4
Instruction Manual
2.1 INTRODUCTION
The Pneumatic Capacity Control is an integral
accessory designed for mounting on the
Milroyal
®
B frame pumps in place of the manual
micrometer adjustment. Two air line connections
are required to place the unit into operation:
1. The instrument air signal.
2. The supply air pressure regulated to 80 to
100 psi (551 to 689 kPa). As for all precision
pneumatic devices, clean, filtered, dry air should
be used at all times.
These connections are also shown in
Figures 1
& 2, pages 12-13
. Factory installed controls have
been adjusted for operation between 0 and 100%
capacity for the specified instrument air signal
range. For field installation,
refer to Section 3
,
“Maintenance”.
2.2 UNPACKING
Units are shipped Free on Board (FOB) factory
and the title passes to the customer when the
carrier signs for receipt of the unit. In the event
that damages occur during shipment, it is the
responsibility of the customer to notify the carrier
immediately and to file a damage claim.
Carefully examine the shipping crate upon receipt
from the carrier to be sure there is no obvious
damage to the contents. Open the crate carefully so
accessory items fastened to the inside of the crate
will not be damaged or lost. Examine all material
inside crate and check against packing list to be
sure that all items are accounted for and intact.
2.3 SAFETY PRECAUTIONS
When installing, operating, and maintaining
the Pneumatic Capacity Control, keep safety
considerations foremost. Use proper tools,
protective clothing, and eye protection when
working on the equipment and install the equipment
with a view toward ensuring safe operation.
Follow the instructions in this manual and take
additional safety measures appropriate to the liquid
being pumped. Be extremely careful in the presence
of hazardous substances (e.g., corrosives, toxics,
solvents, acids, caustics, flammables etc.).
2.4 FIELD INSTALLATION (RETROFIT)
This Pneumatic Capacity Control can be installed
on pumps in the field to replace the manual
micrometer stroke adjustment. It will be necessary
to disassemble the micrometer adjustment
in order to disconnect and remove the stroke
adjustment lead screw from the pump gear housing.
In preparation, turn the micrometer to zero stroke
setting. Refer to the applicable Milroyal
®
Instruction
Manual which was furnished with the pump for the
disassembly instructions. Manuals will be supplied
by the factory when the request is accompanied
with the Pump Serial Number.
SECTION 2 - INSTALLATION
