Armstrong 4280 - 1 Introduction; Precautions; Instructions for Safe Use; Ambient Temperature

installation &
operating instructions
Design Envelope 4200h & 4280
End Suction Horizontal Pumping Units
4
Factory 5.3 mm/s (0.21 in/s) 200 kW (268 bhp) & above
Factory 4.3 mm/s (0.17 in/s) below 200 kW (268 bhp)
Field 3.3 mm/s (0.13 in/s) below 200 kW (268 bhp)
Overall Vibration Velocity (mm/s) RMS
Overall Vibration Velocity (in/s) RMS
Pump power, bhp
Pump power, kW
Field 4.3 mm/s (0.17 in/s) 200 kW (268 bhp) & above
10
101
0
1
2
3
4
5
6
7
8
9
10
100
100
1000
1000 10000
0
0.1
0.2
0.3
0.4
1.0 introduction
This manual contains specific information regarding the safe
installation, operation and maintenance of Armstrong Design
Envelope pumps. Read this manual carefully before installing or
using the product. If clarification is needed on any point please
contact Armstrong quoting the equipment serial number.
1.1 precautions
1.1.1 instructions for safe use
No installation of this equipment should take place
unless this document has been studied and under-
stood. Handling, transportation and installation of this
equipment should only undertaken by trained personnel with
proper use of lifting equipment. See later diagrams for lifting
advice. Refer to the pump nameplate for pump speed, pressure
and temperature limitations. The limits stated must not be
exceeded without written permission from Armstrong.
1.1.2 ambient temperature
Install the Design Envelope unit with adequate access
for routine maintenance. A minimum of 2" (50 mm)
clearance is required at the fan inlet to facilitate
airflow. Where several Design Envelope units are installed in
close proximity, care must be taken to ensure that there is no
re-circulation of exhausted warm air.
Under normal operating conditions the pump surface tempera-
ture may reach 68°c/ 155°f (Restricted Zone) to 80°c/176°f
(Unrestricted Zone). Steps should be taken to minimize contact
or warn operators/users that normal operating conditions will
be exceeded. in certain cases where the temperature of the
pumped liquid exceeds the above stated temperature levels,
pump casing temperatures may exceed 100°c/212°f and not
withstanding pump insulation techniques appropriate mea-
sures must be taken to minimize risk for operating personnel.
The ambient temperature for standard motors must be no
greater than 40°c/104°f.
1.1.3 enclosure rating
The standard enclosure rating for Design Envelope
4200H and Design Envelope 4280 integrated
controls is ul Type 12 / ipp55. If the pump is to be
installed in a wet or dusty environment, then a higher enclosure
rating may be required (contact Armstrong).
1.1.4 vibration levels
Armstrong end-suction horizontal pumps are designed to meet vibration levels set by Hydraulic Institute Standard hi Pump
Vibration 9.6.4. Standard levels are as detailed below