Hach sc100TM Section 4 Maintenance

20

Section 4 Maintenance

4.1 Cleaning the Controller

With the enclosure securely closed, wipe the exterior with a damp cloth.

4.2 Fuse Replacement

The instrument contains two mains fuses. Failed fuses are an indication that an

equipment problem could exist. Problem resolution and fuse replacement should

be performed only by qualified service personnel. Refer to Figure 4-22 and the

following steps to replace the fuses:

1. Disconnect power to the controller (including power to relays if powered).

2. Open the hinged controller cover by completely loosening all four captive

screws in the cover.

3. Remove the high voltage barrier; pull out on the lever of the captive fastener

then pull straight out on the barrier. Set the barrier aside for reinstallation.

4. Remove the fuses and install new fuses of the same type and rating

(T, 1.6 A, 250 V, slow blow).

5. Reinstall the high voltage barrier.

6. Close the controller cover and hand-tighten the four screws.

7. Reconnect power to the instrument.

Figure 4-22 Fuse Replacement

1. Fuses F1 and F2, T, 1.6 A, 250 V, slow blow

NCNCNC COMCOMCOM NO

F1

F2

NONO

RELAYCRELAYB

RELAYB

RELAYA

J1

J2

J4

NETWORK

INTERFACE

CARD

J3

J5

J6

U5

U9

S1

Disconnect

Power

1

Contents

Main Table of Contents Section 1 Specifications Specifications are subject to change without notice. Section 2 General Information 2.1 Safety Information 2.1.1 Precautionary Labels 2.2 General Product Information Section 3 Installation Table 3-1 Customer Supplied Items 3.1 Mechanical Installation 3.1.1 Controller Dimension Illustrations Figure 3-4 Panel Mount Cut-out Dimensions Figure 3-5 Conduit Hole Dimensions 3.1.2 Using the Optional Sun Shield Figure 3-7 Mounting the Controller in the Sun Shield 3.1.3 Mounting the Controller Page 3.2 Electrical Installation DANGER 1. High voltage barrier 2. Unsnap the barrier latch then pull out to remove the barrier. 3.2.1 Installation in Conduit 3.2.2 Installation Using a Power Cord 3.2.3 Wiring for Power at the Controller 7. Reinstall the high-voltage barrier and latch to secure. Figure 3-14 Wiring Connections Table 3-2 Power Wiring Information Figure 3-15 Local Disconnect for Power Cord Figure 3-16 Local Disconnect for Hard-wired Line Power 1. Power terminal 2. Power cord strain relief 1. Power terminal 2. Conduit strain relief 3.3 Alarms and Relays 3.3.1 Connecting the Relays 3.3.2 Connecting the Analog Outputs J6 J5J5 RELAYCRELAYBRELAYA Figure 3-18 Analog Output Connections 3.4 Connecting/Wiring the Sensor Cable Figure 3-20 Hard-wiring the sensor RELAY1 From Probe J6 3.5 Connecting the Optional Digital Output RELAY3RELAY2 J1 J2 J4 NETWORK INTERFACE CARD J3 S1 Figure 3-21 Network Card Position in the Controller Table 3-5 Network Connections at Terminal Block J1 1. J2Network card header 2. Mounting hole (3) 3. Network card placement 4. J1 Terminal Detail A RS232 Connections to Customer-supplied Computer 9-pin D Subminiature Connector Common 5 9 8 7 6 Section 4 Maintenance 4.1 Cleaning the Controller 4.2 Fuse Replacement Section 5 Replacement Parts Replacement Items Accessories Section 6 How to Order U.S.A. Customers Information Required International Customers Technical and Customer Service (U.S.A. only) Section 7 Repair Service Section 8 Limited Warranty Limitations Limitation of Remedies Section 7 Compliance Information Product Safety Immunity EN 61326 (EMC Requirements for Electrical Equipment for Measurement, Emissions Canadian Interference-causing Equipment Regulation, IECS-003, Class A FCC PART 15, Class A Limits Index