Advantage Engineering Maximum, Instruction Manual

Page: 50 / 80

MK Series Portable Chiller : Air-Cooled : HE INSTRUMENT
Page: 50
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: service@AdvantageEngineering.com
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 (figure
5.5A).
B. The operator can
determine the pump
seal is leaking when
fluid is identified
leaking from the pump
case adapter. Generally, a pump seal will leak due to
inadequate unit pressure, excessive flow and poor fluid
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 fluid temperature is under 100°F and pressure is
relieved (COOLANT pressure gauge reads “0”) and water
make-up flow is shut off and all pressure relieved.
2. Disengage main power
supply. The operator must
verify the POWER light on
the display is “off”.
3. Access the pump motor by
opening or removing any
cover panels as necessary
(figure 5.5B).
4. Drain machine. The
machine can be drained by
using the drain valve
located on the pump case.
Drain fluid 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
Stationary member
Rotating Member
Tension Spring
Figure 5.5A
Pump motor Figure 5.5B
Pump motor
Figure 5.5C