
50
Magtrol WB/PB Dynamometers
Chapter 2 – Installation / Mounting
By slightly moving the dynamometer stator backwards and forwards when the motor is stopped, the
side load disappears. If uncoupling the dynamometer makes the drag torque disappear, either the
coupling will have to be changed or it will have to be realigned with the motor.
C
aution
:
t
he
dynamometer
must
be
unCoupled
prior
to
Calibration
. (r
efer
to
C
hapter
6 – C
alibration
for
more
details
.)
2.7
CONNECTING THE COOLING SYSTEM
Proper cooling of the dynamometer is essential to ensure a long operating life and accurate measuring
results. All Magtrol WB/PB Series Dynamometers* are water-cooled to guaranty the best possible
heat dissipation.
* PB 2.7 Series Dynamometers are available with (K) or without a cooling circuit.
Note:
The cooling tubes must have an inside diameter in accordance with
the indications on the corresponding dynamometer data sheets (
see
Section 1.2
). They must be fitted to the dynamometer using a metal
ring. Also, check for correct water flow direction.
The cooling water input is marked “
C
ooling
water
inlet
” on the dynamometer housing. The other
nipple is used for the water outlet. Check for correct connections.
For more information on the dynamometer's cooling system, refer to
Chapter 3 – Cooling
.
2.8
PROTECTIVE SYSTEMS
WARNING! ALL ROTATING PARTS MUST BE FITTED WITH A
PROTECTIVE SYSTEM TO ENSURE THAT THE USER,
AS WELL AS ALL OTHER SURROUNDING PEOPLE AND
OBJECTS, WILL NOT BE INJURED OR DAMAGED AS
A RESULT OF THE MOTOR UNDER TEST BECOMING
BLOCKED, A TORQUE OVERLOAD, OR ANY OTHER
POTENTIAL PROBLEM.
The following precautions concerning protective equipment of the drive train must be observed:
• Protective elements must prevent access to moving parts (during test).
• Protective elements must cover all parts which can cause crushing or cutting, and protect
against projections of parts having become loose.
• Avoid attaching protective elements to rotating parts.
• Keep protective elements at a sufficient distance away from rotating parts.