Service Manual 32 – Contour 3 Series, Profiler & Advance – Approved Issue 5 Printed 2/13/2014 11:50:17 AM
60
Cooler Operation
(cont.)
Pump Operation
The Contour Cooler's pump has a synchronous motor with thermal protection, and a
magnetic coupling drive to the pump impellor.
The pump impellor may be driven in either rotation direction, which lessens the
likelihood of the pump blocking.
The pump base is integrated into the tank base and should not require removal.
The pump will be turned OFF for 15 seconds
at 15 minute intervals
, to allow the
water head in the feed tube to the distribution spreader to back flush the pump, and
keep it clear of blockages. Additionally, if the pump had an air lock, this pump
stoppage will allow water into the pump, to resume normal operation again.
All servicing and maintenance can be done through the service access compartment.
Dismantling
•
Isolate the 240 Volt power supply to the pump (N-E5).
•
Open service access compartment cover.
•
Drain
the tank of water.
•
Disconnect the wiring terminals on top of the pump motor.
•
Remove 3 screws on the perimeter of the pump upper housing.
•
Separate the upper pump housing from the base, which remains plumbed in the
tank.
•
Unclip the motor winding cover.
•
Slide the winding and lamination plate assembly up and off the pump housing
centre.
•
Slide the winding coil out from the lamination plates.