Reliable B1 Quick Guide

Maintenance & Trouble Shooting (refer to Fig. 1)
The following table provides a simplified, trouble-shooting guide which indicates the necessary corrective maintenance for the
more common problems, which may occur.
Symptom
Probable Cause Correction
Air flows rapidly
through the
Accelerator and
into the outlet port
when resetting.
The Push-Rod is in the held down position by
contamination, the Push-Rod is bent or the Push-Rod
guide is too tight.
Clean or replace as needed.
Minor air flow or
leakage through
the Accelerator.
1. Contamination in the poppet area.
2. The Poppet “O”-Ring has blown off the Poppet,
or is cut.
3. The Accelo-Check diaphragm has a hole or
rip allowing air to reach the outlet through
passageway (F).
4. Leakage past the Push-Rod Guide “O”-Ring.
5. The Push Rod or Push-Rod Guides damaged
causing leakage.
1. Clean.
2. Install new “O”-Ring.
3. Replace.
4. Replace.
5. Replace.
No or low air pressure
in the top chamber
(gauge pressure
does not increase,
and no air pressure
in the outlet).
1. Filter assembly is clogged.
2. Restriction area (Passageway G) is clogged or
the filter on the diaphragm nut is clogged.
1. Replace
2. Replace.
Accelerator will not trip
during a system test.
1. The top chamber air pressure is bleeding back to
the system too fast through restriction area.
2. The top chamber air pressure is bleeding back to
the system through the ripped diaphragm.
3. External leak in top chamber.
4. Filter assembly restricted.
1. Clean the top of the Push-Rod and mating
surface in diaphragm nut, or replace.
2. Replace
3. Check the gauge and the drain plug for
tightness-use new PTFE tape on the plug
after each resetting.
4. Replace.
Accelerator floods with
water.
1. Inspect check valve for leakage when system is
filled with water.
2. The Accelo-Check “O”-Ring is missing or cut.
3. Leakage past the Push-Rod Guide “O”-Ring.
4. Push rod or Push-Rod Guide is
damaged allowing leakage.
5. Condensate from the compressor
has not been drained.
1. Wipe off the clapper facing and seat
clean.
2. Replace if necessary.
3. Replace.
4. Replace.
5. Drain water from compressor and air
supply line.
Accelerator operates
prematurely.
1. Water or dirt in the restriction area.
2. Air is not bleeding back through the restriction
area to compensate for minor pressure
fluctuations.
3. Dry pipe valve is operating prematurely - not the
accelerator.
4. On-Off is setting of the compressor’s pressure
switch allowing the system pressure to decay
too far.
1. Clean top of the Push-Rod and mating
surface-perform sensitivity test.
2. Replace Push-Rod and / or diaphragm
nut. In “Test” section of this Technical
Bulletin - perform sensitivity test.
3. Review the correct pressure settings from
the corresponding system’s technical
bulletin.
4. Readjust the differential of pressure
switch to minimum (6-8 psi) when using
an accelerator.
Bulletin 323
May 2019
Page 5 of 7
www.reliablesprinkler.com

Reliable B1 Specifications

General

Brand	Reliable
Model	B1
Category	Control Unit
Language	English