Hoffer Flow Controls MF SERIES, Руководство пользователя

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Maintenance 15
HP-210
4.4 Assembly
1. Install any new parts.
2. Guide the rotor and bearing assembly onto the shaft. Make
sure the rotor is installed with the cup side of the Pelton wheel
facing the “IN” side of the housing.
3. Place a new gasket on the insert. Always use a new gasket.
4. Place the shaft assembly insert, gasket, and rotor assembly
back into housing by inverting the housing to keep gasket and
rotor assembly in place.
5. Install the threaded plug and tighten to 50 ft-lb.
4.5 Pickup Coil Testing
Testing the MAG and MCP (RF) coils consists of measuring the
resistance with an ohmmeter. Resistance measurements are to be
made when there is no flow through the meter or with the coil
removed from the meter housing.
1. Measure the resistance between pin A and pin B. The
resistance should be approximately as listed in the following
table of some common coils.
2. The resistance from any pin to the case should be greater than
1 Mohm.
COIL

DC RESISTANCE
(Ohms)
MC2PAHT
15.0

10%
MCP3A
11.5

10%
PC13-74G
1800

10%
PC13-74S
1850

15%
PC24-45G
1350

10%
PC24-45S
1850

15%
PC28-13G
120

20%
PC28-14G
180

20%

For specific coils not listed contact the HFC Customer Service Department for the
approximate resistance readings.