ESAB CC-11 Manuel D'instruction page 341

SECTION 4
4.0 Maintenance
WARNING
1 . Maintain the coolant level in the reservoir at over half full .
2 . Periodically check the coolant pressure and flow through the system .
3 . Periodically inspect the radiators for build­up of airborne dust or other residues that may hinder the
cooling capacity of the CC­11 .
4 . When draining old coolant, dispose of it according to your local applicable rules and ordinances .
5 . Visually inspect the strainer from time to time and clean it if significant amounts of debris have accumu­
lated . Greasing the strainer's rubber gasket with silicone o­ring lubricant will help ensure a good seal .
4.1 Troubleshooting
1. Pump Below Capacity - Can be caused by restricted inlet, wrong direction of rotation, low motor
R .P .M ., and the relief valve improperly adjusted .
2. Pump Noisy - Can be caused by restricted inlet, discharge pressure over 200 psi (13 .8 bar), loose acorn
nut or damaged acorn nut gasket, air getting into lines, loose couplings, misalignment between pump
and motor, and loose mounting bolts or clamping ring .
3. Leakage - Is caused by failing mechanical shaft seal or rubber o­rings . Have pump rebuilt .
4. Pump Turns Hard - Can be caused by misalignment between pump and motor or by lime and min­
eral deposits in the pump . Deposits in pump would necessitate a pump rebuild, have pump rebuilt at
pump service center . Do not disassemble pump! Any attempt at field repair will void the warranty .
5. Fan or Pump Motor Not Turning - If PL2 not lit, 115VAC may not be supplied to P1, or TS1 is over 131°
F (55° C) if PL3 is lit . If PL1 and PL2 are lit, check F1 and F2 .
6. Pump/Motor Vibration ­ Indicates wear on coupling .
A slot is provided in the motor mounting plate to provide access to the coupling adjustment screws .
ELECTRIC SHOCK CAN KILL. PRECAUTIONARY MEASURES SHOULD BE TAKEN TO
PROVIDE MAXIMUM PROTECTION AGAINST ELECTRICAL SHOCK. BE SURE THAT
ALL PRIMARY POWER TO THE MACHINE HAS BEEN EXTERNALLY DISCONNECTED.
OPEN WALL DISCONNECT SWITCH OR CIRCUIT BREAKER BEFORE ATTEMPTING IN-
SPECTION OR WORK INSIDE THE CIRCULATOR. INSTALL ALL COVERS AFTER COM-
PLETING SERVICE. DO NOT OPERATE UNIT WITHOUT COVERS.
IF THIS EQUIPMENT DOES NOT OPERATE PROPERLY, STOP WORK IMMEDIATELY AND
INVESTIGATE THE CAUSE OF THE MALFUNCTION. MAINTENANCE WORK MUST BE
PERFORMED BY AN EXPERIENCED PERSON, AND ELECTRICAL WORK BY A TRAINED
ELECTRICIAN. DO NOT PERMIT UNTRAINED PERSONS TO INSPECT, CLEAN, OR RE-
PAIR THIS EQUIPMENT. USE ONLY RECOMMENDED REPLACEMENT PARTS.
Note:
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MAINTENANCE