SPX Cooling Technologies TG MAG23-65 Water Pump User Manual


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36
U
U
deltastar
delta star
L1
L1
L2
L2
L3
L3
N
N
U
1
V
1
W
1
U
1
V
1
W
1
W
2
U
2
V
2
W
2
U
2
V
2
A.0500.551 – IM-TGMAG/02.00 EN (02/2008)
Circuit breaker
For safety work on a pump unit, install a circuit breaker as close as possible to the machine. It also is
advisable to place an earth fault circuit breaker. The switching equipment must comply with prevailing
regulations, as stipulated by EN 60204-1.
Motor overload protection
To protect the motor against overloads and short-circuits a thermal or thermo-magnetic circuit
breaker must be incorporated. Adjust the switch for the nominal current absorbed by the motor.
Connection
• Donotuseastar-deltacircuitwithelectricmotorsduetotherequiredhighstartingtorque.
• Forsingle-phasealternatingcurrent,usemotorswitha“reinforced”startingtorque.
• Ensureasufcientlyhighstartingtorqueforfrequency-controlledmotorsandadequatecooling
of the motor at low speeds. If necessary, install a motor with forced ventilation.
Electrical equipment, terminals and com-
ponents of control systems may still carry
live current when at rest. Contact with these
may be fatal, result in serious injury or
cause irreparable material damage.
Line Motor
U (volt) 230/400 V 400 V
3 x 230 V delta –
3 x 400 V star delta
3.18.7.5 Combustion engines
When using a combustion engine in the
pump unit, see the engine instruction
manual included in the delivery. Contact
the pump supplier if the manual is not
included.
Irrespective of this manual the following
must be respected for all combustion
engines:
• Compliancewithlocalsafetyregulations
• Theexhaustofcombustiongasesmustbescreenedtoavoidcontact
• Thestartermustbeuncoupledautomaticallyoncetheenginehasstarted
• Thepre-setmaximumnumberofenginerevolutionsmaynotbemodied
• Beforestartingtheengine,theoillevelmustbechecked
Note!
• Neverruntheengineinaclosedarea
• Neverrefueltheenginewhileitisstillrunning
3.18.7.6 Shaft coupling
Internal gear pumps demand a relatively high starting torque. During the operation shock loads occur
due to pulsations inherent to the gear pump principle. Therefore, choose a coupling which
is 1.5 times the torque recommended for normal constant load.
Fit – without impact tool – both halves of the coupling to the pump shaft and the motor shaft
respectively.
Alignment
The pump and motor shafts of complete units are accurately pre-aligned in the factory. After
installation of the pump unit, the pump and motor shaft alignment must be checked and
re-aligned if necessary.
Alignment of the coupling halves may only take place by moving the electric motor!
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