Hot Tub Filter Repair and Maintenance
page 3
Replacing a Cartridge Filter Unit
RATING: ADVANCED
Replacing a cartridge filter unit is one of the simpler plumbing jobs
you can do, since there is no electricity or gas to hook up and normally
you will be dealing with no more than three pipes, using techniques
described in Chap. 2.
1. Cut Off the Electricity Shut off the pump by switching off the circuit
breaker. This will make sure it won't come back on (from the time
clock, for example) until you're ready. Since PVC plumbing connections should be allowed to dry overnight, this can be a real problem,
even causing the hot tub to drain out completely, so the simplest way to
be sure is to shut off the electrical supply at the breaker.
2. Isolate the Filter Plumbing Most hot tubs will have valves that allow you
to close off the water from the equipment. Close the valves on both
the suction and discharge sides of the
plumbing. Drain the old filter tank by
TOOLS OF THE TRADE: FILTERS opening the drain plugor backwash valve.
• Heavy, flat-blade screwdriver
• Hacksaw
• PVC glue
• PVC primer
• Pipe wrench
• Teflon tape
• Silicone lube
• Needle-nose pliers
• Hammer
• Emery cloth or fine sandpaper
• Vise-Grips |
|
3. Cut the Plumbing The equipment on many hot tubs today is plumbed using unions, making removal of the old filter easy. In this case, you simply unscrew the unions on each pipe and remove the unit. If there are no unions, cut the pipe between the pump and filter in a location that makes connecting the new plumbing easiest. There's no rule of thumb here, just common sense. If the original installation has more bends and turns in the pipe than needed, now is a good time to cut all that out and start
over. Eliminating unnecessary elbows will increase flow and reduce system pressure. Then cut the pipe
between the old filter and the heater, using the same guidelines. Last,
:ut the waste pipe, if there is one plumbed into a drain. |
Hot Tub Filter
Repair and Maintenance Page: 1 | 2 | 3 | 4 | 5 | 6 |
|
