Dri-Air Industries HP4-X 750 Series 운영 매뉴얼 - 페이지 11

{카테고리_이름} Dri-Air Industries HP4-X 750 Series에 대한 운영 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Dri-Air Industries HP4-X 750 Series 17 페이지. Floor mount dryer

OPERATING MANUAL - HP4-X 400-750 FM DRYERS

Revision 10/8/02

DRI-AIR

INDUSTRIES, INC.

Basic Trouble-Shooting

The new Dri-Air MICROPROCESSOR Electrics are designed

for quick diagnosis of problems. The microprocessor is

designed to display error codes and faults that indicate the

nature of the failure that has occurred. The most common

errors and faults are discussed in the Microprocessor Control

Instruction Manual and should be consulted in the event of a

failure.

The following steps should be taken before proceeding with

other diagnostic steps.

1. Check the Power Circuit:

a. Incoming power fuses or circuit breaker

b. Check all dryer fuses with multimeter.

c. Is power supplied to the unit?

d. Check heater continuity using a volt/ohmmeter.

2. Compressed Air:

a. Is compressed air connected with at least 70 PSI

b. Check water separator and drain if necessary

c. Pressure gauge should read 70 PSI

3. Air Flow Circuit:

a. Ensure Zone Valve position corresponds to the

regeneration cycle by comparing the position of the Zone

Valve to the ZONE position lights on the dryer control

panel (See pg. 12 for details).

b. Make sure that all process air hoses are connected, not

crushed, and free from obstructions.

c. Inspect filter and make sure cover is tight and the filter

element is clean.

4. Control Circuit:

a. Using the MICRO Display panel ZONE indicator

lights as a guide for the dryer regeneration cycle, check

that all outputs to heaters are proper for the part of the

regeneration cycle that the machine is in. (Output

voltage to heater relays is approx 4.5v)

5. Operating Conditions:

a. Check the process temperature. It should not be set

below 140° F (60° C) because the unit will go into high

temp alarm.

Page 11