SealMaster CRACK PRO 125, Руководство пользователя

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CRACK PRO® HEATED HOSE MACHINE
OPERATING INSTRUCTIONS BEFORE 2017
SERVICE TIP FOR ENGINE START PUSHBUTTON
A. ENGINE START-UP
Red pushbutton on panel must be held in the depressed position while starting engine
until running oil pressure is established to open SWICHGAGE contacts. NBMNBNB
(1) 518-APH pushbutton should remain in the depressed position during normal running.
If pushbutton fails to remain in the depressed position:
(A) Visually check wiring for loose connections, frayed wiring, etc., on all terminals and
switch loop circuit.
(B) Check 14amp fuse connected to “B” terminal.
(C) Check for good ground on “G” terminal.
(D) Disconnect switch loop circuit from SW1 and SW2 terminals. Place temporary jumper
between SW1 and SW2 and restart engine. If pushbutton stays in with engine running, 518-
APH switch is not the problem. This indicates either an open circuit, unwanted ground, or
too high resistance in switch loop circuit wiring, between SW1 and SW2.
(E) Continuity checks power removed from “B” terminal.
(1) With ohmmeter or continuity light, check for good continuity through switch
loop circuit. If good continuity is indicated, proceed to step (2).
(2) Unwanted ground in loop circuit. With SWICHGAGE contact adjusted away
from pointer, check continuity between one end of loop circuit and ground. Good continuity”
indicates an unwanted ground in loop circuit such as a terminal rotated against mounting panel.
Remove ground, restore loop circuit connections to SW1 and SW2, power to (B), restart engine.
(3) Too high resistance in switch wiring
With ohmmeter, check resistance between one end of the loop circuit to the
other. Resistance should exceed 25 ohms. If resistance is too high, recheck
for loose connections in loop circuit. Otherwise select larger size wire for
loop circuit
.
B. ENGINE SHUT DOWN
(A) Engine fails to shut down when contacts close on one wire to ground SWICHGAGE controls.
(1) With engine running, jumper SW1 to “G” terminal. If switch trips and engine
shuts down, trouble is failure of SWICHGAGE contacts to make contact or lack of good case
ground on SWICHGAGE . Adjust contacts back and forth to give a wiping and cleaning action on
contacts. Check switch mounting for good ground.