Prochem Apex GTX - Manual (Page 52)

50
Maintenance
Water Box
1. Check inlet strainer for debris and blockage. A
blocked strainer could damage the solution pump if
water flow is restricted.
2. Inspect water box float valve for freedom of
movement and water leaking past valve.
Chemical Pump
The only repairs which the chemical pump may require
is the replacement of the diaphragm, disk or check
valves. To replace the diaphragm and disk, unscrew the
cover from the body. When replacing the diaphragm,
lubricate the outer edges of the diaphragm with o-ring
lubricant 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 break-down on the chemical pump.
Packing Nut Adjustments For Chemical
Valves
Examine the packing nut on all chemical 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 stem and
add to overall valve life.
86341750 APEX GTX