Section 3; Installation; Location; Mounting - DSI Dynamatic AS-703 Instruction Manual

Location

Select a permanent
unobstructed flow of clean cooling air to permit the
unit to perform according to its ratings. Locate the
unit at least 12 inches away from walls and similar
obstructions to ensure sufficient air for cooling. The
ambient temperature of input air must not exceed
40°C. (104°F.). Higher ambient temperatures
reduce the thermal rating by 20 percent for every
7°C. (20°F.) ambient increase. Maximum ambient
must not exceed 66°C. (150°F.).

Mounting

The unit should be mounted directly to a bed, base
or platform to ensure that it is rigid. Even if it is
purchased mounted on a base, the base must still
be aligned and secured.
CAUTION: Failure to properly mount and level this
unit may result in distortion to the housing,
mechanical failure, misalignment and rapid bearing
wear.
Mount the unit as follows:
1. One or more mounting feet of the unit may not
contact their mounting pads. With a feeler
gauge, find and measure gap between each
foot and its pad.
2. Place slotted shim, equal in thickness to
measured gap, under each high mounting foot.
3. Install mounting bolts or nuts finger tight.
4. Proceed with alignment as described below
under "Alignment".
5. Alternately tighten bolts.
6. Recheck alignment and change shims as
required.
7. Dowel all directly connected units to prevent
creeping and future misalignment.

Alignment

General
Proper installation and alignment of this unit,
as specified herein, is a condition of the
Manufacturer's warranty.
12

INSTALLATION

location affording

SECTION 3

Angular misalignment and Offset misalignment
between directly connected shafts will cause
increased bearing loads and vibration, even when
an
the connection is made by means of a flexible
coupling. Shaft alignment becomes especially
critical if operated at high speeds. For this reason,
the alignment of directly connected shafts must be
checked with a dial indicator after coupling hubs
have been installed.

Flexible Couplings

A flexible coupling should be used to connect inline
shafts in order to avoid undue bearing stresses. It
should never be forced onto a shaft by pounding,
or serious damage to the bearings is risked.
Moderate heat can be applied to the hubs to locate
them in place on the shafts. If the hubs must be
pressed on, use the threaded hole in the end of the
shaft in order to avoid bearing damage. Be careful
to start it true, not cocked, otherwise it is possible
to burr the shaft. A light film of oil or other lubricant
on the shaft will prove an aid to mounting. Be sure
that the shafts are well cleaned before the coupling
hubs are installed. When pressed over a
considerable length of shaft, it may be necessary
to expand the coupling hubs by heating.
CAUTION: DO NOT drive or force the coupling hubs
If a key is used in a coupling, be sure that the key
fits snugly in the shaft and coupling but does not fill
the space on top of the key. Some clearance must
be left at this point.
Note - Although flexible couplings are designed to
accommodate parallel and angular misalignment, care
should be taken to align the driving and driven
machinery as accurately as possible when the coupling
is installed. Even when the original alignment has been
very accurate, misalignment
onto the shafts.