17
SECTION 4
MAINTENANCE
4.1 SPARE PARTS
To avoid delays in repairs, the following spare parts
should be stocked for your ECC:
NOTE
See Par agraph 2.1 .2 and 2.1.3 b efore
ordering circuit boards.
Circuit Board - - - - - - - - - - - - - - 30300/39320
NOTE
When o rdering Potentiometer As sy or
Motor a lso or der jump er wir es. Jumper
wires are used when older wiring does not
match the color coding of the new parts.
3 wire jumper - - - - - - - - - - 0152173200
Nylon Worm Gear - - - - - - - - - Call Factory
Motor - - - - - - - - - - - - - - - - - - Call Factory
5 wire jumper - - - - - - - - - - 40229
Parts orders must include the following information:
Pump serial number (on pump nameplate)
Model number (on ECC nameplate)
Part description
Quantity required
Always include the serial and model numbers in all
correspondence regarding the unit.
4.2 RETURNING UNITS TO THE FACTORY
Electronic Capacity Control (ECC) units will not be
accepted fo r r epair without a Return Material
Authorization, availab le fro m th e Factor y Repair
Department. If the ECC is being returned attached
to a p ump, process liquid should be flushed from
the pump liquid end and oil should be drained from
the pump ho using be fore the pu mp is sh ipped.
Label the un it clear ly to indicate the liquid being
pumped.
NOTE
Federal la w pr ohibits handling of eq uip-
ment that is not accompanied by an OSHA
Material Sa fety Dat a Sheet (M SDS). A
completed MSDS must b e packed in th e
shipping crate if the ECC is
returned
attached to a p ump. These safety precau-
tions will aid the troubleshooting and repair
procedure a nd p reclude serious inju ry to
repair personnel from hazardous residue in
pump liquid end.
All inquiries or parts orders should be addressed to
your local Milton Roy representative or send to:
Parts Department
Milton Roy Company
Flow Control Division
201 Ivyland Road
Ivyland, PA 18974-0577
Phone: (215)-441-0800
Fax: (215)-441-8620
4.3 MAINTENANCE
Because o f it s so lid-state de sign, th e Milton Ro y
ECC is e xceptionally re liable an d sho uld se ldom
need main tenance or r epair. Aside fro m calibr a-
tions (the u nit is calib rated at the factor y and
should not need calibrated initially), the only typical
maintenance p rocedures ar e r eplacement of the
printed cir cuit board, feed back potentiometer,
nylon worm gear, and/or replacement of the motor.
4.4 PRINTED CIRCUIT BOARD (PCB) RE-
PLACEMENT
4.4.1 Removal of PCB (Figure 15)
1. Apply power and set pump stroke adjust knob
to 0% se tting or remove power and manually
turn the pump stroke adjust knob to 0% setting.
WARNING
ALWAYS DIS CONNECT ELECTRICAL
POWER FROM THE PUMP MOTOR AND
ECC BEFO RE PER FORMING AN Y
MAINTENANCE. FAILURE TO FOL LOW
THESE INSTR
UCTIONS COULD
RESULT IN DEATH
OR SE RIOUS
INJURY.
2. Disconnect electrical power to ECC.
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