Instruction manual

Maximum Series Portable Chiller : Air & Water-Cooled : M1 Series Instrument
Page: 50
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: [phone]
Service Department Fax: [phone]
Email: [e-mail]
5.5 PUMP SEAL SERVICE
A. The coolant pump seal
is a carbon/niresist
shaft seal assembly
including a stationary
member, rotating
member and tension
spring(gure5.5A).
B. The operator can
determine the pump
seal is leaking when
uidisidentied
leaking from the pump
case adapter. Generally, a pump seal will leak due to
inadequateunitpressure,excessiveowandpooruid
quality.
C. The operator should follow this procedure to replace the pump seal:
1. Disengage process operations according to the procedure
outlined in section 3.4. The operator must be certain
processuidtemperatureisunder100°Fandpressureis
relieved (COOLANT pressure gauge reads “0”) and water
make-upowisshutoffandallpressurerelieved.
2. Disengage main power supply. The operator must verify the
proper lockout procedures
are followed.
3. Access the pump motor by
opening or removing any
cover panels as necessary
(gure5.5B).
4. Drain machine. The
machine can be drained
by using the drain valve
located on the pump case.
Drainuidintoasuitable
container for reuse or
disposal according to
manufacturer’sinstructions
(if a glycol solution is used).
5. Locate and remove the
three motor wire leads from
the motor wiring terminals.
The operator should “map”
the wire terminal locations
to ensure correct rewiring.
Stationary member
Rotating Member
Tension Spring
Figure 5.5A
Pump motor
Figure 5.5B
Pump motor
Figure 5.5C