Troubleshooting guide

AVOID LOCATIONS WHERE THE MPC WOULD BE SUBJECTED TO EXTREME COLD OR HEAT

[LESS THAN 0 CELSIUS (32 FAHRENHEIT) OR GREATER THAN 40  CELSIUS (104 

FAHRENHEIT)] OR DIRECT SUNLIGHT. FAILURE TO OBSERVE THIS WARNING COULD DAMAGE

THE

MPC AND VOID ITS WARRANTY.

5.2 Installation Notes

The MPC is a microprocessor-based controller that uses electro-static sensitive CMOS components. Do

not make any (high or low voltage) electrical connections without adequately grounding the MPC and

the worker to eliminate an electro-static charge between the two. A conductive wrist strap worn by

the worker and attached to the MPC enclosure is adequate to satisfy this requirement.

Calibration is an important element of successful MPC operation. Permanent installation of a calibration

column as depicted in Figure 1 is strongly recommended.

Conduit connections can carry fluids and vapors into the MPC causing damage and void the warranty.

Care should be taken when installing conduit to protect against fluid/vapor entry. If necessary, provide

sealed entries or conduit drains near the point of entry. The controller comes equipped with liquid-tight

connectors for signal cable entry points. The user must supply the correct connection for the power

entry, as per the local codes and requirements. Any cable entrances that are not used should be

appropriately sealed against moisture and vapors.

5.3 Electrical Wiring

The MPC has many advanced features that may make wiring the unit appear complicated. Wiring is

actually very simple – one high voltage connection is all that is required to take advantage of the

majority of the MPC's features.

If you will be mounting your handheld controller in a remote location, refer to Section 10 at this time.

Wait a minimum of 3 minutes after disconnecting power before servicing the MPC or pump

motor. Capacitors retain a charge even after power is removed from the controller.

It is highly recommended that you take a step-by-step approach to wiring and confirming proper MPC

operation:

1. Make the high voltage connections (ref. Section 5.3.2). These will allow you to operate the

MPC and attached Pulsafeeder pump.

2. Decide which low voltage Inputs and Outputs (e.g., 4-20mA in) will be used and make those

connections (ref. Section 5.3.3).

3. Power-up and test the MPC to confirm the connections and check for proper operation.

4. Configure the software via the menu system for the desired operational conditions. Depending

on the anticipated function, users may need to enter settings for the following:

a. Analog input signals, so the MPC can accept a process input signal

b. Analog output settings, so the MPC can provide a process feedback signal

c. Digital input settings, for example start/stop and/or leak detection inputs

d. Digital output settings, for example status and/or alarm outputs

5. Conduct a final power-up and test the MPC to confirm the connections and check for proper

operation.

6. Go to the Section 6 – Start Up Instructions for details on how to perform the power-up tests.