Operating instructions

MAINTENANCE
980076 08/26/03
4-8
MAGNETO BELT
To tighten the magneto belt:
1. Loosen the 2 nuts, which hold the magneto
assembly in place.
2. Slide the magneto until the proper belt tension
is achieved. (1/2” deflection in the center of the
belt halfway between the sheaves).
3. While checking the alignment, tighten the
magneto assembly hold-down nuts.
CHECK VALVE (SOLUTION OUTLET)
Inspect the check valve whenever doing service on
the chemical pump or if flow problems occur in the
chemical system:
1. Remove the check valve. Be sure the small o-
ring for the seat comes out with the check valve.
2. Remove the seat, using a 5/16" Allen wrench.
3.
Check the Teflon seat for debris or wear. Clean
or replace Teflon seat if needed.
4. Clean the poppet and spring, inspect for wear or
damage, and replace as needed.
5.
Re-assemble the check valve. Start the seat by
hand, tighten using a 5/16" Allen wrench.
DO NOT over-tighten seat.
NOTE: Improper seating of the check valve
poppet, damaged spring or o-rings will cause
poor operation of the chemical system.
6. Lubricate the o-rings with o-ring lubricant, Part
#05-008035, and reinstall.
CHEMICAL PUMP
The only repairs which the chemical pump may
require is the replacement of the diaphragm or
check valves. To replace the diaphragm, unscrew
the cover from the body. When replacing the
diaphragm, lubricate the outer edges of the
diaphragm with o-ring lubricant, Part #05-008035,
and reassemble. To replace the check valves,
unscrew the check valve caps. Replace the check
valves and reassemble, using new o-rings.
DO NOT attempt to re-use o-rings once the check
valves have been removed. See the “Illustrated
Parts Listing” for a parts breakdown on the chemical
pump.
PACKING NUT ADJUSTMENT FOR
CHEMICAL METERING & CHEMICAL
SELECTOR VALVES
Examine the packing nut on the chemical metering,
and chemical selector valves for proper tension
every 200 hours. When turning the knob, there
should be a small amount of resistance. If not,
slightly tighten the packing nut. DO NOT over-
tighten. Keeping the valve packings properly
adjusted will eliminate possible leakage from the
valve stems and add to overall valve life.
FIGURE 21
CHEMICAL
SELECTOR
VALVE
CHEMICAL
METERING
or
PACKING NUT
PACKING NUT
(use 5/16"
open end wrench to adjust)
Remove knob
by loosening set
screw to access
packing nut.
VALVE
HEAT BYPASS