Ametek Amrel PLA 2U, Operation Manual

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M470039-01 REV-F Page 143
F) AMREL recommends utilization of De-ionized/Distilled Water or non-corrosive coolants (pH level of
7)
G) Water Viscosity greater than 50 CST
H) When installing the inlet and outlet pipes, be careful not to over-torque the male pipe fittings into the
Inlet/Outlet pipe terminals. This additional force may crack the inlet and/or outlet female piping on
the eLoad.
I) Water pressure must be less than 80 PSI in order for the valve to work properly.
J) To remove water or fluid inside the unit completely, the valve can be manually turn on by supplying
an external 12Vdc onto the unplugged 4pin green Valve connector. Insert air pressure less than 80psi
from each FLUID INLET until no water or fluid coming out from FLUID OUTLET.
4) Anti-condensation Feature
Flow Control - The valve control system of the load is dependent of the heat sink temperature. When the
heat sink temperature increases above 28ºC, the water valve will turn on to decrease the temperature.
When the heat sink temperature drops to 24ºC, the valve will close. The valve acts as a switch to prevent
the internal heat sink temperature from dropping below 20ºC or lower temperatures that may cause
condensation to occur.
5) Bypass water valve and Pressure Regulator
For new standard PLW system with manifold system, a pre-installed pressure release valve can be used to
balance the inlet and outlet pressure, and it also can act as a water flow bypass. A pre-installed water
pressure regulator maintains a constant pressure over a wide range of inlet supply pressures.
6)
Maintenance – Liquid Solenoid Valve:
Required Maintenance Checks
As good practice, it is recommended to periodically check the liquid solenoid valves for clogs and sediment
build-up that may impede or decrease liquid flow. Please reference the procedures below for liquid valve
maintenance.
Liquid Valve Maintenance Check Procedures
1) Power off the unit, and release the water pressure from the piping system (water pressure will need to
be released in order to prevent water from gushing out of the inlet/outle t pipe when disconnecting the
water pipes). Locate the water valve on the rear panel of unit.