VYPER
™
VARIABLE SPEED DRIVE
INSTALLATION
100-210 IOM (
JUL
09)
Page 33
COOLANT CONTAMINATION AND
PROPERTIES
Drive coolant comes packaged in 1-gallon containers.
The coolant is premixed and should not be diluted.
The drive coolant is pink color but may become clear over
time. Although the coolant may become clear, the nitrate
inhibitor is still effective.
The coolant volume varies by the size of the drive. The
700 HP drive requires 3 gallons and the 912 HP requires
4 gallons.
Coolant part number is 639A0211H36.
The coolant consists of distilled water containing a nitrite
inhibitor which has the same heat-transfer characteristics
as water.
The nitrite inhibitor is designed to reduce the corrosion
effect on the aluminum surfaces in the cooling circuit and
helps to prevent galvanic action from taking place between
dissimilar metals.
The coolant is not intended to be an antifreeze and will not
prevent freezing at low temperatures.
The coolant should be inspected regularly and replaced
annually.
Should it be necessary to remove the coolant fro any rea-
son, such as equipment repair, discard the old coolant and
replace with new.
If the color of the coolant turns a brown or green, this indicates
that a bacteria growth is taking place within the coolant. If the
coolant turns milky white, or if the inside of the tubing has
a white coating, the nitrate concentration has fallen below
990 ppm. This is an indication that the nitrate is corroding
the inner surfaces of the cooling system and oxidizing the
aluminum. If any of these conditions exist:
1. Drain the coolant and blow the system out with
compressed air.
2. Flush the coolant system out thoroughly with wa-
ter.
3. Fill the coolant loop with ethylene glycol (not Pro-
pylene glycol).
4. Circulate the ethylene glycol for approximately one
hour.
5. Drain the ethylene glycol and refill the coolant loop
with York coolant.
Pulling P2 and J2 on the control logic board will run
the circulation pump which will help to remove air
during the filling process.
6. Check the coolant system again in two weeks to
ensure the biological growth or oxidization does
not return.
BLOWER MOTOR ROTATION
The Blower Motor rotation is marked on the blower assembly and is to be such that the blower draws into the assemly through
the screen and pushes down and through the motor.
