preparing the new AS440 AVR.
Link (a)
8 - Z2 Link (b)
Operating
Frequency
Link (c)
Stability
Selection
Output
Voltage
Control

©2007 SP_SX440-AS440_07.07_01_GB
STEP 3 Fitting the new AS440 AVR.
3.1 Insert the grommet [item 6] into the mounting plate
as shown in Fig 3a.
3.2 Mount the new AS440 AVR [item 2] using the four
fixing screws as shown in Fig 3a.
3.3 Fix the 6-way terminal block [item 4] to the rear of
the mounting plate using the fixing screw [item 5] as
shown in Fig 3b.
Fig 3a : Fitting the new AVR and grommet.
Fig 3b : Fitting the 6-way terminal block.
3.4 Remove one cable-tie and route existing
harness as shown in Fig 3b.
3.5 Pass leads marked P2, P3, F1 (or X or X+)
and F2 (or XX or XX-) through the grommet
ready to connect to the AVR.
3.6 Pass any accessory leads through the
grommet ready to connect to the AVR.
STEP 4 Reconnecting.
4.1 Connect leads to the new AS440 AVR [item 2] as shown in Fig 4. Pass all these leads through the
grommet [item 6]
a. Lead P3 to AVR terminal 7.
b. Lead P2 to AVR terminal 8.
c. Lead F1 (or X or X+) to AVR terminal F1
d. Lead F2 (or XX or XX-) to AVR terminal F2
e. Reconnect the Hand-Trimmer leads (if used) to AVR terminals 1 and 2.
f. Reconnect the Droop input leads (if used) to AVR terminals S1 and S2.
g. Reconnect the Accessory input leads (if used) to AVR terminals A1 and A2.
4.2 Connect leads 2 and 3 to the 6-way terminal block [item 4] as shown in Fig 4.
( These leads are not used by the new AVR and should not be connected to any equipment. )
4.3 Secure all wiring with cable-tie(s) provided [ item 9 ].
Grommet
[ item 6 ]
AS440 AVR
[ item 2 ]
4 x fixing screws
AVR mounting
plate
AVR mounting
plate
6-way terminal
block [ item 4 ]
Fixing screw
[
item 5
]
New route of existing
wiring harness

©2007 SP_SX440-AS440_07.07_01_GB
Fig 4 : New wiring for the AS440 AVR.
STEP 5 Final check & adjustments.
5.1 Check all wiring connections.
5.2 The AVR has been factory set and might not
be adjusted to suit your particular
requirements. Before adjusting the AVR
read the AS440 AVR Specification Sheet
[item 3].
5.3 Before starting the generator set it is
recommended that you turn the generator
output voltage control to its minimum position
(i.e. fully counter-clockwise). Adjustment of
the generator voltage (and other settings if
necessary) should be made using the AVR
adjustment tool [item 8] provided.
5.4 Start the generator set and check correct
operation of the new AVR. Make any
adjustments while observing any local or
national safety regulations and procedures.
5.5 Refit all covers and make safe.
CAUTION
Before you start the generator:
Make sure you have made all other persons in
the immediate area fully aware of what you are
doing.
Make sure you have read and understand the
AVR Specification Sheet.
Make sure you fully understand all the other
operating and safety instructions concerning
the generator set and its installation.
BARNACK ROAD
STAMFORD
LINCOLNSHIRE
ENGLAND PE9 2NB