13
6.
Attach knob bolt to manway cover ensuring proper insertion through yoke and proper
seating of yoke onto flat areas of filter tank bezel.
7.
Rotate knob portion of the manway cover yoke clockwise to energize seal.
8.
Verify the air bleed discharge points away from all electrical connections.
4.6 Testing Filter
Before adding any sand to the filter, it is very important to test the system with water only. All
filters are tested with high pressure before leaving the factory. It is important to test the system
without sand first, to check for leaks. Open the vent valve. Fill the system with water. When
water stream, not water and air, is discharged from the vent valve, close vent valve. Run
system as normal and check for leaks. If there is a problem with the test, contact Hayward
customer service immediately. If sand is added before the test and there is a problem with the
filter, the sand will need to be evacuated in order to inspect for potential damage. Hayward®
will not be responsible for the removal and replacement of the sand for warranty or repair
work, nor will Hayward provide labor to evacuate and replace the sand for repair work done
due to transportation or installation damage. This is also a good chance to check all of the
plumbing for the system. Do not drain the water from the filter after the testing sequence.
4.7 Installation of the Sand
WARNING
After testing has been finished and the system is 100% operational, add the filtration sand
required. Use #20 silica sand (.45 - .55 mm). Open the vent valve, remove the manway cover
and seal from the filter. See section 4.4 (page 9). Ensure the filter is full of water up to the inlet
port. The proper amount of sand is listed in Fig. 3-1, page 7. If a diffuser head is directly
underneath the manway opening, cover it with plastic and tape to prevent sand from entering
the plumbing.
Notice -
Remove any plastic and tape from the diffuser after the sand is poured in the filter
and before starting the system.
Now, replace the manway cover and seal into the filter tank. See section 4.4 (page 9). Be sure
that the manway cover is free of debris. If the manway cover is not free of sand, the seal will
not seat properly and could cause the filter to leak at the manway cover. Put the filter valves
into the backwash mode, turn the pump on, (see next section) and run for about 3 to 5
minutes. This will level the sand inside the filter. Use the vent valve to remove air from the
filter. Turn pump OFF, put the valves into filter position and the system is ready for operation.
5
. Normal Operation
5.1 Filtration
Note: Hayward Commercial offers a complete line of valves and connection kits for the
Hayward line of Commercial Pool Filters.
Use the Hayward 2” Multi-Port valve (HCV275) for the HCF302T, HCF342T, HCF362T filters.
